build: Add some required modules for node

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+# Change Log
+
+All notable changes to this project will be documented in this file. See [standard-version](https://github.com/conventional-changelog/standard-version) for commit guidelines.
+
+<a name="11.1.0"></a>
+# [11.1.0](https://github.com/yargs/yargs/compare/v11.0.0...v11.1.0) (2018-03-04)
+
+
+### Bug Fixes
+
+* choose correct config directory when require.main does not exist ([#1056](https://github.com/yargs/yargs/issues/1056)) ([a04678c](https://github.com/yargs/yargs/commit/a04678c))
+
+
+### Features
+
+* allow hidden options to be displayed with --show-hidden ([#1061](https://github.com/yargs/yargs/issues/1061)) ([ea862ae](https://github.com/yargs/yargs/commit/ea862ae))
+* extend *.rc files in addition to json ([#1080](https://github.com/yargs/yargs/issues/1080)) ([11691a6](https://github.com/yargs/yargs/commit/11691a6))
+
+
+
+<a name="11.0.0"></a>
+# [11.0.0](https://github.com/yargs/yargs/compare/v10.1.2...v11.0.0) (2018-01-22)
+
+
+### Bug Fixes
+
+* Set implicit nargs=1 when type=number requiresArg=true ([#1050](https://github.com/yargs/yargs/issues/1050)) ([2b56812](https://github.com/yargs/yargs/commit/2b56812))
+
+
+### Features
+
+* requiresArg is now simply an alias for nargs(1) ([#1054](https://github.com/yargs/yargs/issues/1054)) ([a3ddacc](https://github.com/yargs/yargs/commit/a3ddacc))
+
+
+### BREAKING CHANGES
+
+* requiresArg now has significantly different error output, matching nargs.
+
+
+
+<a name="10.1.2"></a>
+## [10.1.2](https://github.com/yargs/yargs/compare/v10.1.1...v10.1.2) (2018-01-17)
+
+
+### Bug Fixes
+
+* requiresArg should only be enforced if argument exists ([#1043](https://github.com/yargs/yargs/issues/1043)) ([fbf41ae](https://github.com/yargs/yargs/commit/fbf41ae))
+
+
+
+<a name="10.1.1"></a>
+## [10.1.1](https://github.com/yargs/yargs/compare/v10.1.0...v10.1.1) (2018-01-09)
+
+
+### Bug Fixes
+
+* Add `dirname` sanity check on `findUp` ([#1036](https://github.com/yargs/yargs/issues/1036)) ([331d103](https://github.com/yargs/yargs/commit/331d103))
+
+
+
+<a name="10.1.0"></a>
+# [10.1.0](https://github.com/yargs/yargs/compare/v10.0.3...v10.1.0) (2018-01-01)
+
+
+### Bug Fixes
+
+* 'undefined' should be taken to mean no argument was provided ([#1015](https://github.com/yargs/yargs/issues/1015)) ([c679e90](https://github.com/yargs/yargs/commit/c679e90))
+
+
+### Features
+
+* add missing simple chinese locale strings ([#1004](https://github.com/yargs/yargs/issues/1004)) ([3cc24ec](https://github.com/yargs/yargs/commit/3cc24ec))
+* add Norwegian Nynorsk translations ([#1028](https://github.com/yargs/yargs/issues/1028)) ([a5ac213](https://github.com/yargs/yargs/commit/a5ac213))
+* async command handlers ([#1001](https://github.com/yargs/yargs/issues/1001)) ([241124b](https://github.com/yargs/yargs/commit/241124b))
+* middleware ([#881](https://github.com/yargs/yargs/issues/881)) ([77b8dbc](https://github.com/yargs/yargs/commit/77b8dbc))
+
+
+
+<a name="10.0.3"></a>
+## [10.0.3](https://github.com/yargs/yargs/compare/v10.0.2...v10.0.3) (2017-10-21)
+
+
+### Bug Fixes
+
+* parse array rather than string, so that quotes are safe ([#993](https://github.com/yargs/yargs/issues/993)) ([c351685](https://github.com/yargs/yargs/commit/c351685))
+
+
+
+<a name="10.0.2"></a>
+## [10.0.2](https://github.com/yargs/yargs/compare/v10.0.1...v10.0.2) (2017-10-21)
+
+
+### Bug Fixes
+
+* fix tiny spacing issue with usage ([#992](https://github.com/yargs/yargs/issues/992)) ([7871327](https://github.com/yargs/yargs/commit/7871327))
+
+
+
+<a name="10.0.1"></a>
+## [10.0.1](https://github.com/yargs/yargs/compare/v10.0.0...v10.0.1) (2017-10-19)
+
+
+### Bug Fixes
+
+* help strings for nested commands were missing parent commands ([#990](https://github.com/yargs/yargs/issues/990)) ([cd1ca15](https://github.com/yargs/yargs/commit/cd1ca15))
+* use correct completion command in generated completion script ([#988](https://github.com/yargs/yargs/issues/988)) ([3c8ac1d](https://github.com/yargs/yargs/commit/3c8ac1d))
+
+
+
+<a name="10.0.0"></a>
+# [10.0.0](https://github.com/yargs/yargs/compare/v9.1.0...v10.0.0) (2017-10-18)
+
+
+### Bug Fixes
+
+* config and normalize can be disabled with false ([#952](https://github.com/yargs/yargs/issues/952)) ([3bb8771](https://github.com/yargs/yargs/commit/3bb8771))
+* less eager help command execution ([#972](https://github.com/yargs/yargs/issues/972)) ([8c1d7bf](https://github.com/yargs/yargs/commit/8c1d7bf))
+* the positional argument parse was clobbering global flag arguments ([#984](https://github.com/yargs/yargs/issues/984)) ([7e58453](https://github.com/yargs/yargs/commit/7e58453))
+
+
+### Features
+
+* .usage() can now be used to configure a default command ([#975](https://github.com/yargs/yargs/issues/975)) ([7269531](https://github.com/yargs/yargs/commit/7269531))
+* hidden options are now explicitly indicated using "hidden" flag ([#962](https://github.com/yargs/yargs/issues/962)) ([280d0d6](https://github.com/yargs/yargs/commit/280d0d6))
+* introduce .positional() for configuring positional arguments ([#967](https://github.com/yargs/yargs/issues/967)) ([cb16460](https://github.com/yargs/yargs/commit/cb16460))
+* replace $0 with file basename ([#983](https://github.com/yargs/yargs/issues/983)) ([20bb99b](https://github.com/yargs/yargs/commit/20bb99b))
+
+
+### BREAKING CHANGES
+
+* .usage() no longer accepts an options object as the second argument. It can instead be used as an alias for configuring a default command.
+* previously hidden options were simply implied using a falsy description
+* help command now only executes if it's the last positional in argv._
+
+
+
+<a name="9.1.0"></a>
+# [9.1.0](https://github.com/yargs/yargs/compare/v9.0.1...v9.1.0) (2017-09-25)
+
+
+### Bug Fixes
+
+* **command:** Run default cmd even if the only cmd ([#950](https://github.com/yargs/yargs/issues/950)) ([7b22203](https://github.com/yargs/yargs/commit/7b22203))
+
+
+### Features
+
+* multiple usage calls are now collected, not replaced ([#958](https://github.com/yargs/yargs/issues/958)) ([74a38b2](https://github.com/yargs/yargs/commit/74a38b2))
+
+
+
+<a name="9.0.1"></a>
+## [9.0.1](https://github.com/yargs/yargs/compare/v9.0.0...v9.0.1) (2017-09-17)
+
+
+### Bug Fixes
+
+* implications fails only displayed once ([#954](https://github.com/yargs/yargs/issues/954)) ([ac8088b](https://github.com/yargs/yargs/commit/ac8088b))
+
+
+
+<a name="9.0.0"></a>
+# [9.0.0](https://github.com/yargs/yargs/compare/v8.0.2...v9.0.0) (2017-09-03)
+
+
+### Bug Fixes
+
+* 'undefined' default value for choices resulted in validation failing ([782b896](https://github.com/yargs/yargs/commit/782b896))
+* address bug with handling of arrays of implications ([c240661](https://github.com/yargs/yargs/commit/c240661))
+* defaulting keys to 'undefined' interfered with conflicting key logic ([a8e0cff](https://github.com/yargs/yargs/commit/a8e0cff))
+* don't bother calling JSON.stringify() on string default values ([#891](https://github.com/yargs/yargs/issues/891)) ([628be21](https://github.com/yargs/yargs/commit/628be21))
+* exclude positional arguments from completion output ([#927](https://github.com/yargs/yargs/issues/927)) ([71c7ec7](https://github.com/yargs/yargs/commit/71c7ec7))
+* strict mode should not fail for hidden options ([#949](https://github.com/yargs/yargs/issues/949)) ([0e0c58d](https://github.com/yargs/yargs/commit/0e0c58d))
+
+
+### Features
+
+* allow implies and conflicts to accept array values ([#922](https://github.com/yargs/yargs/issues/922)) ([abdc7da](https://github.com/yargs/yargs/commit/abdc7da))
+* allow parse with no arguments as alias for yargs.argv ([#944](https://github.com/yargs/yargs/issues/944)) ([a9f03e7](https://github.com/yargs/yargs/commit/a9f03e7))
+* enable .help() and .version() by default ([#912](https://github.com/yargs/yargs/issues/912)) ([1ef44e0](https://github.com/yargs/yargs/commit/1ef44e0))
+* to allow both undefined and nulls, for benefit of TypeScript  ([#945](https://github.com/yargs/yargs/issues/945)) ([792564d](https://github.com/yargs/yargs/commit/792564d))
+
+
+### BREAKING CHANGES
+
+* version() and help() are now enabled by default, and show up in help output; the implicit help command can no longer be enabled/disabled independently from the help command itself (which can now be disabled).
+* parse() now behaves as an alias for .argv, unless a parseCallback is provided.
+
+
+
+<a name="8.0.2"></a>
+## [8.0.2](https://github.com/yargs/yargs/compare/v8.0.1...v8.0.2) (2017-06-12)
+
+
+
+<a name="8.0.1"></a>
+## [8.0.1](https://github.com/yargs/yargs/compare/v8.0.0...v8.0.1) (2017-05-02)
+
+
+
+<a name="8.0.0"></a>
+# [8.0.0](https://github.com/yargs/yargs/compare/v7.1.0...v8.0.0) (2017-05-01)
+
+
+### Bug Fixes
+
+* commands are now applied in order, from left to right ([#857](https://github.com/yargs/yargs/issues/857)) ([baba863](https://github.com/yargs/yargs/commit/baba863))
+* help now takes precedence over command recommendation ([#866](https://github.com/yargs/yargs/issues/866)) ([17e3567](https://github.com/yargs/yargs/commit/17e3567))
+* positional arguments now work if no handler is provided to inner command ([#864](https://github.com/yargs/yargs/issues/864)) ([e28ded3](https://github.com/yargs/yargs/commit/e28ded3))
+
+
+### Chores
+
+* upgrade yargs-parser ([#867](https://github.com/yargs/yargs/issues/867)) ([8f9c6c6](https://github.com/yargs/yargs/commit/8f9c6c6))
+
+
+### Features
+
+* allow extends to inherit from a module ([#865](https://github.com/yargs/yargs/issues/865)) ([89456d9](https://github.com/yargs/yargs/commit/89456d9))
+* allow strict mode to be disabled ([#840](https://github.com/yargs/yargs/issues/840)) ([6f78c05](https://github.com/yargs/yargs/commit/6f78c05))
+
+
+### BREAKING CHANGES
+
+* extends functionality now always loads the JSON provided, rather than reading from a specific key
+* Node 4+ is now required; this will allow us to start updating our dependencies.
+* the first argument to strict() is now used to enable/disable its functionality, rather than controlling whether or not it is global.
+
+
+
+<a name="7.1.0"></a>
+# [7.1.0](https://github.com/yargs/yargs/compare/v7.0.2...v7.1.0) (2017-04-13)
+
+
+### Bug Fixes
+
+* fix demandOption no longer treats 'false' as truthy ([#829](https://github.com/yargs/yargs/issues/829)) ([c748dd2](https://github.com/yargs/yargs/commit/c748dd2))
+* get terminalWidth in non interactive mode no longer causes a validation exception ([#837](https://github.com/yargs/yargs/issues/837)) ([360e301](https://github.com/yargs/yargs/commit/360e301))
+* we shouldn't output help if we've printed a prior help-like message ([#847](https://github.com/yargs/yargs/issues/847)) ([17e89bd](https://github.com/yargs/yargs/commit/17e89bd))
+
+
+### Features
+
+* add support for numeric commands ([#825](https://github.com/yargs/yargs/issues/825)) ([fde0564](https://github.com/yargs/yargs/commit/fde0564))
+
+
+
+<a name="7.0.2"></a>
+## [7.0.2](https://github.com/yargs/yargs/compare/v7.0.1...v7.0.2) (2017-03-10)
+
+
+### Bug Fixes
+
+* populating placeholder arguments broke validation ([b3eb2fe](https://github.com/yargs/yargs/commit/b3eb2fe))
+
+
+
+<a name="7.0.1"></a>
+## [7.0.1](https://github.com/yargs/yargs/compare/v7.0.0...v7.0.1) (2017-03-03)
+
+
+### Bug Fixes
+
+* --help with default command should print top-level help ([#810](https://github.com/yargs/yargs/issues/810)) ([9c03fa4](https://github.com/yargs/yargs/commit/9c03fa4))
+
+
+
+<a name="7.0.0"></a>
+# [7.0.0](https://github.com/yargs/yargs/compare/v6.6.0...v7.0.0) (2017-02-26)
+
+
+### Bug Fixes
+
+* address min/max validation message regression ([#750](https://github.com/yargs/yargs/issues/750)) ([2e5ce0f](https://github.com/yargs/yargs/commit/2e5ce0f))
+* address positional argument strict() bug introduced in [#766](https://github.com/yargs/yargs/issues/766) ([#784](https://github.com/yargs/yargs/issues/784)) ([a8528e6](https://github.com/yargs/yargs/commit/a8528e6))
+* console.warn() rather than throwing errors when api signatures are incorrect ([#804](https://github.com/yargs/yargs/issues/804)) ([a607061](https://github.com/yargs/yargs/commit/a607061))
+* context should override parsed argv ([#786](https://github.com/yargs/yargs/issues/786)) ([0997288](https://github.com/yargs/yargs/commit/0997288))
+* context variables are now recognized in strict() mode ([#796](https://github.com/yargs/yargs/issues/796)) ([48575cd](https://github.com/yargs/yargs/commit/48575cd))
+* errors were not bubbling appropriately from sub-commands to top-level ([#802](https://github.com/yargs/yargs/issues/802)) ([8a992f5](https://github.com/yargs/yargs/commit/8a992f5))
+* positional arguments of sub-commands threw strict() exception ([#805](https://github.com/yargs/yargs/issues/805)) ([f3f074b](https://github.com/yargs/yargs/commit/f3f074b))
+* pull in yargs-parser with modified env precedence ([#787](https://github.com/yargs/yargs/issues/787)) ([e0fbbe5](https://github.com/yargs/yargs/commit/e0fbbe5))
+* running parse() multiple times on the same yargs instance caused exception if help() enabled ([#790](https://github.com/yargs/yargs/issues/790)) ([07e39b7](https://github.com/yargs/yargs/commit/07e39b7))
+* use path.resolve() to support node 0.10 ([#797](https://github.com/yargs/yargs/issues/797)) ([49a93fc](https://github.com/yargs/yargs/commit/49a93fc))
+
+
+### Features
+
+* add conflicts and implies shorthands. ([#753](https://github.com/yargs/yargs/issues/753)) ([bd1472b](https://github.com/yargs/yargs/commit/bd1472b))
+* add traditional Chinese translation ([#780](https://github.com/yargs/yargs/issues/780)) ([6ab6a95](https://github.com/yargs/yargs/commit/6ab6a95))
+* allow provided config object to extend other configs ([#779](https://github.com/yargs/yargs/issues/779)) ([3280dd0](https://github.com/yargs/yargs/commit/3280dd0))
+* function argument validation ([#773](https://github.com/yargs/yargs/issues/773)) ([22ed9bb](https://github.com/yargs/yargs/commit/22ed9bb))
+* if only one column is provided for examples, allow it to take up the entire line ([#749](https://github.com/yargs/yargs/issues/749)) ([7931652](https://github.com/yargs/yargs/commit/7931652))
+* introduce custom yargs error object ([#765](https://github.com/yargs/yargs/issues/765)) ([8308efa](https://github.com/yargs/yargs/commit/8308efa))
+* introduces support for default commands, using the '*' identifier ([#785](https://github.com/yargs/yargs/issues/785)) ([d78a0f5](https://github.com/yargs/yargs/commit/d78a0f5))
+* rethink how options are inherited by commands ([#766](https://github.com/yargs/yargs/issues/766)) ([ab1fa4b](https://github.com/yargs/yargs/commit/ab1fa4b))
+
+
+### BREAKING CHANGES
+
+* `extends` key in config file is now used for extending other config files
+* environment variables now take precedence over config files.
+* context now takes precedence over argv and defaults
+* the arguments passed to functions are now validated, there's a good chance this will throw exceptions for a few folks who are using the API in an unexpected way.
+* by default options, and many of yargs' parsing helpers will now default to being applied globally; such that they are no-longer reset before being passed into commands.
+* yargs will no longer aggressively suppress errors, allowing errors that are not generated internally to bubble.
+
+
+
+<a name="6.6.0"></a>
+# [6.6.0](https://github.com/yargs/yargs/compare/v6.5.0...v6.6.0) (2016-12-29)
+
+
+### Bug Fixes
+
+* [object Object] was accidentally being populated on options object ([#736](https://github.com/yargs/yargs/issues/736)) ([f755e27](https://github.com/yargs/yargs/commit/f755e27))
+* do not use cwd when resolving package.json for yargs parsing config ([#726](https://github.com/yargs/yargs/issues/726)) ([9bdaab7](https://github.com/yargs/yargs/commit/9bdaab7))
+
+
+### Features
+
+* implement conflicts() for defining mutually exclusive arguments; thanks [@madcampos](https://github.com/madcampos)! ([#741](https://github.com/yargs/yargs/issues/741)) ([5883779](https://github.com/yargs/yargs/commit/5883779))
+* split demand() into demandCommand()/demandOption() ([#740](https://github.com/yargs/yargs/issues/740)) ([66573c8](https://github.com/yargs/yargs/commit/66573c8))
+* support for positional argument aliases ([#727](https://github.com/yargs/yargs/issues/727)) ([27e1a57](https://github.com/yargs/yargs/commit/27e1a57))
+
+
+
+<a name="6.5.0"></a>
+# [6.5.0](https://github.com/yargs/yargs/compare/v6.4.0...v6.5.0) (2016-12-01)
+
+
+### Bug Fixes
+
+* still freeze/unfreeze if parse() is called in isolation ([#717](https://github.com/yargs/yargs/issues/717)) ([30a9492](https://github.com/yargs/yargs/commit/30a9492))
+
+
+### Features
+
+* pull in yargs-parser introducing additional settings ([#688](https://github.com/yargs/yargs/issues/688)), and fixing [#716](https://github.com/yargs/yargs/issues/716) ([#722](https://github.com/yargs/yargs/issues/722)) ([702995a](https://github.com/yargs/yargs/commit/702995a))
+
+
+
+<a name="6.4.0"></a>
+# [6.4.0](https://github.com/yargs/yargs/compare/v6.3.0...v6.4.0) (2016-11-13)
+
+
+### Bug Fixes
+
+* **locales:** correct some Russian translations ([#691](https://github.com/yargs/yargs/issues/691)) ([a980671](https://github.com/yargs/yargs/commit/a980671))
+
+
+### Features
+
+* **locales:** Added Belarusian translation ([#690](https://github.com/yargs/yargs/issues/690)) ([68dac1f](https://github.com/yargs/yargs/commit/68dac1f))
+* **locales:** Create nl.json ([#687](https://github.com/yargs/yargs/issues/687)) ([46ce1bb](https://github.com/yargs/yargs/commit/46ce1bb))
+* update to yargs-parser that addresses [#598](https://github.com/yargs/yargs/issues/598), [#617](https://github.com/yargs/yargs/issues/617) ([#700](https://github.com/yargs/yargs/issues/700)) ([54cb31d](https://github.com/yargs/yargs/commit/54cb31d))
+* yargs is now passed as the third-argument to fail handler ([#613](https://github.com/yargs/yargs/issues/613)) ([21b74f9](https://github.com/yargs/yargs/commit/21b74f9))
+
+
+### Performance Improvements
+
+* normalizing package data is an expensive operation ([#705](https://github.com/yargs/yargs/issues/705)) ([49cf533](https://github.com/yargs/yargs/commit/49cf533))
+
+
+
+<a name="6.3.0"></a>
+# [6.3.0](https://github.com/yargs/yargs/compare/v6.2.0...v6.3.0) (2016-10-19)
+
+
+### Bug Fixes
+
+* **command:** subcommands via commandDir() now supported for parse(msg, cb) ([#678](https://github.com/yargs/yargs/issues/678)) ([6b85cc6](https://github.com/yargs/yargs/commit/6b85cc6))
+
+
+### Features
+
+* **locales:** Add Thai locale file ([#679](https://github.com/yargs/yargs/issues/679)) ([c05e36b](https://github.com/yargs/yargs/commit/c05e36b))
+
+
+
+<a name="6.2.0"></a>
+# [6.2.0](https://github.com/yargs/yargs/compare/v6.1.1...v6.2.0) (2016-10-16)
+
+
+### Bug Fixes
+
+* stop applying parser to context object ([#675](https://github.com/yargs/yargs/issues/675)) ([3fe9b8f](https://github.com/yargs/yargs/commit/3fe9b8f))
+
+
+### Features
+
+* add new pt_BR translations ([#674](https://github.com/yargs/yargs/issues/674)) ([5615a82](https://github.com/yargs/yargs/commit/5615a82))
+* Italian translations for 'did you mean' and 'aliases' ([#673](https://github.com/yargs/yargs/issues/673)) ([81984e6](https://github.com/yargs/yargs/commit/81984e6))
+
+
+
+<a name="6.1.1"></a>
+## [6.1.1](https://github.com/yargs/yargs/compare/v6.1.0...v6.1.1) (2016-10-15)
+
+
+### Bug Fixes
+
+* freeze was not resetting configObjects to initial state; addressed performance issue raised by [@nexdrew](https://github.com/nexdrew). ([#670](https://github.com/yargs/yargs/issues/670)) ([ae4bcd4](https://github.com/yargs/yargs/commit/ae4bcd4))
+
+
+
+<a name="6.1.0"></a>
+# [6.1.0](https://github.com/yargs/yargs/compare/v6.0.0...v6.1.0) (2016-10-15)
+
+
+### Bug Fixes
+
+* **locales:** change some translations ([#667](https://github.com/yargs/yargs/issues/667)) ([aa966c5](https://github.com/yargs/yargs/commit/aa966c5))
+* **locales:** conform hi locale to y18n.__n expectations ([#666](https://github.com/yargs/yargs/issues/666)) ([22adb18](https://github.com/yargs/yargs/commit/22adb18))
+
+
+### Features
+
+* initial support for command aliases ([#647](https://github.com/yargs/yargs/issues/647)) ([127a040](https://github.com/yargs/yargs/commit/127a040))
+* **command:** add camelcase commands to argv ([#658](https://github.com/yargs/yargs/issues/658)) ([b1cabae](https://github.com/yargs/yargs/commit/b1cabae))
+* **locales:** add Hindi translations ([9290912](https://github.com/yargs/yargs/commit/9290912))
+* **locales:** add Hungarian translations  ([be92327](https://github.com/yargs/yargs/commit/be92327))
+* **locales:** Japanese translations for 'did you mean' and 'aliases'  ([#651](https://github.com/yargs/yargs/issues/651)) ([5eb78fc](https://github.com/yargs/yargs/commit/5eb78fc))
+* **locales:** Polish translations for 'did you mean' and 'aliases' ([#650](https://github.com/yargs/yargs/issues/650)) ([c951c0e](https://github.com/yargs/yargs/commit/c951c0e))
+* reworking yargs API to make it easier to run in headless environments, e.g., Slack ([#646](https://github.com/yargs/yargs/issues/646)) ([f284c29](https://github.com/yargs/yargs/commit/f284c29))
+* Turkish translations for 'did you mean' and 'aliases' ([#660](https://github.com/yargs/yargs/issues/660)) ([072fd45](https://github.com/yargs/yargs/commit/072fd45))
+
+
+
+<a name="6.0.0"></a>
+# [6.0.0](https://github.com/yargs/yargs/compare/v5.0.0...v6.0.0) (2016-09-30)
+
+
+### Bug Fixes
+
+* changed parsing of the command string to ignore extra spaces ([#600](https://github.com/yargs/yargs/issues/600)) ([e8e5a72](https://github.com/yargs/yargs/commit/e8e5a72))
+* drop lodash.assign ([#641](https://github.com/yargs/yargs/issues/641)) ([ad3146f](https://github.com/yargs/yargs/commit/ad3146f))
+* for args that have skipValidation set to `true`, check if the parsed arg is `true` ([#619](https://github.com/yargs/yargs/issues/619)) ([658a34c](https://github.com/yargs/yargs/commit/658a34c))
+* upgrade standard, and fix appveyor config so that it works with newest standard ([#607](https://github.com/yargs/yargs/issues/607)) ([c301f42](https://github.com/yargs/yargs/commit/c301f42))
+
+
+### Chores
+
+* upgrade yargs-parser ([#633](https://github.com/yargs/yargs/issues/633)) ([cc1224e](https://github.com/yargs/yargs/commit/cc1224e))
+
+
+### Features
+
+* make opts object optional for .option() ([#624](https://github.com/yargs/yargs/issues/624)) ([4f29de6](https://github.com/yargs/yargs/commit/4f29de6))
+
+
+### Performance Improvements
+
+* defer windowWidth() to improve perf for non-help usage ([#610](https://github.com/yargs/yargs/issues/610)) ([cbc3636](https://github.com/yargs/yargs/commit/cbc3636))
+
+
+### BREAKING CHANGES
+
+* coerce is now applied as a final step after other parsing is complete
+
+
+
+<a name="5.0.0"></a>
+# [5.0.0](https://github.com/yargs/yargs/compare/v4.8.1...v5.0.0) (2016-08-14)
+
+
+### Bug Fixes
+
+* **default:** Remove undocumented alias of default() ([#469](https://github.com/yargs/yargs/issues/469)) ([b8591b2](https://github.com/yargs/yargs/commit/b8591b2))
+* remove deprecated zh.json ([#578](https://github.com/yargs/yargs/issues/578)) ([317c62c](https://github.com/yargs/yargs/commit/317c62c))
+
+
+### Features
+
+* .help() API can now enable implicit help command ([#574](https://github.com/yargs/yargs/issues/574)) ([7645019](https://github.com/yargs/yargs/commit/7645019))
+* **command:** builder function no longer needs to return the yargs instance ([#549](https://github.com/yargs/yargs/issues/549)) ([eaa2873](https://github.com/yargs/yargs/commit/eaa2873))
+* add coerce api ([#586](https://github.com/yargs/yargs/issues/586)) ([1d53ccb](https://github.com/yargs/yargs/commit/1d53ccb))
+* adds recommendCommands() for command suggestions ([#580](https://github.com/yargs/yargs/issues/580)) ([59474dc](https://github.com/yargs/yargs/commit/59474dc))
+* apply .env() globally ([#553](https://github.com/yargs/yargs/issues/553)) ([be65728](https://github.com/yargs/yargs/commit/be65728))
+* apply default builder to command() and apply fail() handlers globally ([#583](https://github.com/yargs/yargs/issues/583)) ([0aaa68b](https://github.com/yargs/yargs/commit/0aaa68b))
+* update yargs-parser to version 3.1.0 ([#581](https://github.com/yargs/yargs/issues/581)) ([882a127](https://github.com/yargs/yargs/commit/882a127))
+
+
+### Performance Improvements
+
+* defer requiring most external libs until needed ([#584](https://github.com/yargs/yargs/issues/584)) ([f9b0ed4](https://github.com/yargs/yargs/commit/f9b0ed4))
+
+
+### BREAKING CHANGES
+
+* fail is now applied globally.
+* we now default to an empty builder function when command is executed with no builder.
+* yargs-parser now better handles negative integer values, at the cost of handling numeric option names, e.g., -1 hello
+* default: removed undocumented `defaults` alias for `default`.
+* introduces a default `help` command which outputs help, as an alternative to a help flag.
+* interpret demand() numbers as relative to executing command ([#582](https://github.com/yargs/yargs/issues/582)) ([927810c](https://github.com/yargs/yargs/commit/927810c))
+
+
+
+<a name="4.8.1"></a>
+## [4.8.1](https://github.com/yargs/yargs/compare/v4.8.0...v4.8.1) (2016-07-16)
+
+
+### Bug Fixes
+
+* **commandDir:** make dir relative to caller instead of require.main.filename ([#548](https://github.com/yargs/yargs/issues/548)) ([3c2e479](https://github.com/yargs/yargs/commit/3c2e479))
+* add config lookup for .implies() ([#556](https://github.com/yargs/yargs/issues/556)) ([8d7585c](https://github.com/yargs/yargs/commit/8d7585c))
+* cache pkg lookups by path to avoid returning the wrong one ([#552](https://github.com/yargs/yargs/issues/552)) ([fea7e0b](https://github.com/yargs/yargs/commit/fea7e0b))
+* positional arguments were not being handled appropriately by parse() ([#559](https://github.com/yargs/yargs/issues/559)) ([063a866](https://github.com/yargs/yargs/commit/063a866))
+* pull in [@nexdrew](https://github.com/nexdrew)'s fixes to yargs-parser ([#560](https://github.com/yargs/yargs/issues/560)) ([c77c080](https://github.com/yargs/yargs/commit/c77c080)), closes [#560](https://github.com/yargs/yargs/issues/560)
+
+
+
+<a name="4.8.0"></a>
+# [4.8.0](https://github.com/yargs/yargs/compare/v4.7.1...v4.8.0) (2016-07-09)
+
+
+### Bug Fixes
+
+* drop unused camelcase dependency fixes [#516](https://github.com/yargs/yargs/issues/516) ([#525](https://github.com/yargs/yargs/issues/525)) ([365fb9a](https://github.com/yargs/yargs/commit/365fb9a)), closes [#516](https://github.com/yargs/yargs/issues/516) [#525](https://github.com/yargs/yargs/issues/525)
+* fake a tty in tests, so that we can use the new set-blocking ([#512](https://github.com/yargs/yargs/issues/512)) ([a54c742](https://github.com/yargs/yargs/commit/a54c742))
+* ignore invalid package.json during read-pkg-up ([#546](https://github.com/yargs/yargs/issues/546)) ([e058c87](https://github.com/yargs/yargs/commit/e058c87))
+* keep both zh and zh_CN until yargs[@5](https://github.com/5).x ([0f8faa7](https://github.com/yargs/yargs/commit/0f8faa7))
+* lazy-load package.json and cache. get rid of pkg-conf dependency. ([#544](https://github.com/yargs/yargs/issues/544)) ([2609b2e](https://github.com/yargs/yargs/commit/2609b2e))
+* we now respect the order of _ when applying commands ([#537](https://github.com/yargs/yargs/issues/537)) ([ed86b78](https://github.com/yargs/yargs/commit/ed86b78))
+
+
+### Features
+
+* add .commandDir(dir) to API to apply all command modules from a relative directory ([#494](https://github.com/yargs/yargs/issues/494)) ([b299dff](https://github.com/yargs/yargs/commit/b299dff))
+* **command:** derive missing command string from module filename ([#527](https://github.com/yargs/yargs/issues/527)) ([20d4b8a](https://github.com/yargs/yargs/commit/20d4b8a))
+* builder is now optional for a command module ([#545](https://github.com/yargs/yargs/issues/545)) ([8d6ad6e](https://github.com/yargs/yargs/commit/8d6ad6e))
+
+
+
+<a name="4.7.1"></a>
+## [4.7.1](https://github.com/yargs/yargs/compare/v4.7.0...v4.7.1) (2016-05-15)
+
+
+### Bug Fixes
+
+* switch to using `const` rather than `var` ([#499](https://github.com/yargs/yargs/pull/499))
+* make stdout flush on newer versions of Node.js ([#501](https://github.com/yargs/yargs/issues/501)) ([9f8c6f4](https://github.com/yargs/yargs/commit/9f8c6f4))
+
+
+
+<a name="4.7.0"></a>
+# [4.7.0](https://github.com/yargs/yargs/compare/v4.6.0...v4.7.0) (2016-05-02)
+
+
+### Bug Fixes
+
+* **pkgConf:** fix aliases issues in .pkgConf() ([#478](https://github.com/yargs/yargs/issues/478))([b900502](https://github.com/yargs/yargs/commit/b900502))
+
+
+### Features
+
+* **completion:** allow to get completions for any string, not just process.argv ([#470](https://github.com/yargs/yargs/issues/470))([74fcfbc](https://github.com/yargs/yargs/commit/74fcfbc))
+* **configuration:** Allow to directly pass a configuration object to .config() ([#480](https://github.com/yargs/yargs/issues/480))([e0a7e05](https://github.com/yargs/yargs/commit/e0a7e05))
+* **validation:** Add .skipValidation() method ([#471](https://github.com/yargs/yargs/issues/471))([d72badb](https://github.com/yargs/yargs/commit/d72badb))
+
+
+
+<a name="4.6.0"></a>
+# [4.6.0](https://github.com/yargs/yargs/compare/v4.5.0...v4.6.0) (2016-04-11)
+
+
+### Bug Fixes
+
+* **my brand!:** I agree with [@osher](https://github.com/osher) lightweight isn't a huge selling point of ours any longer, see [#468](https://github.com/yargs/yargs/issues/468) ([c46d7e1](https://github.com/yargs/yargs/commit/c46d7e1))
+
+### Features
+
+* switch to standard-version for release management ([f70f801](https://github.com/yargs/yargs/commit/f70f801))
+* upgrade to version of yargs-parser that introduces some slick new features, great work [@elas7](https://github.com/elas7). update cliui, replace win-spawn, replace badge. ([#475](https://github.com/yargs/yargs/issues/475)) ([f915dd4](https://github.com/yargs/yargs/commit/f915dd4))
+
+
+
+<a name="4.5.0"></a>
+# [4.5.0](https://github.com/yargs/yargs/compare/v4.4.0...v4.5.0) (2016-04-05)
+
+
+### Bug Fixes
+
+* **windows:** handle $0 better on Windows platforms ([eb6e03f](https://github.com/yargs/yargs/commit/eb6e03f))
+
+### Features
+
+* **commands:** implemented variadic positional arguments ([51d926e](https://github.com/yargs/yargs/commit/51d926e))
+* **completion:** completion now better handles aliases, and avoids duplicating keys. ([86416c8](https://github.com/yargs/yargs/commit/86416c8))
+* **config:** If invoking .config() without parameters, set a default option ([0413dd1](https://github.com/yargs/yargs/commit/0413dd1))
+* **conventional-changelog:** switching to using conventional-changelog for generating the changelog ([a2b5a2a](https://github.com/yargs/yargs/commit/a2b5a2a))
+
+
+
+### v4.4.0 (2016/04/03 21:10 +07:00)
+
+- [#454](https://github.com/yargs/yargs/pull/454) fix demand() when second argument is an array (@elas7)
+- [#452](https://github.com/yargs/yargs/pull/452) fix code example for `.help()` docs (@maxrimue)
+- [#450](https://github.com/yargs/yargs/pull/450) fix for bash completion trailing space edge-case (@elas7)
+- [#448](https://github.com/yargs/yargs/pull/448) allow a method to be passed to `showHelp`, rather than a log-level (@osher)
+- [#446](https://github.com/yargs/yargs/pull/446) update yargs-parser, y18n, nyc, cliui, pkg-conf (@bcoe)
+- [#436](https://github.com/yargs/yargs/pull/436) the rebase method is only used by tests, do not export it in two places (@elas7)
+- [#428](https://github.com/yargs/yargs/pull/428) initial support for subcommands (@nexdrew)
+
+### v4.3.2 (2016/3/20 15:07 +07:00)
+
+- [#445](https://github.com/yargs/yargs/pull/445) strict mode was failing if no commands were registered (@nexdrew)
+- [#443](https://github.com/yargs/yargs/pull/443) adds Italian translation \o/ (@madrisan)
+- [#441](https://github.com/yargs/yargs/pull/441) remove duplicate keys from array options configuration (@elas7)
+- [#437](https://github.com/yargs/yargs/pull/437) standardize tests for .command() (@lrlna)
+
+### v4.3.0 (2016/3/12 14:19 +07:00)
+
+- [#432](https://github.com/yargs/yargs/pull/432) non-singleton version of yargs (@bcoe)
+- [#422, #425, #420] translations for number (@zkat, @rilut, @maxrimue, @watilde)
+- [#414](https://github.com/yargs/yargs/pull/414) all command options can be defined in module now (@nexdrew)
+
+### v4.2.0 (2016/2/22 11:02 +07:00)
+
+- [#395](https://github.com/yargs/yargs/pull/395) do not reset groups if they contain
+  global keys (@novemberborn)
+- [#393](https://github.com/yargs/yargs/pull/393) use sane default for usage strings (@nexdrew)
+- [#392](https://github.com/yargs/yargs/pull/392) resetting wrap() was causing layout issues
+  with commands (@nexdrew)
+- [#391](https://github.com/yargs/yargs/pull/391) commands were being added multiple times (@nexdrew)
+
+### v4.0.0 (2016/2/14 1:27 +07:00)
+
+- [#384](https://github.com/bcoe/yargs/pull/384) add new number type to yargs (@lrlna, @maxrimue)
+- [#382](https://github.com/bcoe/yargs/pull/382) pass error as extra parameter to fail (@gajus)
+- [#378](https://github.com/bcoe/yargs/pull/378) introduces the pkgConf feature, which tells
+  yargs to load default argument values from a key on a project's package.json (@bcoe)
+- [#376](https://github.com/bcoe/yargs/pull/376) **breaking change**, make help() method signature
+   more consistent with other commands (@maxrimue)
+- [#368](https://github.com/bcoe/yargs/pull/368) **breaking change**, overhaul to command handling API:
+  introducing named positional arguments, commands as modules, introduces the concept of global options (options that don't reset). (@nexdrew, @bcoe).
+- [#364](https://github.com/bcoe/yargs/pull/364) add the slick new yargs website to the package.json (@iarna).
+- [#357](https://github.com/bcoe/yargs/pull/357) .strict() now requires that a valid command is provided (@lrlna)
+- [#356](https://github.com/bcoe/yargs/pull/356) pull the parsing bits of yargs into the separate module yargs-parser. Various parsing options can now be turned on and off using configuration (@bcoe).
+- [#330](https://github.com/bcoe/yargs/pull/330) **breaking change**, fix inconsistencies with `.version()` API. (@maxrimue).
+
+### v3.32.0 (2016/1/14 10:13 +07:00)
+
+- [#344](https://github.com/bcoe/yargs/pull/344) yargs now has a code of conduct and contributor guidelines (@bcoe)
+- [#341](https://github.com/bcoe/yargs/issues/341) Fix edge-case with camel-case arguments (@davibe)
+- [#331](https://github.com/bcoe/yargs/pull/331) Handle parsing a raw argument string (@kellyselden)
+- [#325](https://github.com/bcoe/yargs/pull/325) Tweaks to make tests pass again on Windows (@isaacs)
+- [#321](https://github.com/bcoe/yargs/pull/321) Custom config parsing function (@bcoe)
+
+### v3.31.0 (2015/12/03 10:15 +07:00)
+
+- [#239](https://github.com/bcoe/yargs/pull/239) Pass argv to commands (@bcoe)
+- [#308](https://github.com/bcoe/yargs/pull/308) Yargs now handles environment variables (@nexdrew)
+- [#302](https://github.com/bcoe/yargs/pull/302) Add Indonesian translation (@rilut)
+- [#300](https://github.com/bcoe/yargs/pull/300) Add Turkish translation (@feyzo)
+- [#298](https://github.com/bcoe/yargs/pull/298) Add Norwegian Bokmål translation (@sindresorhus)
+- [#297](https://github.com/bcoe/yargs/pull/297) Fix for layout of cjk characters (@disjukr)
+- [#296](https://github.com/bcoe/yargs/pull/296) Add Korean translation (@disjukr)
+
+### v3.30.0 (2015/11/13 16:29 +07:00)
+
+- [#293](https://github.com/bcoe/yargs/pull/293) Polish language support (@kamilogorek)
+- [#291](https://github.com/bcoe/yargs/pull/291) fix edge-cases with `.alias()` (@bcoe)
+- [#289](https://github.com/bcoe/yargs/pull/289) group options in custom groups (@bcoe)
+
+### v3.29.0 (2015/10/16 21:51 +07:00)
+
+- [#282](https://github.com/bcoe/yargs/pull/282) completions now accept promises (@LinusU)
+- [#281](https://github.com/bcoe/yargs/pull/281) fix parsing issues with dot notation (@bcoe)
+
+### v3.28.0 (2015/10/16 1:55 +07:00)
+
+- [#277](https://github.com/bcoe/yargs/pull/277) adds support for ansi escape codes (@bcoe)
+
+### v3.27.0 (2015/10/08 1:55 +00:00)
+
+- [#271](https://github.com/bcoe/yargs/pull/273) skips validation for help or version flags with exitProcess(false) (@tepez)
+- [#273](https://github.com/bcoe/yargs/pull/273) implements single output for errors with exitProcess(false) (@nexdrew)
+- [#269](https://github.com/bcoe/yargs/pull/269) verifies single output for errors with exitProcess(false) (@tepez)
+- [#268](https://github.com/bcoe/yargs/pull/268) adds Chinese translation (@qiu8310)
+- [#266](https://github.com/bcoe/yargs/pull/266) adds case for -- after -- in parser test (@geophree)
+
+### v3.26.0 (2015/09/25 2:14 +00:00)
+
+- [#263](https://github.com/bcoe/yargs/pull/263) document count() and option() object keys (@nexdrew)
+- [#259](https://github.com/bcoe/yargs/pull/259) remove util in readme (@38elements)
+- [#258](https://github.com/bcoe/yargs/pull/258) node v4 builds, update deps (@nexdrew)
+- [#257](https://github.com/bcoe/yargs/pull/257) fix spelling errors (@dkoleary88)
+
+### v3.25.0 (2015/09/13 7:38 -07:00)
+
+- [#254](https://github.com/bcoe/yargs/pull/254) adds Japanese translation (@oti)
+- [#253](https://github.com/bcoe/yargs/pull/253) fixes for tests on Windows (@bcoe)
+
+### v3.24.0 (2015/09/04 12:02 +00:00)
+
+- [#248](https://github.com/bcoe/yargs/pull/248) reinstate os-locale, no spawning (@nexdrew)
+- [#249](https://github.com/bcoe/yargs/pull/249) use travis container-based infrastructure (@nexdrew)
+- [#247](https://github.com/bcoe/yargs/pull/247) upgrade standard (@nexdrew)
+
+### v3.23.0 (2015/08/30 23:00 +00:00)
+
+- [#246](https://github.com/bcoe/yargs/pull/246) detect locale based only on environment variables (@bcoe)
+- [#244](https://github.com/bcoe/yargs/pull/244) adds Windows CI testing (@bcoe)
+- [#245](https://github.com/bcoe/yargs/pull/245) adds OSX CI testing (@bcoe, @nexdrew)
+
+### v3.22.0 (2015/08/28 22:26 +00:00)
+- [#242](https://github.com/bcoe/yargs/pull/242) adds detectLocale config option (@bcoe)
+
+### v3.21.1 (2015/08/28 20:58 +00:00)
+- [#240](https://github.com/bcoe/yargs/pull/240) hot-fix for Atom on Windows (@bcoe)
+
+### v3.21.0 (2015/08/21 21:20 +00:00)
+- [#238](https://github.com/bcoe/yargs/pull/238) upgrade camelcase, window-size, chai, mocha (@nexdrew)
+- [#237](https://github.com/bcoe/yargs/pull/237) adds defaultDescription to option() (@nexdrew)
+
+### v3.20.0 (2015/08/20 01:29 +00:00)
+- [#231](https://github.com/bcoe/yargs/pull/231) Merge pull request #231 from bcoe/detect-locale (@sindresorhus)
+- [#235](https://github.com/bcoe/yargs/pull/235) adds german translation to yargs (@maxrimue)
+
+### v3.19.0 (2015/08/14 05:12 +00:00)
+- [#224](https://github.com/bcoe/yargs/pull/224) added Portuguese translation (@codemonkey3045)
+
+### v3.18.1 (2015/08/12 05:53 +00:00)
+
+- [#228](https://github.com/bcoe/yargs/pull/228) notes about embedding yargs in Electron (@etiktin)
+- [#223](https://github.com/bcoe/yargs/pull/223) make booleans work in config files (@sgentle)
+
+### v3.18.0 (2015/08/06 20:05 +00:00)
+- [#222](https://github.com/bcoe/yargs/pull/222) updates fr locale (@nexdrew)
+- [#221](https://github.com/bcoe/yargs/pull/221) adds missing locale strings (@nexdrew)
+- [#220](https://github.com/bcoe/yargs/pull/220) adds es locale (@zkat)
+
+### v3.17.1 (2015/08/02 19:35 +00:00)
+- [#218](https://github.com/bcoe/yargs/pull/218) upgrades nyc (@bcoe)
+
+### v3.17.0 (2015/08/02 18:39 +00:00)
+- [#217](https://github.com/bcoe/yargs/pull/217) sort methods in README.md (@nexdrew)
+- [#215](https://github.com/bcoe/yargs/pull/215) adds fr locale (@LoicMahieu)
+
+### v3.16.0 (2015/07/30 04:35 +00:00)
+- [#210](https://github.com/bcoe/yargs/pull/210) adds i18n support to yargs (@bcoe)
+- [#209](https://github.com/bcoe/yargs/pull/209) adds choices type to yargs (@nexdrew)
+- [#207](https://github.com/bcoe/yargs/pull/207) pretty new shields from shields.io (@SimenB)
+- [#208](https://github.com/bcoe/yargs/pull/208) improvements to README.md (@nexdrew)
+- [#205](https://github.com/bcoe/yargs/pull/205) faster build times on Travis (@ChristianMurphy)
+
+### v3.15.0 (2015/07/06 06:01 +00:00)
+- [#197](https://github.com/bcoe/yargs/pull/197) tweaks to how errors bubble up from parser.js (@bcoe)
+- [#193](https://github.com/bcoe/yargs/pull/193) upgraded nyc, reporting now happens by default (@bcoe)
+
+### v3.14.0 (2015/06/28 02:12 +00:00)
+
+- [#192](https://github.com/bcoe/yargs/pull/192) standard style nits (@bcoe)
+- [#190](https://github.com/bcoe/yargs/pull/190) allow for hidden commands, e.g.,
+  .completion('completion', false) (@tschaub)
+
+### v3.13.0 (2015/06/24 04:12 +00:00)
+
+- [#187](https://github.com/bcoe/yargs/pull/187) completion now behaves differently
+  if it is being run in the context of a command (@tschaub)
+- [#186](https://github.com/bcoe/yargs/pull/186) if no matches are found for a completion
+  default to filename completion (@tschaub)
+
+### v3.12.0 (2015/06/19 03:23 +00:00)
+- [#183](https://github.com/bcoe/yargs/pull/183) don't complete commands if they've already been completed (@tschaub)
+- [#181](https://github.com/bcoe/yargs/pull/181) various fixes for completion. (@bcoe, @tschaub)
+- [#182](https://github.com/bcoe/yargs/pull/182) you can now set a maximum # of of required arguments (@bcoe)
+
+### v3.11.0 (2015/06/15 05:15 +00:00)
+
+- [#173](https://github.com/bcoe/yargs/pull/173) update standard, window-size, chai (@bcoe)
+- [#171](https://github.com/bcoe/yargs/pull/171) a description can now be set
+  when providing a config option. (@5c077yP)
+
+### v3.10.0 (2015/05/29 04:25 +00:00)
+
+- [#165](https://github.com/bcoe/yargs/pull/165) expose yargs.terminalWidth() thanks @ensonic (@bcoe)
+- [#164](https://github.com/bcoe/yargs/pull/164) better array handling thanks @getify (@bcoe)
+
+### v3.9.1 (2015/05/20 05:14 +00:00)
+- [b6662b6](https://github.com/bcoe/yargs/commit/b6662b6774cfeab4876f41ec5e2f67b7698f4e2f) clarify .config() docs (@linclark)
+- [0291360](https://github.com/bcoe/yargs/commit/02913606285ce31ce81d7f12c48d8a3029776ec7) fixed tests, switched to nyc for coverage, fixed security issue, added Lin as collaborator (@bcoe)
+
+### v3.9.0 (2015/05/10 18:32 +00:00)
+- [#157](https://github.com/bcoe/yargs/pull/157) Merge pull request #157 from bcoe/command-yargs. allows handling of command specific arguments. Thanks for the suggestion @ohjames (@bcoe)
+- [#158](https://github.com/bcoe/yargs/pull/158) Merge pull request #158 from kemitchell/spdx-license. Update license format (@kemitchell)
+
+### v3.8.0 (2015/04/24 23:10 +00:00)
+- [#154](https://github.com/bcoe/yargs/pull/154) showHelp's method signature was misleading fixes #153 (@bcoe)
+- [#151](https://github.com/bcoe/yargs/pull/151) refactor yargs' table layout logic to use new helper library (@bcoe)
+- [#150](https://github.com/bcoe/yargs/pull/150) Fix README example in argument requirements (@annonymouse)
+
+### v3.7.2 (2015/04/13 11:52 -07:00)
+
+* [679fbbf](https://github.com/bcoe/yargs/commit/679fbbf55904030ccee8a2635e8e5f46551ab2f0) updated yargs to use the [standard](https://github.com/feross/standard) style guide (agokjr)
+* [22382ee](https://github.com/bcoe/yargs/commit/22382ee9f5b495bc2586c1758cd1091cec3647f9 various bug fixes for $0 (@nylen)
+
+### v3.7.1 (2015/04/10 11:06 -07:00)
+
+* [89e1992](https://github.com/bcoe/yargs/commit/89e1992a004ba73609b5f9ee6890c4060857aba4) detect iojs bin along with node bin. (@bcoe)
+* [755509e](https://github.com/bcoe/yargs/commit/755509ea90041e5f7833bba3b8c5deffe56f0aab) improvements to example documentation in README.md (@rstacruz)
+* [0d2dfc8](https://github.com/bcoe/yargs/commit/0d2dfc822a43418242908ad97ddd5291a1b35dc6) showHelp() no longer requires that .argv has been called (@bcoe)
+
+### v3.7.0 (2015/04/04 02:29 -07:00)
+
+* [56cbe2d](https://github.com/bcoe/yargs/commit/56cbe2ddd33dc176dcbf97ba40559864a9f114e4) make .requiresArg() work with type hints. (@bcoe).
+* [2f5d562](https://github.com/bcoe/yargs/commit/2f5d5624f736741deeedf6a664d57bc4d857bdd0) serialize arrays and objects in usage strings. (@bcoe).
+* [5126304](https://github.com/bcoe/yargs/commit/5126304dd18351fc28f10530616fdd9361e0af98) be more lenient about alias/primary key ordering in chaining API. (@bcoe)
+
+### v3.6.0 (2015/03/21 01:00 +00:00)
+- [4e24e22](https://github.com/bcoe/yargs/commit/4e24e22e6a195e55ab943ede704a0231ac33b99c) support for .js configuration files. (@pirxpilot)
+
+### v3.5.4 (2015/03/12 05:56 +00:00)
+- [c16cc08](https://github.com/bcoe/yargs/commit/c16cc085501155cf7fd853ccdf8584b05ab92b78) message for non-option arguments is now optional, thanks to (@raine)
+
+### v3.5.3 (2015/03/09 06:14 +00:00)
+- [870b428](https://github.com/bcoe/yargs/commit/870b428cf515d560926ca392555b7ad57dba9e3d) completion script was missing in package.json (@bcoe)
+
+### v3.5.2 (2015/03/09 06:11 +00:00)
+- [58a4b24](https://github.com/bcoe/yargs/commit/58a4b2473ebbb326713d522be53e32d3aabb08d2) parse was being called multiple times, resulting in strange behavior (@bcoe)
+
+### v3.5.1 (2015/03/09 04:55 +00:00)
+- [4e588e0](https://github.com/bcoe/yargs/commit/4e588e055afbeb9336533095f051496e3977f515) accidentally left testing logic in (@bcoe)
+
+### v3.5.0 (2015/03/09 04:49 +00:00)
+- [718bacd](https://github.com/bcoe/yargs/commit/718bacd81b9b44f786af76b2afe491fe06274f19) added support for bash completions see #4 (@bcoe)
+- [a192882](https://github.com/bcoe/yargs/commit/a19288270fc431396c42af01125eeb4443664528) downgrade to mocha 2.1.0 until https://github.com/mochajs/mocha/issues/1585 can be sorted out (@bcoe)
+
+### v3.4.7 (2015/03/09 04:09 +00:00)
+- [9845e5c](https://github.com/bcoe/yargs/commit/9845e5c1a9c684ba0be3f0bfb40e7b62ab49d9c8) the Argv singleton was not being updated when manually parsing arguments, fixes #114 (@bcoe)
+
+### v3.4.6 (2015/03/09 04:01 +00:00)
+- [45b4c80](https://github.com/bcoe/yargs/commit/45b4c80b890d02770b0a94f326695a8a566e8fe9) set placeholders for all keys fixes #115 (@bcoe)
+
+### v3.4.5 (2015/03/01 20:31 +00:00)
+- [a758e0b](https://github.com/bcoe/yargs/commit/a758e0b2556184f067cf3d9c4ef886d39817ebd2) fix for count consuming too many arguments (@bcoe)
+
+### v3.4.4 (2015/02/28 04:52 +00:00)
+- [0476af7](https://github.com/bcoe/yargs/commit/0476af757966acf980d998b45108221d4888cfcb) added nargs feature, allowing you to specify the number of arguments after an option (@bcoe)
+- [092477d](https://github.com/bcoe/yargs/commit/092477d7ab3efbf0ba11cede57f7d8cfc70b024f) updated README with full example of v3.0 API (@bcoe)
+
+### v3.3.3 (2015/02/28 04:23 +00:00)
+- [0c4b769](https://github.com/bcoe/yargs/commit/0c4b769516cd8d93a7c4e5e675628ae0049aa9a8) remove string dependency, which conflicted with other libraries see #106 (@bcoe)
+
+### v3.3.2 (2015/02/28 04:11 +00:00)
+- [2a98906](https://github.com/bcoe/yargs/commit/2a9890675821c0e7a12f146ce008b0562cb8ec9a) add $0 to epilog (@schnittstabil)
+
+### v3.3.1 (2015/02/24 03:28 +00:00)
+- [ad485ce](https://github.com/bcoe/yargs/commit/ad485ce748ebdfce25b88ef9d6e83d97a2f68987) fix for applying defaults to camel-case args (@bcoe)
+
+### v3.3.0 (2015/02/24 00:49 +00:00)
+- [8bfe36d](https://github.com/bcoe/yargs/commit/8bfe36d7fb0f93a799ea3f4c756a7467c320f8c0) fix and document restart() command, as a tool for building nested CLIs (@bcoe)
+
+### v3.2.1 (2015/02/22 05:45 +00:00)
+- [49a6d18](https://github.com/bcoe/yargs/commit/49a6d1822a4ef9b1ea6f90cc366be60912628885) you can now provide a function that generates a default value (@bcoe)
+
+### v3.2.0 (2015/02/22 05:24 +00:00)
+- [7a55886](https://github.com/bcoe/yargs/commit/7a55886c9343cf71a20744ca5cdd56d2ea7412d5) improvements to yargs two-column text layout (@bcoe)
+- [b6ab513](https://github.com/bcoe/yargs/commit/b6ab5136a4c3fa6aa496f6b6360382e403183989) Tweak NPM version badge (@nylen)
+
+### v3.1.0 (2015/02/19 19:37 +00:00)
+- [9bd2379](https://github.com/bcoe/yargs/commit/9bd237921cf1b61fd9f32c0e6d23f572fc225861) version now accepts a function, making it easy to load version #s from a package.json (@bcoe)
+
+### v3.0.4 (2015/02/14 01:40 +00:00)
+- [0b7c19b](https://github.com/bcoe/yargs/commit/0b7c19beaecb747267ca4cc10e5cb2a8550bc4b7) various fixes for dot-notation handling (@bcoe)
+
+### v3.0.3 (2015/02/14 00:59 +00:00)
+- [c3f35e9](https://github.com/bcoe/yargs/commit/c3f35e99bd5a0d278073fcadd95e2d778616cc17) make sure dot-notation is applied to aliases (@bcoe)
+
+### 3.0.2 (2015/02/13 16:50 +00:00)
+- [74c8967](https://github.com/bcoe/yargs/commit/74c8967c340c204a0a7edf8a702b6f46c2705435) document epilog shorthand of epilogue. (@bcoe)
+- [670110f](https://github.com/bcoe/yargs/commit/670110fc01bedc4831b6fec6afac54517d5a71bc) any non-truthy value now causes check to fail see #76 (@bcoe)
+- [0d8f791](https://github.com/bcoe/yargs/commit/0d8f791a33c11ced4cd431ea8d3d3a337d456b56) finished implementing my wish-list of fetures for yargs 3.0. see #88 (@bcoe)
+- [5768447](https://github.com/bcoe/yargs/commit/5768447447c4c8e8304f178846206ce86540f063) fix coverage. (@bcoe)
+- [82e793f](https://github.com/bcoe/yargs/commit/82e793f3f61c41259eaacb67f0796aea2cf2aaa0) detect console width and perform word-wrapping. (@bcoe)
+- [67476b3](https://github.com/bcoe/yargs/commit/67476b37eea07fee55f23f35b9e0c7d76682b86d) refactor two-column table layout so that we can use it for examples and usage (@bcoe)
+- [4724cdf](https://github.com/bcoe/yargs/commit/4724cdfcc8e37ae1ca3dcce9d762f476e9ef4bb4) major refactor of index.js, in prep for 3.x release. (@bcoe)
+
+### v2.3.0 (2015/02/08 20:41 +00:00)
+- [d824620](https://github.com/bcoe/yargs/commit/d824620493df4e63664af1fe320764dd1a9244e6) allow for undefined boolean defaults (@ashi009)
+
+### v2.2.0 (2015/02/08 20:07 +00:00)
+- [d6edd98](https://github.com/bcoe/yargs/commit/d6edd9848826e7389ed1393858c45d03961365fd) in-prep for further refactoring, and a 3.x release I've shuffled some things around and gotten test-coverage to 100%. (@bcoe)
+
+### v2.1.2 (2015/02/08 06:05 +00:00)
+- [d640745](https://github.com/bcoe/yargs/commit/d640745a7b9f8d476e0223879d056d18d9c265c4) switch to path.relative (@bcoe)
+- [3bfd41f](https://github.com/bcoe/yargs/commit/3bfd41ff262a041f29d828b88936a79c63cad594) remove mocha.opts. (@bcoe)
+- [47a2f35](https://github.com/bcoe/yargs/commit/47a2f357091db70903a402d6765501c1d63f15fe) document using .string('_') for string ids. see #56 (@bcoe)
+- [#57](https://github.com/bcoe/yargs/pull/57) Merge pull request #57 from eush77/option-readme (@eush77)
+
+### v2.1.1 (2015/02/06 08:08 +00:00)
+- [01c6c61](https://github.com/bcoe/yargs/commit/01c6c61d67b4ebf88f41f0b32a345ec67f0ac17d) fix for #71, 'newAliases' of undefined (@bcoe)
+
+### v2.1.0 (2015/02/06 07:59 +00:00)
+- [6a1a3fa](https://github.com/bcoe/yargs/commit/6a1a3fa731958e26ccd56885f183dd8985cc828f) try to guess argument types, and apply sensible defaults see #73 (@bcoe)
+
+### v2.0.1 (2015/02/06 07:54 +00:00)
+- [96a06b2](https://github.com/bcoe/yargs/commit/96a06b2650ff1d085a52b7328d8bba614c20cc12) Fix for strange behavior with --sort option, see #51 (@bcoe)
+
+### v2.0.0 (2015/02/06 07:45 +00:00)
+- [0250517](https://github.com/bcoe/yargs/commit/0250517c9643e53f431b824e8ccfa54937414011) - [108fb84](https://github.com/bcoe/yargs/commit/108fb8409a3a63dcaf99d917fe4dfcfaa1de236d) fixed bug with boolean parsing, when bools separated by = see #66 (@bcoe)
+- [a465a59](https://github.com/bcoe/yargs/commit/a465a5915f912715738de890982e4f8395958b10) Add `files` field to the package.json (@shinnn)
+- [31043de](https://github.com/bcoe/yargs/commit/31043de7a38a17c4c97711f1099f5fb164334db3) fix for yargs.argv having the same keys added multiple times see #63 (@bcoe)
+- [2d68c5b](https://github.com/bcoe/yargs/commit/2d68c5b91c976431001c4863ce47c9297850f1ad) Disable process.exit calls using .exitProcess(false) (@cianclarke)
+- [45da9ec](https://github.com/bcoe/yargs/commit/45da9ec4c55a7bd394721bc6a1db0dabad7bc52a) Mention .option in README (@eush77)
+
+### v1.3.2 (2014/10/06 21:56 +00:00)
+- [b8d3472](https://github.com/bcoe/yargs/commit/b8d34725482e5821a3cc809c0df71378f282f526) 1.3.2 (@chevex)
+
+### list (2014/08/30 18:41 +00:00)
+- [fbc777f](https://github.com/bcoe/yargs/commit/fbc777f416eeefd37c84e44d27d7dfc7c1925721) Now that yargs is the successor to optimist, I'm changing the README language to be more universal. Pirate speak isn't very accessible to non-native speakers. (@chevex)
+- [a54d068](https://github.com/bcoe/yargs/commit/a54d0682ae2efc2394d407ab171cc8a8bbd135ea) version output will not print extra newline (@boneskull)
+- [1cef5d6](https://github.com/bcoe/yargs/commit/1cef5d62a9d6d61a3948a49574892e01932cc6ae) Added contributors section to package.json (@chrisn)
+- [cc295c0](https://github.com/bcoe/yargs/commit/cc295c0a80a2de267e0155b60d315fc4b6f7c709) Added 'require' and 'required' as synonyms for 'demand' (@chrisn)
+- [d0bf951](https://github.com/bcoe/yargs/commit/d0bf951d949066b6280101ed606593d079ee15c8) Updating minimist. (@chevex)
+- [c15f8e7](https://github.com/bcoe/yargs/commit/c15f8e7f245b261e542cf205ce4f4313630cbdb4) Fix #31 (bad interaction between camelCase options and strict mode) (@nylen)
+- [d991b9b](https://github.com/bcoe/yargs/commit/d991b9be687a68812dee1e3b185ba64b7778b82d) Added .help() and .version() methods (@chrisn)
+- [e8c8aa4](https://github.com/bcoe/yargs/commit/e8c8aa46268379357cb11e9fc34b8c403037724b) Added .showHelpOnFail() method (@chrisn)
+- [e855af4](https://github.com/bcoe/yargs/commit/e855af4a933ea966b5bbdd3c4c6397a4bac1a053) Allow boolean flag with .demand() (@chrisn)
+- [14dbec2](https://github.com/bcoe/yargs/commit/14dbec24fb7380683198e2b20c4deb8423e64bea) Fixes issue #22. Arguments are no longer printed to the console when using .config. (@chevex)
+- [bef74fc](https://github.com/bcoe/yargs/commit/bef74fcddc1544598a804f80d0a3728459f196bf) Informing users that Yargs is the official optimist successor. (@chevex)
+- [#24](https://github.com/bcoe/yargs/pull/24) Merge pull request #24 from chrisn/strict (@chrisn)
+- [889a2b2](https://github.com/bcoe/yargs/commit/889a2b28eb9768801b05163360a470d0fd6c8b79) Added requiresArg option, for options that require values (@chrisn)
+- [eb16369](https://github.com/bcoe/yargs/commit/eb163692262be1fe80b992fd8803d5923c5a9b18) Added .strict() method, to report error if unknown arguments are given (@chrisn)
+- [0471c3f](https://github.com/bcoe/yargs/commit/0471c3fd999e1ad4e6cded88b8aa02013b66d14f) Changed optimist to yargs in usage-options.js example (@chrisn)
+- [5c88f74](https://github.com/bcoe/yargs/commit/5c88f74e3cf031b17c54b4b6606c83e485ff520e) Change optimist to yargs in examples (@chrisn)
+- [66f12c8](https://github.com/bcoe/yargs/commit/66f12c82ba3c943e4de8ca862980e835da8ecb3a) Fix a couple of bad interactions between aliases and defaults (@nylen)
+- [8fa1d80](https://github.com/bcoe/yargs/commit/8fa1d80f14b03eb1f2898863a61f1d1615bceb50) Document second argument of usage(message, opts) (@Gobie)
+- [56e6528](https://github.com/bcoe/yargs/commit/56e6528cf674ff70d63083fb044ff240f608448e) For "--some-option", also set argv.someOption (@nylen)
+- [ed5f6d3](https://github.com/bcoe/yargs/commit/ed5f6d33f57ad1086b11c91b51100f7c6c7fa8ee) Finished porting unit tests to Mocha. (@chevex)
+
+### v1.0.15 (2014/02/05 23:18 +00:00)
+- [e2b1fc0](https://github.com/bcoe/yargs/commit/e2b1fc0c4a59cf532ae9b01b275e1ef57eeb64d2) 1.0.15 update to badges (@chevex)
+
+### v1.0.14 (2014/02/05 23:17 +00:00)
+- [f33bbb0](https://github.com/bcoe/yargs/commit/f33bbb0f00fe18960f849cc8e15a7428a4cd59b8) Revert "Fixed issue which caused .demand function not to work correctly." (@chevex)
+
+### v1.0.13 (2014/02/05 22:13 +00:00)
+- [6509e5e](https://github.com/bcoe/yargs/commit/6509e5e7dee6ef1a1f60eea104be0faa1a045075) Fixed issue which caused .demand function not to work correctly. (@chevex)
+
+### v1.0.12 (2013/12/13 00:09 +00:00)
+- [05eb267](https://github.com/bcoe/yargs/commit/05eb26741c9ce446b33ff006e5d33221f53eaceb) 1.0.12 (@chevex)
+
+### v1.0.11 (2013/12/13 00:07 +00:00)
+- [c1bde46](https://github.com/bcoe/yargs/commit/c1bde46e37318a68b87d17a50c130c861d6ce4a9) 1.0.11 (@chevex)
+
+### v1.0.10 (2013/12/12 23:57 +00:00)
+- [dfebf81](https://github.com/bcoe/yargs/commit/dfebf8164c25c650701528ee581ca483a99dc21c) Fixed formatting in README (@chevex)
+
+### v1.0.9 (2013/12/12 23:47 +00:00)
+- [0b4e34a](https://github.com/bcoe/yargs/commit/0b4e34af5e6d84a9dbb3bb6d02cd87588031c182) Update README.md (@chevex)
+
+### v1.0.8 (2013/12/06 16:36 +00:00)
+- [#1](https://github.com/bcoe/yargs/pull/1) fix error caused by check() see #1 (@martinheidegger)
+
+### v1.0.7 (2013/11/24 18:01 +00:00)
+- [a247d88](https://github.com/bcoe/yargs/commit/a247d88d6e46644cbb7303c18b1bb678fc132d72) Modified Pirate Joe image. (@chevex)
+
+### v1.0.6 (2013/11/23 19:21 +00:00)
+- [d7f69e1](https://github.com/bcoe/yargs/commit/d7f69e1d34bc929736a8bdccdc724583e21b7eab) Updated Pirate Joe image. (@chevex)
+
+### v1.0.5 (2013/11/23 19:09 +00:00)
+- [ece809c](https://github.com/bcoe/yargs/commit/ece809cf317cc659175e1d66d87f3ca68c2760be) Updated readme notice again. (@chevex)
+
+### v1.0.4 (2013/11/23 19:05 +00:00)
+- [9e81e81](https://github.com/bcoe/yargs/commit/9e81e81654028f83ba86ffc3ac772a0476084e5e) Updated README with a notice about yargs being a fork of optimist and what that implies. (@chevex)
+
+### v1.0.3 (2013/11/23 17:43 +00:00)
+- [65e7a78](https://github.com/bcoe/yargs/commit/65e7a782c86764944d63d084416aba9ee6019c5f) Changed some small wording in README.md. (@chevex)
+- [459e20e](https://github.com/bcoe/yargs/commit/459e20e539b366b85128dd281ccd42221e96c7da) Fix a bug in the options function, when string and boolean options weren't applied to aliases. (@shockone)
+
+### v1.0.2 (2013/11/23 09:46 +00:00)
+- [3d80ebe](https://github.com/bcoe/yargs/commit/3d80ebed866d3799224b6f7d596247186a3898a9) 1.0.2 (@chevex)
+
+### v1.0.1 (2013/11/23 09:39 +00:00)
+- [f80ff36](https://github.com/bcoe/yargs/commit/f80ff3642d580d4b68bf9f5a94277481bd027142) Updated image. (@chevex)
+
+### v1.0.0 (2013/11/23 09:33 +00:00)
+- [54e31d5](https://github.com/bcoe/yargs/commit/54e31d505f820b80af13644e460894b320bf25a3) Rebranded from optimist to yargs in the spirit of the fork :D (@chevex)
+- [4ebb6c5](https://github.com/bcoe/yargs/commit/4ebb6c59f44787db7c24c5b8fe2680f01a23f498) Added documentation for demandCount(). (@chevex)
+- [4561ce6](https://github.com/bcoe/yargs/commit/4561ce66dcffa95f49e8b4449b25b94cd68acb25) Simplified the error messages returned by .check(). (@chevex)
+- [661c678](https://github.com/bcoe/yargs/commit/661c67886f479b16254a830b7e1db3be29e6b7a6) Fixed an issue with demand not accepting a zero value. (@chevex)
+- [731dd3c](https://github.com/bcoe/yargs/commit/731dd3c37624790490bd6df4d5f1da8f4348279e) Add .fail(fn) so death isn't the only option. Should fix issue #39. (@chevex)
+- [fa15417](https://github.com/bcoe/yargs/commit/fa15417ff9e70dace0d726627a5818654824c1d8) Added a few missing 'return self' (@chevex)
+- [e655e4d](https://github.com/bcoe/yargs/commit/e655e4d99d1ae1d3695ef755d51c2de08d669761) Fix showing help in certain JS environments. (@chevex)
+- [a746a31](https://github.com/bcoe/yargs/commit/a746a31cd47c87327028e6ea33762d6187ec5c87) Better string representation of default values. (@chevex)
+- [6134619](https://github.com/bcoe/yargs/commit/6134619a7e90b911d5443230b644c5d447c1a68c) Implies: conditional demands (@chevex)
+- [046b93b](https://github.com/bcoe/yargs/commit/046b93b5d40a27367af4cb29726e4d781d934639) Added support for JSON config files. (@chevex)
+- [a677ec0](https://github.com/bcoe/yargs/commit/a677ec0a0ecccd99c75e571d03323f950688da03) Add .example(cmd, desc) feature. (@chevex)
+- [1bd4375](https://github.com/bcoe/yargs/commit/1bd4375e11327ba1687d4bb6e5e9f3c30c1be2af) Added 'defaults' as alias to 'default' so as to avoid usage of a reserved keyword. (@chevex)
+- [6b753c1](https://github.com/bcoe/yargs/commit/6b753c16ca09e723060e70b773b430323b29c45c) add .normalize(args..) support for normalizing paths (@chevex)
+- [33d7d59](https://github.com/bcoe/yargs/commit/33d7d59341d364f03d3a25f0a55cb99004dbbe4b) Customize error messages with demand(key, msg) (@chevex)
+- [647d37f](https://github.com/bcoe/yargs/commit/647d37f164c20f4bafbf67dd9db6cd6e2cd3b49f) Merge branch 'rewrite-duplicate-test' of github.com:isbadawi/node-optimist (@chevex)
+- [9059d1a](https://github.com/bcoe/yargs/commit/9059d1ad5e8aea686c2a01c89a23efdf929fff2e) Pass aliases object to check functions for greater versatility. (@chevex)
+- [623dc26](https://github.com/bcoe/yargs/commit/623dc26c7331abff2465ef8532e3418996d42fe6) Added ability to count boolean options and rolled minimist library back into project. (@chevex)
+- [49f0dce](https://github.com/bcoe/yargs/commit/49f0dcef35de4db544c3966350d36eb5838703f6) Fixed small typo. (@chevex)
+- [79ec980](https://github.com/bcoe/yargs/commit/79ec9806d9ca6eb0014cfa4b6d1849f4f004baf2) Removed dependency on wordwrap module. (@chevex)
+- [ea14630](https://github.com/bcoe/yargs/commit/ea14630feddd69d1de99dd8c0e08948f4c91f00a) Merge branch 'master' of github.com:chbrown/node-optimist (@chevex)
+- [2b75da2](https://github.com/bcoe/yargs/commit/2b75da2624061e0f4f3107d20303c06ec9054906) Merge branch 'master' of github.com:seanzhou1023/node-optimist (@chevex)
+- [d9bda11](https://github.com/bcoe/yargs/commit/d9bda1116e26f3b40e833ca9ca19263afea53565) Merge branch 'patch-1' of github.com:thefourtheye/node-optimist (@chevex)
+- [d6cc606](https://github.com/bcoe/yargs/commit/d6cc6064a4f1bea38a16a4430b8a1334832fbeff) Renamed README. (@chevex)
+- [9498d3f](https://github.com/bcoe/yargs/commit/9498d3f59acfb5e102826503e681623c3a64b178) Renamed readme and added .gitignore. (@chevex)
+- [bbd1fe3](https://github.com/bcoe/yargs/commit/bbd1fe37fefa366dde0fb3dc44d91fe8b28f57f5) Included examples for ```help``` and ```showHelp``` functions and fixed few formatting issues (@thefourtheye)
+- [37fea04](https://github.com/bcoe/yargs/commit/37fea0470a5796a0294c1dcfff68d8041650e622) .alias({}) behaves differently based on mapping direction when generating descriptions (@chbrown)
+- [855b20d](https://github.com/bcoe/yargs/commit/855b20d0be567ca121d06b30bea64001b74f3d6d) Documented function signatures are useful for dynamically typed languages. (@chbrown)
+
+### 0.6.0 (2013/06/25 08:48 +00:00)
+- [d37bfe0](https://github.com/bcoe/yargs/commit/d37bfe05ae6d295a0ab481efe4881222412791f4) all tests passing using minimist (@substack)
+- [76f1352](https://github.com/bcoe/yargs/commit/76f135270399d01f2bbc621e524a5966e5c422fd) all parse tests now passing (@substack)
+- [a7b6754](https://github.com/bcoe/yargs/commit/a7b6754276c38d1565479a5685c3781aeb947816) using minimist, some tests passing (@substack)
+- [6655688](https://github.com/bcoe/yargs/commit/66556882aa731cbbbe16cc4d42c85740a2e98099) Give credit where its due (@DeadAlready)
+- [602a2a9](https://github.com/bcoe/yargs/commit/602a2a92a459f93704794ad51b115bbb08b535ce) v0.5.3 - Remove wordwrap as dependency (@DeadAlready)
+
+### 0.5.2 (2013/05/31 03:46 +00:00)
+- [4497ca5](https://github.com/bcoe/yargs/commit/4497ca55e332760a37b866ec119ded347ca27a87) fixed the whitespace bug without breaking anything else (@substack)
+- [5a3dd1a](https://github.com/bcoe/yargs/commit/5a3dd1a4e0211a38613c6e02f61328e1031953fa) failing test for whitespace arg (@substack)
+
+### 0.5.1 (2013/05/30 07:17 +00:00)
+- [a20228f](https://github.com/bcoe/yargs/commit/a20228f62a454755dd07f628a7c5759113918327) fix parse() to work with functions before it (@substack)
+- [b13bd4c](https://github.com/bcoe/yargs/commit/b13bd4cac856a9821d42fa173bdb58f089365a7d) failing test for parse() with modifiers (@substack)
+
+### 0.5.0 (2013/05/18 21:59 +00:00)
+- [c474a64](https://github.com/bcoe/yargs/commit/c474a649231527915c222156e3b40806d365a87c) fixes for dash (@substack)
+
+### 0.4.0 (2013/04/13 19:03 +00:00)
+- [dafe3e1](https://github.com/bcoe/yargs/commit/dafe3e18d7c6e7c2d68e06559df0e5cbea3adb14) failing short test (@substack)
+
+### 0.3.7 (2013/04/04 04:07 +00:00)
+- [6c7a0ec](https://github.com/bcoe/yargs/commit/6c7a0ec94ce4199a505f0518b4d6635d4e47cc81) Fix for windows. On windows there is no _ in environment. (@hdf)
+
+### 0.3.6 (2013/04/04 04:04 +00:00)
+- [e72346a](https://github.com/bcoe/yargs/commit/e72346a727b7267af5aa008b418db89970873f05) Add support for newlines in -a="" arguments (@danielbeardsley)
+- [71e1fb5](https://github.com/bcoe/yargs/commit/71e1fb55ea9987110a669ac6ec12338cfff3821c) drop 0.4, add 0.8 to travis (@substack)
+
+### 0.3.5 (2012/10/10 11:09 +00:00)
+- [ee692b3](https://github.com/bcoe/yargs/commit/ee692b37554c70a0bb16389a50a26b66745cbbea) Fix parsing booleans (@vojtajina)
+- [5045122](https://github.com/bcoe/yargs/commit/5045122664c3f5b4805addf1be2148d5856f7ce8) set $0 properly in the tests (@substack)
+
+### 0.3.4 (2012/04/30 06:54 +00:00)
+- [f28c0e6](https://github.com/bcoe/yargs/commit/f28c0e62ca94f6e0bb2e6d82fc3d91a55e69b903) bump for string "true" params (@substack)
+- [8f44aeb](https://github.com/bcoe/yargs/commit/8f44aeb74121ddd689580e2bf74ef86a605e9bf2) Fix failing test for aliased booleans. (@coderarity)
+- [b9f7b61](https://github.com/bcoe/yargs/commit/b9f7b613b1e68e11e6c23fbda9e555a517dcc976) Add failing test for short aliased booleans. (@coderarity)
+
+### 0.3.3 (2012/04/30 06:45 +00:00)
+- [541bac8](https://github.com/bcoe/yargs/commit/541bac8dd787a5f1a5d28f6d8deb1627871705e7) Fixes #37.
+
+### 0.3.2 (2012/04/12 20:28 +00:00)
+- [3a0f014](https://github.com/bcoe/yargs/commit/3a0f014c1451280ac1c9caa1f639d31675586eec) travis badge (@substack)
+- [4fb60bf](https://github.com/bcoe/yargs/commit/4fb60bf17845f4ce3293f8ca49c9a1a7c736cfce) Fix boolean aliases. (@coderarity)
+- [f14dda5](https://github.com/bcoe/yargs/commit/f14dda546efc4fe06ace04d36919bfbb7634f79b) Adjusted package.json to use tap (@jfhbrook)
+- [88e5d32](https://github.com/bcoe/yargs/commit/88e5d32295be6e544c8d355ff84e355af38a1c74) test/usage.js no longer hangs (@jfhbrook)
+- [e1e740c](https://github.com/bcoe/yargs/commit/e1e740c27082f3ce84deca2093d9db2ef735d0e5) two tests for combined boolean/alias opts parsing (@jfhbrook)
+
+### 0.3.1 (2011/12/31 08:44 +00:00)
+- [d09b719](https://github.com/bcoe/yargs/commit/d09b71980ef711b6cf3918cd19beec8257e40e82) If "default" is set to false it was not passed on, fixed. (@wolframkriesing)
+
+### 0.3.0 (2011/12/09 06:03 +00:00)
+- [6e74aa7](https://github.com/bcoe/yargs/commit/6e74aa7b46a65773e20c0cb68d2d336d4a0d553d) bump and documented dot notation (@substack)
+
+### 0.2.7 (2011/10/20 02:25 +00:00)
+- [94adee2](https://github.com/bcoe/yargs/commit/94adee20e17b58d0836f80e8b9cdbe9813800916) argv._ can be told 'Hey! argv._! Don't be messing with my args.', and it WILL obey (@colinta)
+- [c46fdd5](https://github.com/bcoe/yargs/commit/c46fdd56a05410ae4a1e724a4820c82e77ff5469) optimistic critter image (@substack)
+- [5c95c73](https://github.com/bcoe/yargs/commit/5c95c73aedf4c7482bd423e10c545e86d7c8a125) alias options() to option() (@substack)
+- [f7692ea](https://github.com/bcoe/yargs/commit/f7692ea8da342850af819367833abb685fde41d8) [fix] Fix for parsing boolean edge case (@indexzero)
+- [d1f92d1](https://github.com/bcoe/yargs/commit/d1f92d1425bd7f356055e78621b30cdf9741a3c2)
+- [b01bda8](https://github.com/bcoe/yargs/commit/b01bda8d86e455bbf74ce497864cb8ab5b9fb847) [fix test] Update to ensure optimist is aware of default booleans. Associated tests included (@indexzero)
+- [aa753e7](https://github.com/bcoe/yargs/commit/aa753e7c54fb3a12f513769a0ff6d54aa0f63943) [dist test] Update devDependencies in package.json. Update test pathing to be more npm and require.paths future-proof (@indexzero)
+- [7bfce2f](https://github.com/bcoe/yargs/commit/7bfce2f3b3c98e6539e7549d35fbabced7e9341e) s/sys/util/ (@substack)
+- [d420a7a](https://github.com/bcoe/yargs/commit/d420a7a9c890d2cdb11acfaf3ea3f43bc3e39f41) update usage output (@substack)
+- [cf86eed](https://github.com/bcoe/yargs/commit/cf86eede2e5fc7495b6ec15e6d137d9ac814f075) some sage readme protips about parsing rules (@substack)
+- [5da9f7a](https://github.com/bcoe/yargs/commit/5da9f7a5c0e1758ec7c5801fb3e94d3f6e970513) documented all the methods finally (@substack)
+- [8ca6879](https://github.com/bcoe/yargs/commit/8ca6879311224b25933642987300f6a29de5c21b) fenced syntax highlighting (@substack)
+- [b72bacf](https://github.com/bcoe/yargs/commit/b72bacf1d02594778c1935405bc8137eb61761dc) right-alignment of wrapped extra params (@substack)
+- [2b980bf](https://github.com/bcoe/yargs/commit/2b980bf2656b4ee8fc5134dc5f56a48855c35198) now with .wrap() (@substack)
+- [d614f63](https://github.com/bcoe/yargs/commit/d614f639654057d1b7e35e3f5a306e88ec2ad1e4) don't show 'Options:' when there aren't any (@substack)
+- [691eda3](https://github.com/bcoe/yargs/commit/691eda354df97b5a86168317abcbcaabdc08a0fb) failing test for multi-aliasing (@substack)
+- [0826c9f](https://github.com/bcoe/yargs/commit/0826c9f462109feab2bc7a99346d22e72bf774b7) "Options:" > "options:" (@substack)
+- [72f7490](https://github.com/bcoe/yargs/commit/72f749025d01b7f295738ed370a669d885fbada0) [minor] Update formatting for `.showHelp()` (@indexzero)
+- [75aecce](https://github.com/bcoe/yargs/commit/75aeccea74329094072f95800e02c275e7d999aa) options works again, too lazy to write a proper test right now (@substack)
+- [f742e54](https://github.com/bcoe/yargs/commit/f742e5439817c662dc3bd8734ddd6467e6018cfd) line_count_options example, which breaks (@substack)
+- [4ca06b8](https://github.com/bcoe/yargs/commit/4ca06b8b4ea99b5d5714b315a2a8576bee6e5537) line count example (@substack)
+- [eeb8423](https://github.com/bcoe/yargs/commit/eeb8423e0a5ecc9dc3eb1e6df9f3f8c1c88f920b) remove self.argv setting in boolean (@substack)
+- [6903412](https://github.com/bcoe/yargs/commit/69034126804660af9cc20ea7f4457b50338ee3d7) removed camel case for now (@substack)
+- [5a0d88b](https://github.com/bcoe/yargs/commit/5a0d88bf23e9fa79635dd034e2a1aa992acc83cd) remove dead longest checking code (@substack)
+- [d782170](https://github.com/bcoe/yargs/commit/d782170babf7284b1aa34f5350df0dd49c373fa8) .help() too (@substack)
+- [622ec17](https://github.com/bcoe/yargs/commit/622ec17379bb5374fdbb190404c82bc600975791) rm old help generator (@substack)
+- [7c8baac](https://github.com/bcoe/yargs/commit/7c8baac4d66195e9f5158503ea9ebfb61153dab7) nub keys (@substack)
+- [8197785](https://github.com/bcoe/yargs/commit/8197785ad4762465084485b041abd722f69bf344) generate help message based on the previous calls, todo: nub (@substack)
+- [3ffbdc3](https://github.com/bcoe/yargs/commit/3ffbdc33c8f5e83d4ea2ac60575ce119570c7ede) stub out new showHelp, better checks (@substack)
+- [d4e21f5](https://github.com/bcoe/yargs/commit/d4e21f56a4830f7de841900d3c79756fb9886184) let .options() take single options too (@substack)
+- [3c4cf29](https://github.com/bcoe/yargs/commit/3c4cf2901a29bac119cca8e983028d8669230ec6) .options() is now heaps simpler (@substack)
+- [89f0d04](https://github.com/bcoe/yargs/commit/89f0d043cbccd302f10ab30c2069e05d2bf817c9) defaults work again, all tests pass (@substack)
+- [dd87333](https://github.com/bcoe/yargs/commit/dd8733365423006a6e4156372ebb55f98323af58) update test error messages, down to 2 failing tests (@substack)
+- [53f7bc6](https://github.com/bcoe/yargs/commit/53f7bc626b9875f2abdfc5dd7a80bde7f14143a3) fix for bools doubling up, passes the parse test again, others fail (@substack)
+- [2213e2d](https://github.com/bcoe/yargs/commit/2213e2ddc7263226fba717fb041dc3fde9bc2ee4) refactored for an argv getter, failing several tests (@substack)
+- [d1e7379](https://github.com/bcoe/yargs/commit/d1e737970f15c6c006bebdd8917706827ff2f0f2) just rescan for now, alias test passes (@substack)
+- [b2f8c99](https://github.com/bcoe/yargs/commit/b2f8c99cc477a8eb0fdf4cf178e1785b63185cfd) failing alias test (@substack)
+- [d0c0174](https://github.com/bcoe/yargs/commit/d0c0174daa144bfb6dc7290fdc448c393c475e15) .alias() (@substack)
+- [d85f431](https://github.com/bcoe/yargs/commit/d85f431ad7d07b058af3f2a57daa51495576c164) [api] Remove `.describe()` in favor of building upon the existing `.usage()` API (@indexzero)
+- [edbd527](https://github.com/bcoe/yargs/commit/edbd5272a8e213e71acd802782135c7f9699913a) [doc api] Add `.describe()`, `.options()`, and `.showHelp()` methods along with example. (@indexzero)
+- [be4902f](https://github.com/bcoe/yargs/commit/be4902ff0961ae8feb9093f2c0a4066463ded2cf) updates for coffee since it now does argv the node way (@substack)
+- [e24cb23](https://github.com/bcoe/yargs/commit/e24cb23798ee64e53b60815e7fda78b87f42390c) more general coffeescript detection (@substack)
+- [78ac753](https://github.com/bcoe/yargs/commit/78ac753e5d0ec32a96d39d893272afe989e42a4d) Don't trigger the CoffeeScript hack when running under node_g. (@papandreou)
+- [bcfe973](https://github.com/bcoe/yargs/commit/bcfe9731d7f90d4632281b8a52e8d76eb0195ae6) .string() but failing test (@substack)
+- [1987aca](https://github.com/bcoe/yargs/commit/1987aca28c7ba4e8796c07bbc547cb984804c826) test hex strings (@substack)
+- [ef36db3](https://github.com/bcoe/yargs/commit/ef36db32259b0b0d62448dc907c760e5554fb7e7) more keywords (@substack)
+- [cc53c56](https://github.com/bcoe/yargs/commit/cc53c56329960bed6ab077a79798e991711ba01d) Added camelCase function that converts --multi-word-option to camel case (so it becomes argv.multiWordOption). (@papandreou)
+- [60b57da](https://github.com/bcoe/yargs/commit/60b57da36797716e5783a633c6d5c79099016d45) fixed boolean bug by rescanning (@substack)
+- [dff6d07](https://github.com/bcoe/yargs/commit/dff6d078d97f8ac503c7d18dcc7b7a8c364c2883) boolean examples (@substack)
+- [0e380b9](https://github.com/bcoe/yargs/commit/0e380b92c4ef4e3c8dac1da18b5c31d85b1d02c9) boolean() with passing test (@substack)
+- [62644d4](https://github.com/bcoe/yargs/commit/62644d4bffbb8d1bbf0c2baf58a1d14a6359ef07) coffee compatibility with node regex for versions too (@substack)
+- [430fafc](https://github.com/bcoe/yargs/commit/430fafcf1683d23774772826581acff84b456827) argv._ fixed by fixing the coffee detection (@substack)
+- [343b8af](https://github.com/bcoe/yargs/commit/343b8afefd98af274ebe21b5a16b3a949ec5429f) whichNodeArgs test fails too (@substack)
+- [63df2f3](https://github.com/bcoe/yargs/commit/63df2f371f31e63d7f1dec2cbf0022a5f08da9d2) replicated mnot's bug in whichNodeEmpty test (@substack)
+- [35473a4](https://github.com/bcoe/yargs/commit/35473a4d93a45e5e7e512af8bb54ebb532997ae1) test for ./bin usage (@substack)
+- [13df151](https://github.com/bcoe/yargs/commit/13df151e44228eed10e5441c7cd163e086c458a4) don't coerce booleans to numbers (@substack)
+- [85f8007](https://github.com/bcoe/yargs/commit/85f8007e93b8be7124feea64b1f1916d8ba1894a) package bump for automatic number conversion (@substack)
+- [8f17014](https://github.com/bcoe/yargs/commit/8f170141cded4ccc0c6d67a849c5bf996aa29643) updated readme and examples with new auto-numberification goodness (@substack)
+- [73dc901](https://github.com/bcoe/yargs/commit/73dc9011ac968e39b55e19e916084a839391b506) auto number conversion works yay (@substack)
+- [bcec56b](https://github.com/bcoe/yargs/commit/bcec56b3d031e018064cbb691539ccc4f28c14ad) failing test for not-implemented auto numification (@substack)
+- [ebd2844](https://github.com/bcoe/yargs/commit/ebd2844d683feeac583df79af0e5124a7a7db04e) odd that eql doesn't check types careflly (@substack)
+- [fd854b0](https://github.com/bcoe/yargs/commit/fd854b02e512ce854b76386d395672a7969c1bc4) package author + keywords (@substack)
+- [656a1d5](https://github.com/bcoe/yargs/commit/656a1d5a1b7c0e49d72e80cb13f20671d56f76c6) updated readme with .default() stuff (@substack)
+- [cd7f8c5](https://github.com/bcoe/yargs/commit/cd7f8c55f0b82b79b690d14c5f806851236998a1) passing tests for new .default() behavior (@substack)
+- [932725e](https://github.com/bcoe/yargs/commit/932725e39ce65bc91a0385a5fab659a5fa976ac2) new default() thing for setting default key/values (@substack)
+- [4e6c7ab](https://github.com/bcoe/yargs/commit/4e6c7aba6374ac9ebc6259ecf91f13af7bce40e3) test for coffee usage (@substack)
+- [d54ffcc](https://github.com/bcoe/yargs/commit/d54ffccf2a5a905f51ed5108f7c647f35d64ae23) new --key value style with passing tests. NOTE: changes existing behavior (@substack)
+- [ed2a2d5](https://github.com/bcoe/yargs/commit/ed2a2d5d828100ebeef6385c0fb88d146a5cfe9b) package bump for summatix's coffee script fix (@substack)
+- [75a975e](https://github.com/bcoe/yargs/commit/75a975eed8430d28e2a79dc9e6d819ad545f4587) Added support for CoffeeScript (@summatix)
+- [56b2b1d](https://github.com/bcoe/yargs/commit/56b2b1de8d11f8a2b91979d8ae2d6db02d8fe64d) test coverage for the falsy check() usage (@substack)
+- [a4843a9](https://github.com/bcoe/yargs/commit/a4843a9f0e69ffb4afdf6a671d89eb6f218be35d) check bug fixed plus a handy string (@substack)
+- [857bd2d](https://github.com/bcoe/yargs/commit/857bd2db933a5aaa9cfecba0ced2dc9b415f8111) tests for demandCount, back up to 100% coverage (@substack)
+- [073b776](https://github.com/bcoe/yargs/commit/073b7768ebd781668ef05c13f9003aceca2f5c35) call demandCount from demand (@substack)
+- [4bd4b7a](https://github.com/bcoe/yargs/commit/4bd4b7a085c8b6ce1d885a0f486cc9865cee2db1) add demandCount to check for the number of arguments in the _ list (@marshall)
+- [b8689ac](https://github.com/bcoe/yargs/commit/b8689ac68dacf248119d242bba39a41cb0adfa07) Rebase checks. That will be its own module eventually. (@substack)
+- [e688370](https://github.com/bcoe/yargs/commit/e688370b576f0aa733c3f46183df69e1b561668e) a $0 like in perl (@substack)
+- [2e5e196](https://github.com/bcoe/yargs/commit/2e5e1960fc19afb21fb3293752316eaa8bcd3609) usage test hacking around process and console (@substack)
+- [fcc3521](https://github.com/bcoe/yargs/commit/fcc352163fbec6a1dfe8caf47a0df39de24fe016) description pun (@substack)
+- [87a1fe2](https://github.com/bcoe/yargs/commit/87a1fe29037ca2ca5fefda85141aaeb13e8ce761) mit/x11 license (@substack)
+- [8d089d2](https://github.com/bcoe/yargs/commit/8d089d24cd687c0bde3640a96c09b78f884900dd) bool example is more consistent and also shows off short option grouping (@substack)
+- [448d747](https://github.com/bcoe/yargs/commit/448d7473ac68e8e03d8befc9457b0d9e21725be0) start of the readme and examples (@substack)
+- [da74dea](https://github.com/bcoe/yargs/commit/da74dea799a9b59dbf022cbb8001bfdb0d52eec9) more tests for long and short captures (@substack)
+- [ab6387e](https://github.com/bcoe/yargs/commit/ab6387e6769ca4af82ca94c4c67c7319f0d9fcfa) silly bug in the tests with s/not/no/, all tests pass now (@substack)
+- [102496a](https://github.com/bcoe/yargs/commit/102496a319e8e06f6550d828fc2f72992c7d9ecc) hack an instance for process.argv onto Argv so the export can be called to create an instance or used for argv, which is the most common case (@substack)
+- [a01caeb](https://github.com/bcoe/yargs/commit/a01caeb532546d19f68f2b2b87f7036cfe1aaedd) divide example (@substack)
+- [443da55](https://github.com/bcoe/yargs/commit/443da55736acbaf8ff8b04d1b9ce19ab016ddda2) start of the lib with a package.json (@substack)
diff --git a/node_modules/yargs/LICENSE b/node_modules/yargs/LICENSE
new file mode 100644
index 0000000..747ab11
--- /dev/null
+++ b/node_modules/yargs/LICENSE
@@ -0,0 +1,22 @@
+Copyright 2010 James Halliday (mail@substack.net)
+Modified work Copyright 2014 Contributors (ben@npmjs.com)
+
+This project is free software released under the MIT/X11 license:
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/node_modules/yargs/README.md b/node_modules/yargs/README.md
new file mode 100644
index 0000000..a09b322
--- /dev/null
+++ b/node_modules/yargs/README.md
@@ -0,0 +1,119 @@
+<p align="center">
+  <img width="250" src="/yargs-logo.png">
+</p>
+<h1 align="center"> Yargs </h1>
+<p align="center">
+  <b >Yargs be a node.js library fer hearties tryin' ter parse optstrings</b>
+</p>
+<br>
+
+[![Build Status][travis-image]][travis-url]
+[![Coverage Status][coveralls-image]][coveralls-url]
+[![NPM version][npm-image]][npm-url]
+[![Windows Tests][windows-image]][windows-url]
+[![js-standard-style][standard-image]][standard-url]
+[![Conventional Commits][conventional-commits-image]][conventional-commits-url]
+[![Slack][slack-image]][slack-url]
+
+## Description :
+Yargs helps you build interactive command line tools, by parsing arguments and generating an elegant user interface. 
+
+It gives you:
+
+* commands and (grouped) options (`my-program.js serve --port=5000`).
+* a dynamically generated help menu based on your arguments.
+
+> <img width="400" src="/screen.png">
+
+* bash-completion shortcuts for commands and options.
+* and [tons more](/docs/api.md).
+
+## Installation
+
+```bash
+npm i yargs --save
+```
+
+## Usage :
+
+### Simple Example
+
+````javascript
+#!/usr/bin/env node
+const argv = require('yargs').argv
+
+if (argv.ships > 3 && argv.distance < 53.5) {
+  console.log('Plunder more riffiwobbles!')
+} else {
+  console.log('Retreat from the xupptumblers!')
+}
+````
+
+```bash
+$ ./plunder.js --ships=4 --distance=22
+Plunder more riffiwobbles!
+
+$ ./plunder.js --ships 12 --distance 98.7
+Retreat from the xupptumblers!
+```
+
+### Complex Example
+
+```javascript
+#!/usr/bin/env node
+require('yargs') // eslint-disable-line
+  .command('serve [port]', 'start the server', (yargs) => {
+    yargs
+      .positional('port', {
+        describe: 'port to bind on',
+        default: 5000
+      })
+  }, (argv) => {
+    if (argv.verbose) console.info(`start server on :${argv.port}`)
+    serve(argv.port)
+  })
+  .option('verbose', {
+    alias: 'v',
+    default: false
+  })
+  .argv
+```
+
+Run the example above with `--help` to see the help for the application.
+
+## Community :
+
+Having problems? want to contribute? join our [community slack](http://devtoolscommunity.herokuapp.com).
+
+## Documentation :
+
+### Table of Contents
+
+* [Yargs' API](/docs/api.md)
+* [Examples](/docs/examples.md)
+* [Parsing Tricks](/docs/tricks.md)
+  * [Stop the Parser](/docs/tricks.md#stop)
+  * [Negating Boolean Arguments](/docs/tricks.md#negate)
+  * [Numbers](/docs/tricks.md#numbers)
+  * [Arrays](/docs/tricks.md#arrays)
+  * [Objects](/docs/tricks.md#objects)
+* [Advanced Topics](/docs/advanced.md)
+  * [Composing Your App Using Commands](/docs/advanced.md#commands)
+  * [Building Configurable CLI Apps](/docs/advanced.md#configuration)
+  * [Customizing Yargs' Parser](/docs/advanced.md#customizing)
+* [Contributing](/contributing.md)
+
+[travis-url]: https://travis-ci.org/yargs/yargs
+[travis-image]: https://img.shields.io/travis/yargs/yargs/master.svg
+[coveralls-url]: https://coveralls.io/github/yargs/yargs
+[coveralls-image]: https://img.shields.io/coveralls/yargs/yargs.svg
+[npm-url]: https://www.npmjs.com/package/yargs
+[npm-image]: https://img.shields.io/npm/v/yargs.svg
+[windows-url]: https://ci.appveyor.com/project/bcoe/yargs-ljwvf
+[windows-image]: https://img.shields.io/appveyor/ci/bcoe/yargs-ljwvf/master.svg?label=Windows%20Tests
+[standard-image]: https://img.shields.io/badge/code%20style-standard-brightgreen.svg
+[standard-url]: http://standardjs.com/
+[conventional-commits-image]: https://img.shields.io/badge/Conventional%20Commits-1.0.0-yellow.svg
+[conventional-commits-url]: https://conventionalcommits.org/
+[slack-image]: http://devtoolscommunity.herokuapp.com/badge.svg
+[slack-url]: http://devtoolscommunity.herokuapp.com
diff --git a/node_modules/yargs/completion.sh.hbs b/node_modules/yargs/completion.sh.hbs
new file mode 100644
index 0000000..819c8ae
--- /dev/null
+++ b/node_modules/yargs/completion.sh.hbs
@@ -0,0 +1,28 @@
+###-begin-{{app_name}}-completions-###
+#
+# yargs command completion script
+#
+# Installation: {{app_path}} {{completion_command}} >> ~/.bashrc
+#    or {{app_path}} {{completion_command}} >> ~/.bash_profile on OSX.
+#
+_yargs_completions()
+{
+    local cur_word args type_list
+
+    cur_word="${COMP_WORDS[COMP_CWORD]}"
+    args=("${COMP_WORDS[@]}")
+
+    # ask yargs to generate completions.
+    type_list=$({{app_path}} --get-yargs-completions "${args[@]}")
+
+    COMPREPLY=( $(compgen -W "${type_list}" -- ${cur_word}) )
+
+    # if no match was found, fall back to filename completion
+    if [ ${#COMPREPLY[@]} -eq 0 ]; then
+      COMPREPLY=( $(compgen -f -- "${cur_word}" ) )
+    fi
+
+    return 0
+}
+complete -F _yargs_completions {{app_name}}
+###-end-{{app_name}}-completions-###
diff --git a/node_modules/yargs/index.js b/node_modules/yargs/index.js
new file mode 100644
index 0000000..dfed54b
--- /dev/null
+++ b/node_modules/yargs/index.js
@@ -0,0 +1,32 @@
+'use strict'
+// classic singleton yargs API, to use yargs
+// without running as a singleton do:
+// require('yargs/yargs')(process.argv.slice(2))
+const yargs = require('./yargs')
+
+Argv(process.argv.slice(2))
+
+module.exports = Argv
+
+function Argv (processArgs, cwd) {
+  const argv = yargs(processArgs, cwd, require)
+  singletonify(argv)
+  return argv
+}
+
+/*  Hack an instance of Argv with process.argv into Argv
+    so people can do
+    require('yargs')(['--beeble=1','-z','zizzle']).argv
+    to parse a list of args and
+    require('yargs').argv
+    to get a parsed version of process.argv.
+*/
+function singletonify (inst) {
+  Object.keys(inst).forEach((key) => {
+    if (key === 'argv') {
+      Argv.__defineGetter__(key, inst.__lookupGetter__(key))
+    } else {
+      Argv[key] = typeof inst[key] === 'function' ? inst[key].bind(inst) : inst[key]
+    }
+  })
+}
diff --git a/node_modules/yargs/lib/apply-extends.js b/node_modules/yargs/lib/apply-extends.js
new file mode 100644
index 0000000..1436b65
--- /dev/null
+++ b/node_modules/yargs/lib/apply-extends.js
@@ -0,0 +1,53 @@
+
+'use strict'
+const fs = require('fs')
+const path = require('path')
+const YError = require('./yerror')
+
+let previouslyVisitedConfigs = []
+
+function checkForCircularExtends (cfgPath) {
+  if (previouslyVisitedConfigs.indexOf(cfgPath) > -1) {
+    throw new YError(`Circular extended configurations: '${cfgPath}'.`)
+  }
+}
+
+function getPathToDefaultConfig (cwd, pathToExtend) {
+  return path.resolve(cwd, pathToExtend)
+}
+
+function applyExtends (config, cwd) {
+  let defaultConfig = {}
+
+  if (config.hasOwnProperty('extends')) {
+    if (typeof config.extends !== 'string') return defaultConfig
+    const isPath = /\.json|\..*rc$/.test(config.extends)
+    let pathToDefault = null
+    if (!isPath) {
+      try {
+        pathToDefault = require.resolve(config.extends)
+      } catch (err) {
+        // most likely this simply isn't a module.
+      }
+    } else {
+      pathToDefault = getPathToDefaultConfig(cwd, config.extends)
+    }
+    // maybe the module uses key for some other reason,
+    // err on side of caution.
+    if (!pathToDefault && !isPath) return config
+
+    checkForCircularExtends(pathToDefault)
+
+    previouslyVisitedConfigs.push(pathToDefault)
+
+    defaultConfig = isPath ? JSON.parse(fs.readFileSync(pathToDefault, 'utf8')) : require(config.extends)
+    delete config.extends
+    defaultConfig = applyExtends(defaultConfig, path.dirname(pathToDefault))
+  }
+
+  previouslyVisitedConfigs = []
+
+  return Object.assign({}, defaultConfig, config)
+}
+
+module.exports = applyExtends
diff --git a/node_modules/yargs/lib/argsert.js b/node_modules/yargs/lib/argsert.js
new file mode 100644
index 0000000..ed1d598
--- /dev/null
+++ b/node_modules/yargs/lib/argsert.js
@@ -0,0 +1,66 @@
+'use strict'
+const command = require('./command')()
+const YError = require('./yerror')
+
+const positionName = ['first', 'second', 'third', 'fourth', 'fifth', 'sixth']
+
+module.exports = function argsert (expected, callerArguments, length) {
+  // TODO: should this eventually raise an exception.
+  try {
+    // preface the argument description with "cmd", so
+    // that we can run it through yargs' command parser.
+    let position = 0
+    let parsed = {demanded: [], optional: []}
+    if (typeof expected === 'object') {
+      length = callerArguments
+      callerArguments = expected
+    } else {
+      parsed = command.parseCommand(`cmd ${expected}`)
+    }
+    const args = [].slice.call(callerArguments)
+
+    while (args.length && args[args.length - 1] === undefined) args.pop()
+    length = length || args.length
+
+    if (length < parsed.demanded.length) {
+      throw new YError(`Not enough arguments provided. Expected ${parsed.demanded.length} but received ${args.length}.`)
+    }
+
+    const totalCommands = parsed.demanded.length + parsed.optional.length
+    if (length > totalCommands) {
+      throw new YError(`Too many arguments provided. Expected max ${totalCommands} but received ${length}.`)
+    }
+
+    parsed.demanded.forEach((demanded) => {
+      const arg = args.shift()
+      const observedType = guessType(arg)
+      const matchingTypes = demanded.cmd.filter(type => type === observedType || type === '*')
+      if (matchingTypes.length === 0) argumentTypeError(observedType, demanded.cmd, position, false)
+      position += 1
+    })
+
+    parsed.optional.forEach((optional) => {
+      if (args.length === 0) return
+      const arg = args.shift()
+      const observedType = guessType(arg)
+      const matchingTypes = optional.cmd.filter(type => type === observedType || type === '*')
+      if (matchingTypes.length === 0) argumentTypeError(observedType, optional.cmd, position, true)
+      position += 1
+    })
+  } catch (err) {
+    console.warn(err.stack)
+  }
+}
+
+function guessType (arg) {
+  if (Array.isArray(arg)) {
+    return 'array'
+  } else if (arg === null) {
+    return 'null'
+  }
+  return typeof arg
+}
+
+function argumentTypeError (observedType, allowedTypes, position, optional) {
+  throw new YError(`Invalid ${positionName[position] || 'manyith'} argument. Expected ${allowedTypes.join(' or ')} but received ${observedType}.`)
+}
diff --git a/node_modules/yargs/lib/command.js b/node_modules/yargs/lib/command.js
new file mode 100644
index 0000000..65322db
--- /dev/null
+++ b/node_modules/yargs/lib/command.js
@@ -0,0 +1,426 @@
+'use strict'
+
+const inspect = require('util').inspect
+const path = require('path')
+const Parser = require('yargs-parser')
+
+const DEFAULT_MARKER = /(^\*)|(^\$0)/
+
+// handles parsing positional arguments,
+// and populating argv with said positional
+// arguments.
+module.exports = function command (yargs, usage, validation) {
+  const self = {}
+  let handlers = {}
+  let aliasMap = {}
+  let defaultCommand
+  self.addHandler = function addHandler (cmd, description, builder, handler, middlewares) {
+    let aliases = []
+    handler = handler || (() => {})
+    middlewares = middlewares || []
+    if (Array.isArray(cmd)) {
+      aliases = cmd.slice(1)
+      cmd = cmd[0]
+    } else if (typeof cmd === 'object') {
+      let command = (Array.isArray(cmd.command) || typeof cmd.command === 'string') ? cmd.command : moduleName(cmd)
+      if (cmd.aliases) command = [].concat(command).concat(cmd.aliases)
+      self.addHandler(command, extractDesc(cmd), cmd.builder, cmd.handler, cmd.middlewares)
+      return
+    }
+
+    // allow a module to be provided instead of separate builder and handler
+    if (typeof builder === 'object' && builder.builder && typeof builder.handler === 'function') {
+      self.addHandler([cmd].concat(aliases), description, builder.builder, builder.handler, builder.middlewares)
+      return
+    }
+
+    // parse positionals out of cmd string
+    const parsedCommand = self.parseCommand(cmd)
+
+    // remove positional args from aliases only
+    aliases = aliases.map(alias => self.parseCommand(alias).cmd)
+
+    // check for default and filter out '*''
+    let isDefault = false
+    const parsedAliases = [parsedCommand.cmd].concat(aliases).filter((c) => {
+      if (DEFAULT_MARKER.test(c)) {
+        isDefault = true
+        return false
+      }
+      return true
+    })
+
+    // standardize on $0 for default command.
+    if (parsedAliases.length === 0 && isDefault) parsedAliases.push('$0')
+
+    // shift cmd and aliases after filtering out '*'
+    if (isDefault) {
+      parsedCommand.cmd = parsedAliases[0]
+      aliases = parsedAliases.slice(1)
+      cmd = cmd.replace(DEFAULT_MARKER, parsedCommand.cmd)
+    }
+
+    // populate aliasMap
+    aliases.forEach((alias) => {
+      aliasMap[alias] = parsedCommand.cmd
+    })
+
+    if (description !== false) {
+      usage.command(cmd, description, isDefault, aliases)
+    }
+
+    handlers[parsedCommand.cmd] = {
+      original: cmd,
+      description: description,
+      handler,
+      builder: builder || {},
+      middlewares: middlewares || [],
+      demanded: parsedCommand.demanded,
+      optional: parsedCommand.optional
+    }
+
+    if (isDefault) defaultCommand = handlers[parsedCommand.cmd]
+  }
+
+  self.addDirectory = function addDirectory (dir, context, req, callerFile, opts) {
+    opts = opts || {}
+    // disable recursion to support nested directories of subcommands
+    if (typeof opts.recurse !== 'boolean') opts.recurse = false
+    // exclude 'json', 'coffee' from require-directory defaults
+    if (!Array.isArray(opts.extensions)) opts.extensions = ['js']
+    // allow consumer to define their own visitor function
+    const parentVisit = typeof opts.visit === 'function' ? opts.visit : o => o
+    // call addHandler via visitor function
+    opts.visit = function visit (obj, joined, filename) {
+      const visited = parentVisit(obj, joined, filename)
+      // allow consumer to skip modules with their own visitor
+      if (visited) {
+        // check for cyclic reference
+        // each command file path should only be seen once per execution
+        if (~context.files.indexOf(joined)) return visited
+        // keep track of visited files in context.files
+        context.files.push(joined)
+        self.addHandler(visited)
+      }
+      return visited
+    }
+    require('require-directory')({ require: req, filename: callerFile }, dir, opts)
+  }
+
+  // lookup module object from require()d command and derive name
+  // if module was not require()d and no name given, throw error
+  function moduleName (obj) {
+    const mod = require('which-module')(obj)
+    if (!mod) throw new Error(`No command name given for module: ${inspect(obj)}`)
+    return commandFromFilename(mod.filename)
+  }
+
+  // derive command name from filename
+  function commandFromFilename (filename) {
+    return path.basename(filename, path.extname(filename))
+  }
+
+  function extractDesc (obj) {
+    for (let keys = ['describe', 'description', 'desc'], i = 0, l = keys.length, test; i < l; i++) {
+      test = obj[keys[i]]
+      if (typeof test === 'string' || typeof test === 'boolean') return test
+    }
+    return false
+  }
+
+  self.parseCommand = function parseCommand (cmd) {
+    const extraSpacesStrippedCommand = cmd.replace(/\s{2,}/g, ' ')
+    const splitCommand = extraSpacesStrippedCommand.split(/\s+(?![^[]*]|[^<]*>)/)
+    const bregex = /\.*[\][<>]/g
+    const parsedCommand = {
+      cmd: (splitCommand.shift()).replace(bregex, ''),
+      demanded: [],
+      optional: []
+    }
+    splitCommand.forEach((cmd, i) => {
+      let variadic = false
+      cmd = cmd.replace(/\s/g, '')
+      if (/\.+[\]>]/.test(cmd) && i === splitCommand.length - 1) variadic = true
+      if (/^\[/.test(cmd)) {
+        parsedCommand.optional.push({
+          cmd: cmd.replace(bregex, '').split('|'),
+          variadic
+        })
+      } else {
+        parsedCommand.demanded.push({
+          cmd: cmd.replace(bregex, '').split('|'),
+          variadic
+        })
+      }
+    })
+    return parsedCommand
+  }
+
+  self.getCommands = () => Object.keys(handlers).concat(Object.keys(aliasMap))
+
+  self.getCommandHandlers = () => handlers
+
+  self.hasDefaultCommand = () => !!defaultCommand
+
+  self.runCommand = function runCommand (command, yargs, parsed, commandIndex) {
+    let aliases = parsed.aliases
+    const commandHandler = handlers[command] || handlers[aliasMap[command]] || defaultCommand
+    const currentContext = yargs.getContext()
+    let numFiles = currentContext.files.length
+    const parentCommands = currentContext.commands.slice()
+
+    // what does yargs look like after the buidler is run?
+    let innerArgv = parsed.argv
+    let innerYargs = null
+    let positionalMap = {}
+    if (command) {
+      currentContext.commands.push(command)
+      currentContext.fullCommands.push(commandHandler.original)
+    }
+    if (typeof commandHandler.builder === 'function') {
+      // a function can be provided, which builds
+      // up a yargs chain and possibly returns it.
+      innerYargs = commandHandler.builder(yargs.reset(parsed.aliases))
+      // if the builder function did not yet parse argv with reset yargs
+      // and did not explicitly set a usage() string, then apply the
+      // original command string as usage() for consistent behavior with
+      // options object below.
+      if (yargs.parsed === false) {
+        if (shouldUpdateUsage(yargs)) {
+          yargs.getUsageInstance().usage(
+            usageFromParentCommandsCommandHandler(parentCommands, commandHandler),
+            commandHandler.description
+          )
+        }
+        innerArgv = innerYargs ? innerYargs._parseArgs(null, null, true, commandIndex) : yargs._parseArgs(null, null, true, commandIndex)
+      } else {
+        innerArgv = yargs.parsed.argv
+      }
+
+      if (innerYargs && yargs.parsed === false) aliases = innerYargs.parsed.aliases
+      else aliases = yargs.parsed.aliases
+    } else if (typeof commandHandler.builder === 'object') {
+      // as a short hand, an object can instead be provided, specifying
+      // the options that a command takes.
+      innerYargs = yargs.reset(parsed.aliases)
+      if (shouldUpdateUsage(innerYargs)) {
+        innerYargs.getUsageInstance().usage(
+          usageFromParentCommandsCommandHandler(parentCommands, commandHandler),
+          commandHandler.description
+        )
+      }
+      Object.keys(commandHandler.builder).forEach((key) => {
+        innerYargs.option(key, commandHandler.builder[key])
+      })
+      innerArgv = innerYargs._parseArgs(null, null, true, commandIndex)
+      aliases = innerYargs.parsed.aliases
+    }
+
+    if (!yargs._hasOutput()) {
+      positionalMap = populatePositionals(commandHandler, innerArgv, currentContext, yargs)
+    }
+
+    // we apply validation post-hoc, so that custom
+    // checks get passed populated positional arguments.
+    if (!yargs._hasOutput()) yargs._runValidation(innerArgv, aliases, positionalMap, yargs.parsed.error)
+
+    if (commandHandler.handler && !yargs._hasOutput()) {
+      yargs._setHasOutput()
+      if (commandHandler.middlewares.length > 0) {
+        const middlewareArgs = commandHandler.middlewares.reduce(function (initialObj, middleware) {
+          return Object.assign(initialObj, middleware(innerArgv))
+        }, {})
+        Object.assign(innerArgv, middlewareArgs)
+      }
+      const handlerResult = commandHandler.handler(innerArgv)
+      if (handlerResult && typeof handlerResult.then === 'function') {
+        handlerResult.then(
+          null,
+          (error) => yargs.getUsageInstance().fail(null, error)
+        )
+      }
+    }
+
+    if (command) {
+      currentContext.commands.pop()
+      currentContext.fullCommands.pop()
+    }
+    numFiles = currentContext.files.length - numFiles
+    if (numFiles > 0) currentContext.files.splice(numFiles * -1, numFiles)
+
+    return innerArgv
+  }
+
+  function shouldUpdateUsage (yargs) {
+    return !yargs.getUsageInstance().getUsageDisabled() &&
+      yargs.getUsageInstance().getUsage().length === 0
+  }
+
+  function usageFromParentCommandsCommandHandler (parentCommands, commandHandler) {
+    const c = DEFAULT_MARKER.test(commandHandler.original) ? commandHandler.original.replace(DEFAULT_MARKER, '').trim() : commandHandler.original
+    const pc = parentCommands.filter((c) => { return !DEFAULT_MARKER.test(c) })
+    pc.push(c)
+    return `$0 ${pc.join(' ')}`
+  }
+
+  self.runDefaultBuilderOn = function (yargs) {
+    if (shouldUpdateUsage(yargs)) {
+      // build the root-level command string from the default string.
+      const commandString = DEFAULT_MARKER.test(defaultCommand.original)
+        ? defaultCommand.original : defaultCommand.original.replace(/^[^[\]<>]*/, '$0 ')
+      yargs.getUsageInstance().usage(
+        commandString,
+        defaultCommand.description
+      )
+    }
+    const builder = defaultCommand.builder
+    if (typeof builder === 'function') {
+      builder(yargs)
+    } else {
+      Object.keys(builder).forEach((key) => {
+        yargs.option(key, builder[key])
+      })
+    }
+  }
+
+  // transcribe all positional arguments "command <foo> <bar> [apple]"
+  // onto argv.
+  function populatePositionals (commandHandler, argv, context, yargs) {
+    argv._ = argv._.slice(context.commands.length) // nuke the current commands
+    const demanded = commandHandler.demanded.slice(0)
+    const optional = commandHandler.optional.slice(0)
+    const positionalMap = {}
+
+    validation.positionalCount(demanded.length, argv._.length)
+
+    while (demanded.length) {
+      const demand = demanded.shift()
+      populatePositional(demand, argv, positionalMap)
+    }
+
+    while (optional.length) {
+      const maybe = optional.shift()
+      populatePositional(maybe, argv, positionalMap)
+    }
+
+    argv._ = context.commands.concat(argv._)
+
+    postProcessPositionals(argv, positionalMap, self.cmdToParseOptions(commandHandler.original))
+
+    return positionalMap
+  }
+
+  function populatePositional (positional, argv, positionalMap, parseOptions) {
+    const cmd = positional.cmd[0]
+    if (positional.variadic) {
+      positionalMap[cmd] = argv._.splice(0).map(String)
+    } else {
+      if (argv._.length) positionalMap[cmd] = [String(argv._.shift())]
+    }
+  }
+
+  // we run yargs-parser against the positional arguments
+  // applying the same parsing logic used for flags.
+  function postProcessPositionals (argv, positionalMap, parseOptions) {
+    // combine the parsing hints we've inferred from the command
+    // string with explicitly configured parsing hints.
+    const options = Object.assign({}, yargs.getOptions())
+    options.default = Object.assign(parseOptions.default, options.default)
+    options.alias = Object.assign(parseOptions.alias, options.alias)
+    options.array = options.array.concat(parseOptions.array)
+
+    const unparsed = []
+    Object.keys(positionalMap).forEach((key) => {
+      positionalMap[key].map((value) => {
+        unparsed.push(`--${key}`)
+        unparsed.push(value)
+      })
+    })
+
+    // short-circuit parse.
+    if (!unparsed.length) return
+
+    const parsed = Parser.detailed(unparsed, options)
+
+    if (parsed.error) {
+      yargs.getUsageInstance().fail(parsed.error.message, parsed.error)
+    } else {
+      // only copy over positional keys (don't overwrite
+      // flag arguments that were already parsed).
+      const positionalKeys = Object.keys(positionalMap)
+      Object.keys(positionalMap).forEach((key) => {
+        [].push.apply(positionalKeys, parsed.aliases[key])
+      })
+
+      Object.keys(parsed.argv).forEach((key) => {
+        if (positionalKeys.indexOf(key) !== -1) {
+          argv[key] = parsed.argv[key]
+        }
+      })
+    }
+  }
+
+  self.cmdToParseOptions = function (cmdString) {
+    const parseOptions = {
+      array: [],
+      default: {},
+      alias: {},
+      demand: {}
+    }
+
+    const parsed = self.parseCommand(cmdString)
+    parsed.demanded.forEach((d) => {
+      const cmds = d.cmd.slice(0)
+      const cmd = cmds.shift()
+      if (d.variadic) {
+        parseOptions.array.push(cmd)
+        parseOptions.default[cmd] = []
+      }
+      cmds.forEach((c) => {
+        parseOptions.alias[cmd] = c
+      })
+      parseOptions.demand[cmd] = true
+    })
+
+    parsed.optional.forEach((o) => {
+      const cmds = o.cmd.slice(0)
+      const cmd = cmds.shift()
+      if (o.variadic) {
+        parseOptions.array.push(cmd)
+        parseOptions.default[cmd] = []
+      }
+      cmds.forEach((c) => {
+        parseOptions.alias[cmd] = c
+      })
+    })
+
+    return parseOptions
+  }
+
+  self.reset = () => {
+    handlers = {}
+    aliasMap = {}
+    defaultCommand = undefined
+    return self
+  }
+
+  // used by yargs.parse() to freeze
+  // the state of commands such that
+  // we can apply .parse() multiple times
+  // with the same yargs instance.
+  let frozen
+  self.freeze = () => {
+    frozen = {}
+    frozen.handlers = handlers
+    frozen.aliasMap = aliasMap
+    frozen.defaultCommand = defaultCommand
+  }
+  self.unfreeze = () => {
+    handlers = frozen.handlers
+    aliasMap = frozen.aliasMap
+    defaultCommand = frozen.defaultCommand
+    frozen = undefined
+  }
+
+  return self
+}
diff --git a/node_modules/yargs/lib/completion.js b/node_modules/yargs/lib/completion.js
new file mode 100644
index 0000000..ad6969a
--- /dev/null
+++ b/node_modules/yargs/lib/completion.js
@@ -0,0 +1,105 @@
+'use strict'
+const fs = require('fs')
+const path = require('path')
+
+// add bash completions to your
+//  yargs-powered applications.
+module.exports = function completion (yargs, usage, command) {
+  const self = {
+    completionKey: 'get-yargs-completions'
+  }
+
+  // get a list of completion commands.
+  // 'args' is the array of strings from the line to be completed
+  self.getCompletion = function getCompletion (args, done) {
+    const completions = []
+    const current = args.length ? args[args.length - 1] : ''
+    const argv = yargs.parse(args, true)
+    const aliases = yargs.parsed.aliases
+
+    // a custom completion function can be provided
+    // to completion().
+    if (completionFunction) {
+      if (completionFunction.length < 3) {
+        const result = completionFunction(current, argv)
+
+        // promise based completion function.
+        if (typeof result.then === 'function') {
+          return result.then((list) => {
+            process.nextTick(() => { done(list) })
+          }).catch((err) => {
+            process.nextTick(() => { throw err })
+          })
+        }
+
+        // synchronous completion function.
+        return done(result)
+      } else {
+        // asynchronous completion function
+        return completionFunction(current, argv, (completions) => {
+          done(completions)
+        })
+      }
+    }
+
+    const handlers = command.getCommandHandlers()
+    for (let i = 0, ii = args.length; i < ii; ++i) {
+      if (handlers[args[i]] && handlers[args[i]].builder) {
+        const builder = handlers[args[i]].builder
+        if (typeof builder === 'function') {
+          const y = yargs.reset()
+          builder(y)
+          return y.argv
+        }
+      }
+    }
+
+    if (!current.match(/^-/)) {
+      usage.getCommands().forEach((usageCommand) => {
+        const commandName = command.parseCommand(usageCommand[0]).cmd
+        if (args.indexOf(commandName) === -1) {
+          completions.push(commandName)
+        }
+      })
+    }
+
+    if (current.match(/^-/)) {
+      Object.keys(yargs.getOptions().key).forEach((key) => {
+        // If the key and its aliases aren't in 'args', add the key to 'completions'
+        const keyAndAliases = [key].concat(aliases[key] || [])
+        const notInArgs = keyAndAliases.every(val => args.indexOf(`--${val}`) === -1)
+        if (notInArgs) {
+          completions.push(`--${key}`)
+        }
+      })
+    }
+
+    done(completions)
+  }
+
+  // generate the completion script to add to your .bashrc.
+  self.generateCompletionScript = function generateCompletionScript ($0, cmd) {
+    let script = fs.readFileSync(
+      path.resolve(__dirname, '../completion.sh.hbs'),
+      'utf-8'
+    )
+    const name = path.basename($0)
+
+    // add ./to applications not yet installed as bin.
+    if ($0.match(/\.js$/)) $0 = `./${$0}`
+
+    script = script.replace(/{{app_name}}/g, name)
+    script = script.replace(/{{completion_command}}/g, cmd)
+    return script.replace(/{{app_path}}/g, $0)
+  }
+
+  // register a function to perform your own custom
+  // completions., this function can be either
+  // synchrnous or asynchronous.
+  let completionFunction = null
+  self.registerFunction = (fn) => {
+    completionFunction = fn
+  }
+
+  return self
+}
diff --git a/node_modules/yargs/lib/levenshtein.js b/node_modules/yargs/lib/levenshtein.js
new file mode 100644
index 0000000..f32b0c2
--- /dev/null
+++ b/node_modules/yargs/lib/levenshtein.js
@@ -0,0 +1,47 @@
+/*
+Copyright (c) 2011 Andrei Mackenzie
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+// levenshtein distance algorithm, pulled from Andrei Mackenzie's MIT licensed.
+// gist, which can be found here: https://gist.github.com/andrei-m/982927
+'use strict'
+// Compute the edit distance between the two given strings
+module.exports = function levenshtein (a, b) {
+  if (a.length === 0) return b.length
+  if (b.length === 0) return a.length
+
+  const matrix = []
+
+  // increment along the first column of each row
+  let i
+  for (i = 0; i <= b.length; i++) {
+    matrix[i] = [i]
+  }
+
+  // increment each column in the first row
+  let j
+  for (j = 0; j <= a.length; j++) {
+    matrix[0][j] = j
+  }
+
+  // Fill in the rest of the matrix
+  for (i = 1; i <= b.length; i++) {
+    for (j = 1; j <= a.length; j++) {
+      if (b.charAt(i - 1) === a.charAt(j - 1)) {
+        matrix[i][j] = matrix[i - 1][j - 1]
+      } else {
+        matrix[i][j] = Math.min(matrix[i - 1][j - 1] + 1, // substitution
+                                Math.min(matrix[i][j - 1] + 1, // insertion
+                                         matrix[i - 1][j] + 1)) // deletion
+      }
+    }
+  }
+
+  return matrix[b.length][a.length]
+}
diff --git a/node_modules/yargs/lib/obj-filter.js b/node_modules/yargs/lib/obj-filter.js
new file mode 100644
index 0000000..c344ac5
--- /dev/null
+++ b/node_modules/yargs/lib/obj-filter.js
@@ -0,0 +1,11 @@
+'use strict'
+module.exports = function objFilter (original, filter) {
+  const obj = {}
+  filter = filter || ((k, v) => true)
+  Object.keys(original || {}).forEach((key) => {
+    if (filter(key, original[key])) {
+      obj[key] = original[key]
+    }
+  })
+  return obj
+}
diff --git a/node_modules/yargs/lib/usage.js b/node_modules/yargs/lib/usage.js
new file mode 100644
index 0000000..c323c1b
--- /dev/null
+++ b/node_modules/yargs/lib/usage.js
@@ -0,0 +1,531 @@
+'use strict'
+// this file handles outputting usage instructions,
+// failures, etc. keeps logging in one place.
+const stringWidth = require('string-width')
+const objFilter = require('./obj-filter')
+const path = require('path')
+const setBlocking = require('set-blocking')
+const YError = require('./yerror')
+
+module.exports = function usage (yargs, y18n) {
+  const __ = y18n.__
+  const self = {}
+
+  // methods for ouputting/building failure message.
+  const fails = []
+  self.failFn = function failFn (f) {
+    fails.push(f)
+  }
+
+  let failMessage = null
+  let showHelpOnFail = true
+  self.showHelpOnFail = function showHelpOnFailFn (enabled, message) {
+    if (typeof enabled === 'string') {
+      message = enabled
+      enabled = true
+    } else if (typeof enabled === 'undefined') {
+      enabled = true
+    }
+    failMessage = message
+    showHelpOnFail = enabled
+    return self
+  }
+
+  let failureOutput = false
+  self.fail = function fail (msg, err) {
+    const logger = yargs._getLoggerInstance()
+
+    if (fails.length) {
+      for (let i = fails.length - 1; i >= 0; --i) {
+        fails[i](msg, err, self)
+      }
+    } else {
+      if (yargs.getExitProcess()) setBlocking(true)
+
+      // don't output failure message more than once
+      if (!failureOutput) {
+        failureOutput = true
+        if (showHelpOnFail) yargs.showHelp('error')
+        if (msg || err) logger.error(msg || err)
+        if (failMessage) {
+          if (msg || err) logger.error('')
+          logger.error(failMessage)
+        }
+      }
+
+      err = err || new YError(msg)
+      if (yargs.getExitProcess()) {
+        return yargs.exit(1)
+      } else if (yargs._hasParseCallback()) {
+        return yargs.exit(1, err)
+      } else {
+        throw err
+      }
+    }
+  }
+
+  // methods for ouputting/building help (usage) message.
+  let usages = []
+  let usageDisabled = false
+  self.usage = (msg, description) => {
+    if (msg === null) {
+      usageDisabled = true
+      usages = []
+      return
+    }
+    usageDisabled = false
+    usages.push([msg, description || ''])
+    return self
+  }
+  self.getUsage = () => {
+    return usages
+  }
+  self.getUsageDisabled = () => {
+    return usageDisabled
+  }
+
+  self.getPositionalGroupName = () => {
+    return __('Positionals:')
+  }
+
+  let examples = []
+  self.example = (cmd, description) => {
+    examples.push([cmd, description || ''])
+  }
+
+  let commands = []
+  self.command = function command (cmd, description, isDefault, aliases) {
+    // the last default wins, so cancel out any previously set default
+    if (isDefault) {
+      commands = commands.map((cmdArray) => {
+        cmdArray[2] = false
+        return cmdArray
+      })
+    }
+    commands.push([cmd, description || '', isDefault, aliases])
+  }
+  self.getCommands = () => commands
+
+  let descriptions = {}
+  self.describe = function describe (key, desc) {
+    if (typeof key === 'object') {
+      Object.keys(key).forEach((k) => {
+        self.describe(k, key[k])
+      })
+    } else {
+      descriptions[key] = desc
+    }
+  }
+  self.getDescriptions = () => descriptions
+
+  let epilog
+  self.epilog = (msg) => {
+    epilog = msg
+  }
+
+  let wrapSet = false
+  let wrap
+  self.wrap = (cols) => {
+    wrapSet = true
+    wrap = cols
+  }
+
+  function getWrap () {
+    if (!wrapSet) {
+      wrap = windowWidth()
+      wrapSet = true
+    }
+
+    return wrap
+  }
+
+  const deferY18nLookupPrefix = '__yargsString__:'
+  self.deferY18nLookup = str => deferY18nLookupPrefix + str
+
+  const defaultGroup = 'Options:'
+  self.help = function help () {
+    normalizeAliases()
+
+    // handle old demanded API
+    const base$0 = path.basename(yargs.$0)
+    const demandedOptions = yargs.getDemandedOptions()
+    const demandedCommands = yargs.getDemandedCommands()
+    const groups = yargs.getGroups()
+    const options = yargs.getOptions()
+
+    let keys = []
+    keys = keys.concat(Object.keys(descriptions))
+    keys = keys.concat(Object.keys(demandedOptions))
+    keys = keys.concat(Object.keys(demandedCommands))
+    keys = keys.concat(Object.keys(options.default))
+    keys = keys.filter(key => {
+      if (options.hiddenOptions.indexOf(key) < 0) {
+        return true
+      } else if (yargs.parsed.argv[options.showHiddenOpt]) {
+        return true
+      }
+    })
+    keys = Object.keys(keys.reduce((acc, key) => {
+      if (key !== '_') acc[key] = true
+      return acc
+    }, {}))
+
+    const theWrap = getWrap()
+    const ui = require('cliui')({
+      width: theWrap,
+      wrap: !!theWrap
+    })
+
+    // the usage string.
+    if (!usageDisabled) {
+      if (usages.length) {
+        // user-defined usage.
+        usages.forEach((usage) => {
+          ui.div(`${usage[0].replace(/\$0/g, base$0)}`)
+          if (usage[1]) {
+            ui.div({text: `${usage[1]}`, padding: [1, 0, 0, 0]})
+          }
+        })
+        ui.div()
+      } else if (commands.length) {
+        let u = null
+        // demonstrate how commands are used.
+        if (demandedCommands._) {
+          u = `${base$0} <${__('command')}>\n`
+        } else {
+          u = `${base$0} [${__('command')}]\n`
+        }
+        ui.div(`${u}`)
+      }
+    }
+
+    // your application's commands, i.e., non-option
+    // arguments populated in '_'.
+    if (commands.length) {
+      ui.div(__('Commands:'))
+
+      const context = yargs.getContext()
+      const parentCommands = context.commands.length ? `${context.commands.join(' ')} ` : ''
+
+      commands.forEach((command) => {
+        const commandString = `${base$0} ${parentCommands}${command[0].replace(/^\$0 ?/, '')}` // drop $0 from default commands.
+        ui.span(
+          {
+            text: commandString,
+            padding: [0, 2, 0, 2],
+            width: maxWidth(commands, theWrap, `${base$0}${parentCommands}`) + 4
+          },
+          {text: command[1]}
+        )
+        const hints = []
+        if (command[2]) hints.push(`[${__('default:').slice(0, -1)}]`) // TODO hacking around i18n here
+        if (command[3] && command[3].length) {
+          hints.push(`[${__('aliases:')} ${command[3].join(', ')}]`)
+        }
+        if (hints.length) {
+          ui.div({text: hints.join(' '), padding: [0, 0, 0, 2], align: 'right'})
+        } else {
+          ui.div()
+        }
+      })
+
+      ui.div()
+    }
+
+    // perform some cleanup on the keys array, making it
+    // only include top-level keys not their aliases.
+    const aliasKeys = (Object.keys(options.alias) || [])
+      .concat(Object.keys(yargs.parsed.newAliases) || [])
+
+    keys = keys.filter(key => !yargs.parsed.newAliases[key] && aliasKeys.every(alias => (options.alias[alias] || []).indexOf(key) === -1))
+
+    // populate 'Options:' group with any keys that have not
+    // explicitly had a group set.
+    if (!groups[defaultGroup]) groups[defaultGroup] = []
+    addUngroupedKeys(keys, options.alias, groups)
+
+    // display 'Options:' table along with any custom tables:
+    Object.keys(groups).forEach((groupName) => {
+      if (!groups[groupName].length) return
+
+      ui.div(__(groupName))
+
+      // if we've grouped the key 'f', but 'f' aliases 'foobar',
+      // normalizedKeys should contain only 'foobar'.
+      const normalizedKeys = groups[groupName].map((key) => {
+        if (~aliasKeys.indexOf(key)) return key
+        for (let i = 0, aliasKey; (aliasKey = aliasKeys[i]) !== undefined; i++) {
+          if (~(options.alias[aliasKey] || []).indexOf(key)) return aliasKey
+        }
+        return key
+      })
+
+      // actually generate the switches string --foo, -f, --bar.
+      const switches = normalizedKeys.reduce((acc, key) => {
+        acc[key] = [ key ].concat(options.alias[key] || [])
+          .map(sw => {
+            // for the special positional group don't
+            // add '--' or '-' prefix.
+            if (groupName === self.getPositionalGroupName()) return sw
+            else return (sw.length > 1 ? '--' : '-') + sw
+          })
+          .join(', ')
+
+        return acc
+      }, {})
+
+      normalizedKeys.forEach((key) => {
+        const kswitch = switches[key]
+        let desc = descriptions[key] || ''
+        let type = null
+
+        if (~desc.lastIndexOf(deferY18nLookupPrefix)) desc = __(desc.substring(deferY18nLookupPrefix.length))
+
+        if (~options.boolean.indexOf(key)) type = `[${__('boolean')}]`
+        if (~options.count.indexOf(key)) type = `[${__('count')}]`
+        if (~options.string.indexOf(key)) type = `[${__('string')}]`
+        if (~options.normalize.indexOf(key)) type = `[${__('string')}]`
+        if (~options.array.indexOf(key)) type = `[${__('array')}]`
+        if (~options.number.indexOf(key)) type = `[${__('number')}]`
+
+        const extra = [
+          type,
+          (key in demandedOptions) ? `[${__('required')}]` : null,
+          options.choices && options.choices[key] ? `[${__('choices:')} ${
+            self.stringifiedValues(options.choices[key])}]` : null,
+          defaultString(options.default[key], options.defaultDescription[key])
+        ].filter(Boolean).join(' ')
+
+        ui.span(
+          {text: kswitch, padding: [0, 2, 0, 2], width: maxWidth(switches, theWrap) + 4},
+          desc
+        )
+
+        if (extra) ui.div({text: extra, padding: [0, 0, 0, 2], align: 'right'})
+        else ui.div()
+      })
+
+      ui.div()
+    })
+
+    // describe some common use-cases for your application.
+    if (examples.length) {
+      ui.div(__('Examples:'))
+
+      examples.forEach((example) => {
+        example[0] = example[0].replace(/\$0/g, base$0)
+      })
+
+      examples.forEach((example) => {
+        if (example[1] === '') {
+          ui.div(
+            {
+              text: example[0],
+              padding: [0, 2, 0, 2]
+            }
+          )
+        } else {
+          ui.div(
+            {
+              text: example[0],
+              padding: [0, 2, 0, 2],
+              width: maxWidth(examples, theWrap) + 4
+            }, {
+              text: example[1]
+            }
+          )
+        }
+      })
+
+      ui.div()
+    }
+
+    // the usage string.
+    if (epilog) {
+      const e = epilog.replace(/\$0/g, base$0)
+      ui.div(`${e}\n`)
+    }
+
+    return ui.toString()
+  }
+
+  // return the maximum width of a string
+  // in the left-hand column of a table.
+  function maxWidth (table, theWrap, modifier) {
+    let width = 0
+
+    // table might be of the form [leftColumn],
+    // or {key: leftColumn}
+    if (!Array.isArray(table)) {
+      table = Object.keys(table).map(key => [table[key]])
+    }
+
+    table.forEach((v) => {
+      width = Math.max(
+        stringWidth(modifier ? `${modifier} ${v[0]}` : v[0]),
+        width
+      )
+    })
+
+    // if we've enabled 'wrap' we should limit
+    // the max-width of the left-column.
+    if (theWrap) width = Math.min(width, parseInt(theWrap * 0.5, 10))
+
+    return width
+  }
+
+  // make sure any options set for aliases,
+  // are copied to the keys being aliased.
+  function normalizeAliases () {
+    // handle old demanded API
+    const demandedOptions = yargs.getDemandedOptions()
+    const options = yargs.getOptions()
+
+    ;(Object.keys(options.alias) || []).forEach((key) => {
+      options.alias[key].forEach((alias) => {
+        // copy descriptions.
+        if (descriptions[alias]) self.describe(key, descriptions[alias])
+        // copy demanded.
+        if (alias in demandedOptions) yargs.demandOption(key, demandedOptions[alias])
+        // type messages.
+        if (~options.boolean.indexOf(alias)) yargs.boolean(key)
+        if (~options.count.indexOf(alias)) yargs.count(key)
+        if (~options.string.indexOf(alias)) yargs.string(key)
+        if (~options.normalize.indexOf(alias)) yargs.normalize(key)
+        if (~options.array.indexOf(alias)) yargs.array(key)
+        if (~options.number.indexOf(alias)) yargs.number(key)
+      })
+    })
+  }
+
+  // given a set of keys, place any keys that are
+  // ungrouped under the 'Options:' grouping.
+  function addUngroupedKeys (keys, aliases, groups) {
+    let groupedKeys = []
+    let toCheck = null
+    Object.keys(groups).forEach((group) => {
+      groupedKeys = groupedKeys.concat(groups[group])
+    })
+
+    keys.forEach((key) => {
+      toCheck = [key].concat(aliases[key])
+      if (!toCheck.some(k => groupedKeys.indexOf(k) !== -1)) {
+        groups[defaultGroup].push(key)
+      }
+    })
+    return groupedKeys
+  }
+
+  self.showHelp = (level) => {
+    const logger = yargs._getLoggerInstance()
+    if (!level) level = 'error'
+    const emit = typeof level === 'function' ? level : logger[level]
+    emit(self.help())
+  }
+
+  self.functionDescription = (fn) => {
+    const description = fn.name ? require('decamelize')(fn.name, '-') : __('generated-value')
+    return ['(', description, ')'].join('')
+  }
+
+  self.stringifiedValues = function stringifiedValues (values, separator) {
+    let string = ''
+    const sep = separator || ', '
+    const array = [].concat(values)
+
+    if (!values || !array.length) return string
+
+    array.forEach((value) => {
+      if (string.length) string += sep
+      string += JSON.stringify(value)
+    })
+
+    return string
+  }
+
+  // format the default-value-string displayed in
+  // the right-hand column.
+  function defaultString (value, defaultDescription) {
+    let string = `[${__('default:')} `
+
+    if (value === undefined && !defaultDescription) return null
+
+    if (defaultDescription) {
+      string += defaultDescription
+    } else {
+      switch (typeof value) {
+        case 'string':
+          string += `"${value}"`
+          break
+        case 'object':
+          string += JSON.stringify(value)
+          break
+        default:
+          string += value
+      }
+    }
+
+    return `${string}]`
+  }
+
+  // guess the width of the console window, max-width 80.
+  function windowWidth () {
+    const maxWidth = 80
+    if (typeof process === 'object' && process.stdout && process.stdout.columns) {
+      return Math.min(maxWidth, process.stdout.columns)
+    } else {
+      return maxWidth
+    }
+  }
+
+  // logic for displaying application version.
+  let version = null
+  self.version = (ver) => {
+    version = ver
+  }
+
+  self.showVersion = () => {
+    const logger = yargs._getLoggerInstance()
+    logger.log(version)
+  }
+
+  self.reset = function reset (localLookup) {
+    // do not reset wrap here
+    // do not reset fails here
+    failMessage = null
+    failureOutput = false
+    usages = []
+    usageDisabled = false
+    epilog = undefined
+    examples = []
+    commands = []
+    descriptions = objFilter(descriptions, (k, v) => !localLookup[k])
+    return self
+  }
+
+  let frozen
+  self.freeze = function freeze () {
+    frozen = {}
+    frozen.failMessage = failMessage
+    frozen.failureOutput = failureOutput
+    frozen.usages = usages
+    frozen.usageDisabled = usageDisabled
+    frozen.epilog = epilog
+    frozen.examples = examples
+    frozen.commands = commands
+    frozen.descriptions = descriptions
+  }
+  self.unfreeze = function unfreeze () {
+    failMessage = frozen.failMessage
+    failureOutput = frozen.failureOutput
+    usages = frozen.usages
+    usageDisabled = frozen.usageDisabled
+    epilog = frozen.epilog
+    examples = frozen.examples
+    commands = frozen.commands
+    descriptions = frozen.descriptions
+    frozen = undefined
+  }
+
+  return self
+}
diff --git a/node_modules/yargs/lib/validation.js b/node_modules/yargs/lib/validation.js
new file mode 100644
index 0000000..f4655b4
--- /dev/null
+++ b/node_modules/yargs/lib/validation.js
@@ -0,0 +1,341 @@
+'use strict'
+const argsert = require('./argsert')
+const objFilter = require('./obj-filter')
+const specialKeys = ['$0', '--', '_']
+
+// validation-type-stuff, missing params,
+// bad implications, custom checks.
+module.exports = function validation (yargs, usage, y18n) {
+  const __ = y18n.__
+  const __n = y18n.__n
+  const self = {}
+
+  // validate appropriate # of non-option
+  // arguments were provided, i.e., '_'.
+  self.nonOptionCount = function nonOptionCount (argv) {
+    const demandedCommands = yargs.getDemandedCommands()
+    // don't count currently executing commands
+    const _s = argv._.length - yargs.getContext().commands.length
+
+    if (demandedCommands._ && (_s < demandedCommands._.min || _s > demandedCommands._.max)) {
+      if (_s < demandedCommands._.min) {
+        if (demandedCommands._.minMsg !== undefined) {
+          usage.fail(
+            // replace $0 with observed, $1 with expected.
+            demandedCommands._.minMsg ? demandedCommands._.minMsg.replace(/\$0/g, _s).replace(/\$1/, demandedCommands._.min) : null
+          )
+        } else {
+          usage.fail(
+            __('Not enough non-option arguments: got %s, need at least %s', _s, demandedCommands._.min)
+          )
+        }
+      } else if (_s > demandedCommands._.max) {
+        if (demandedCommands._.maxMsg !== undefined) {
+          usage.fail(
+            // replace $0 with observed, $1 with expected.
+            demandedCommands._.maxMsg ? demandedCommands._.maxMsg.replace(/\$0/g, _s).replace(/\$1/, demandedCommands._.max) : null
+          )
+        } else {
+          usage.fail(
+          __('Too many non-option arguments: got %s, maximum of %s', _s, demandedCommands._.max)
+          )
+        }
+      }
+    }
+  }
+
+  // validate the appropriate # of <required>
+  // positional arguments were provided:
+  self.positionalCount = function positionalCount (required, observed) {
+    if (observed < required) {
+      usage.fail(
+        __('Not enough non-option arguments: got %s, need at least %s', observed, required)
+      )
+    }
+  }
+
+  // make sure all the required arguments are present.
+  self.requiredArguments = function requiredArguments (argv) {
+    const demandedOptions = yargs.getDemandedOptions()
+    let missing = null
+
+    Object.keys(demandedOptions).forEach((key) => {
+      if (!argv.hasOwnProperty(key) || typeof argv[key] === 'undefined') {
+        missing = missing || {}
+        missing[key] = demandedOptions[key]
+      }
+    })
+
+    if (missing) {
+      const customMsgs = []
+      Object.keys(missing).forEach((key) => {
+        const msg = missing[key]
+        if (msg && customMsgs.indexOf(msg) < 0) {
+          customMsgs.push(msg)
+        }
+      })
+
+      const customMsg = customMsgs.length ? `\n${customMsgs.join('\n')}` : ''
+
+      usage.fail(__n(
+        'Missing required argument: %s',
+        'Missing required arguments: %s',
+        Object.keys(missing).length,
+        Object.keys(missing).join(', ') + customMsg
+      ))
+    }
+  }
+
+  // check for unknown arguments (strict-mode).
+  self.unknownArguments = function unknownArguments (argv, aliases, positionalMap) {
+    const commandKeys = yargs.getCommandInstance().getCommands()
+    const unknown = []
+    const currentContext = yargs.getContext()
+
+    Object.keys(argv).forEach((key) => {
+      if (specialKeys.indexOf(key) === -1 &&
+        !positionalMap.hasOwnProperty(key) &&
+        !yargs._getParseContext().hasOwnProperty(key) &&
+        !aliases.hasOwnProperty(key)
+      ) {
+        unknown.push(key)
+      }
+    })
+
+    if (commandKeys.length > 0) {
+      argv._.slice(currentContext.commands.length).forEach((key) => {
+        if (commandKeys.indexOf(key) === -1) {
+          unknown.push(key)
+        }
+      })
+    }
+
+    if (unknown.length > 0) {
+      usage.fail(__n(
+        'Unknown argument: %s',
+        'Unknown arguments: %s',
+        unknown.length,
+        unknown.join(', ')
+      ))
+    }
+  }
+
+  // validate arguments limited to enumerated choices
+  self.limitedChoices = function limitedChoices (argv) {
+    const options = yargs.getOptions()
+    const invalid = {}
+
+    if (!Object.keys(options.choices).length) return
+
+    Object.keys(argv).forEach((key) => {
+      if (specialKeys.indexOf(key) === -1 &&
+        options.choices.hasOwnProperty(key)) {
+        [].concat(argv[key]).forEach((value) => {
+          // TODO case-insensitive configurability
+          if (options.choices[key].indexOf(value) === -1 &&
+              value !== undefined) {
+            invalid[key] = (invalid[key] || []).concat(value)
+          }
+        })
+      }
+    })
+
+    const invalidKeys = Object.keys(invalid)
+
+    if (!invalidKeys.length) return
+
+    let msg = __('Invalid values:')
+    invalidKeys.forEach((key) => {
+      msg += `\n  ${__(
+        'Argument: %s, Given: %s, Choices: %s',
+        key,
+        usage.stringifiedValues(invalid[key]),
+        usage.stringifiedValues(options.choices[key])
+      )}`
+    })
+    usage.fail(msg)
+  }
+
+  // custom checks, added using the `check` option on yargs.
+  let checks = []
+  self.check = function check (f, global) {
+    checks.push({
+      func: f,
+      global
+    })
+  }
+
+  self.customChecks = function customChecks (argv, aliases) {
+    for (let i = 0, f; (f = checks[i]) !== undefined; i++) {
+      const func = f.func
+      let result = null
+      try {
+        result = func(argv, aliases)
+      } catch (err) {
+        usage.fail(err.message ? err.message : err, err)
+        continue
+      }
+
+      if (!result) {
+        usage.fail(__('Argument check failed: %s', func.toString()))
+      } else if (typeof result === 'string' || result instanceof Error) {
+        usage.fail(result.toString(), result)
+      }
+    }
+  }
+
+  // check implications, argument foo implies => argument bar.
+  let implied = {}
+  self.implies = function implies (key, value) {
+    argsert('<string|object> [array|number|string]', [key, value], arguments.length)
+
+    if (typeof key === 'object') {
+      Object.keys(key).forEach((k) => {
+        self.implies(k, key[k])
+      })
+    } else {
+      yargs.global(key)
+      if (!implied[key]) {
+        implied[key] = []
+      }
+      if (Array.isArray(value)) {
+        value.forEach((i) => self.implies(key, i))
+      } else {
+        implied[key].push(value)
+      }
+    }
+  }
+  self.getImplied = function getImplied () {
+    return implied
+  }
+
+  self.implications = function implications (argv) {
+    const implyFail = []
+
+    Object.keys(implied).forEach((key) => {
+      const origKey = key
+      ;(implied[key] || []).forEach((value) => {
+        let num
+        let key = origKey
+        const origValue = value
+
+        // convert string '1' to number 1
+        num = Number(key)
+        key = isNaN(num) ? key : num
+
+        if (typeof key === 'number') {
+          // check length of argv._
+          key = argv._.length >= key
+        } else if (key.match(/^--no-.+/)) {
+          // check if key doesn't exist
+          key = key.match(/^--no-(.+)/)[1]
+          key = !argv[key]
+        } else {
+          // check if key exists
+          key = argv[key]
+        }
+
+        num = Number(value)
+        value = isNaN(num) ? value : num
+
+        if (typeof value === 'number') {
+          value = argv._.length >= value
+        } else if (value.match(/^--no-.+/)) {
+          value = value.match(/^--no-(.+)/)[1]
+          value = !argv[value]
+        } else {
+          value = argv[value]
+        }
+        if (key && !value) {
+          implyFail.push(` ${origKey} -> ${origValue}`)
+        }
+      })
+    })
+
+    if (implyFail.length) {
+      let msg = `${__('Implications failed:')}\n`
+
+      implyFail.forEach((value) => {
+        msg += (value)
+      })
+
+      usage.fail(msg)
+    }
+  }
+
+  let conflicting = {}
+  self.conflicts = function conflicts (key, value) {
+    argsert('<string|object> [array|string]', [key, value], arguments.length)
+
+    if (typeof key === 'object') {
+      Object.keys(key).forEach((k) => {
+        self.conflicts(k, key[k])
+      })
+    } else {
+      yargs.global(key)
+      if (!conflicting[key]) {
+        conflicting[key] = []
+      }
+      if (Array.isArray(value)) {
+        value.forEach((i) => self.conflicts(key, i))
+      } else {
+        conflicting[key].push(value)
+      }
+    }
+  }
+  self.getConflicting = () => conflicting
+
+  self.conflicting = function conflictingFn (argv) {
+    Object.keys(argv).forEach((key) => {
+      if (conflicting[key]) {
+        conflicting[key].forEach((value) => {
+          // we default keys to 'undefined' that have been configured, we should not
+          // apply conflicting check unless they are a value other than 'undefined'.
+          if (value && argv[key] !== undefined && argv[value] !== undefined) {
+            usage.fail(__(`Arguments ${key} and ${value} are mutually exclusive`))
+          }
+        })
+      }
+    })
+  }
+
+  self.recommendCommands = function recommendCommands (cmd, potentialCommands) {
+    const distance = require('./levenshtein')
+    const threshold = 3 // if it takes more than three edits, let's move on.
+    potentialCommands = potentialCommands.sort((a, b) => b.length - a.length)
+
+    let recommended = null
+    let bestDistance = Infinity
+    for (let i = 0, candidate; (candidate = potentialCommands[i]) !== undefined; i++) {
+      const d = distance(cmd, candidate)
+      if (d <= threshold && d < bestDistance) {
+        bestDistance = d
+        recommended = candidate
+      }
+    }
+    if (recommended) usage.fail(__('Did you mean %s?', recommended))
+  }
+
+  self.reset = function reset (localLookup) {
+    implied = objFilter(implied, (k, v) => !localLookup[k])
+    conflicting = objFilter(conflicting, (k, v) => !localLookup[k])
+    checks = checks.filter(c => c.global)
+    return self
+  }
+
+  let frozen
+  self.freeze = function freeze () {
+    frozen = {}
+    frozen.implied = implied
+    frozen.checks = checks
+    frozen.conflicting = conflicting
+  }
+  self.unfreeze = function unfreeze () {
+    implied = frozen.implied
+    checks = frozen.checks
+    conflicting = frozen.conflicting
+    frozen = undefined
+  }
+
+  return self
+}
diff --git a/node_modules/yargs/lib/yerror.js b/node_modules/yargs/lib/yerror.js
new file mode 100644
index 0000000..53375a0
--- /dev/null
+++ b/node_modules/yargs/lib/yerror.js
@@ -0,0 +1,11 @@
+'use strict'
+function YError (msg) {
+  this.name = 'YError'
+  this.message = msg || 'yargs error'
+  Error.captureStackTrace(this, YError)
+}
+
+YError.prototype = Object.create(Error.prototype)
+YError.prototype.constructor = YError
+
+module.exports = YError
diff --git a/node_modules/yargs/locales/be.json b/node_modules/yargs/locales/be.json
new file mode 100644
index 0000000..141ebe1
--- /dev/null
+++ b/node_modules/yargs/locales/be.json
@@ -0,0 +1,39 @@
+{
+  "Commands:": "Каманды:",
+  "Options:": "Опцыі:",
+  "Examples:": "Прыклады:",
+  "boolean": "булевы тып",
+  "count": "падлік",
+  "string": "радковы тып",
+  "number": "лік",
+  "array": "масіў",
+  "required": "неабходна",
+  "default:": "па змаўчанні:",
+  "choices:": "магчымасці:",
+  "aliases:": "аліасы:",
+  "generated-value": "згенераванае значэнне",
+  "Not enough non-option arguments: got %s, need at least %s": "Недастаткова неапцыйных аргументаў: ёсць %s, трэба як мінімум %s",
+  "Too many non-option arguments: got %s, maximum of %s": "Занадта шмат неапцыйных аргументаў: ёсць %s, максімум дапушчальна %s",
+  "Missing argument value: %s": {
+    "one": "Не хапае значэння аргументу: %s",
+    "other": "Не хапае значэнняў аргументаў: %s"
+  },
+  "Missing required argument: %s": {
+    "one": "Не хапае неабходнага аргументу: %s",
+    "other": "Не хапае неабходных аргументаў: %s"
+  },
+  "Unknown argument: %s": {
+    "one": "Невядомы аргумент: %s",
+    "other": "Невядомыя аргументы: %s"
+  },
+  "Invalid values:": "Несапраўдныя значэння:",
+  "Argument: %s, Given: %s, Choices: %s": "Аргумент: %s, Дадзенае значэнне: %s, Магчымасці: %s",
+  "Argument check failed: %s": "Праверка аргументаў не ўдалася: %s",
+  "Implications failed:": "Дадзены аргумент патрабуе наступны дадатковы аргумент:",
+  "Not enough arguments following: %s": "Недастаткова наступных аргументаў: %s",
+  "Invalid JSON config file: %s": "Несапраўдны файл канфігурацыі JSON: %s",
+  "Path to JSON config file": "Шлях да файла канфігурацыі JSON",
+  "Show help": "Паказаць дапамогу",
+  "Show version number": "Паказаць нумар версіі",
+  "Did you mean %s?": "Вы мелі на ўвазе %s?"
+}
diff --git a/node_modules/yargs/locales/de.json b/node_modules/yargs/locales/de.json
new file mode 100644
index 0000000..d805710
--- /dev/null
+++ b/node_modules/yargs/locales/de.json
@@ -0,0 +1,39 @@
+{
+  "Commands:": "Kommandos:",
+  "Options:": "Optionen:",
+  "Examples:": "Beispiele:",
+  "boolean": "boolean",
+  "count": "Zähler",
+  "string": "string",
+  "number": "Zahl",
+  "array": "array",
+  "required": "erforderlich",
+  "default:": "Standard:",
+  "choices:": "Möglichkeiten:",
+  "aliases:": "Aliase:",
+  "generated-value": "Generierter-Wert",
+  "Not enough non-option arguments: got %s, need at least %s": "Nicht genügend Argumente ohne Optionen: %s vorhanden, mindestens %s benötigt",
+  "Too many non-option arguments: got %s, maximum of %s": "Zu viele Argumente ohne Optionen: %s vorhanden, maximal %s erlaubt",
+  "Missing argument value: %s": {
+    "one": "Fehlender Argumentwert: %s",
+    "other": "Fehlende Argumentwerte: %s"
+  },
+  "Missing required argument: %s": {
+    "one": "Fehlendes Argument: %s",
+    "other": "Fehlende Argumente: %s"
+  },
+  "Unknown argument: %s": {
+    "one": "Unbekanntes Argument: %s",
+    "other": "Unbekannte Argumente: %s"
+  },
+  "Invalid values:": "Unzulässige Werte:",
+  "Argument: %s, Given: %s, Choices: %s": "Argument: %s, Gegeben: %s, Möglichkeiten: %s",
+  "Argument check failed: %s": "Argumente-Check fehlgeschlagen: %s",
+  "Implications failed:": "Implikationen fehlgeschlagen:",
+  "Not enough arguments following: %s": "Nicht genügend Argumente nach: %s",
+  "Invalid JSON config file: %s": "Fehlerhafte JSON-Config Datei: %s",
+  "Path to JSON config file": "Pfad zur JSON-Config Datei",
+  "Show help": "Hilfe anzeigen",
+  "Show version number": "Version anzeigen",
+  "Did you mean %s?": "Meintest du %s?"
+}
diff --git a/node_modules/yargs/locales/en.json b/node_modules/yargs/locales/en.json
new file mode 100644
index 0000000..fc65c2a
--- /dev/null
+++ b/node_modules/yargs/locales/en.json
@@ -0,0 +1,42 @@
+{
+  "Commands:": "Commands:",
+  "Options:": "Options:",
+  "Examples:": "Examples:",
+  "boolean": "boolean",
+  "count": "count",
+  "string": "string",
+  "number": "number",
+  "array": "array",
+  "required": "required",
+  "default:": "default:",
+  "choices:": "choices:",
+  "aliases:": "aliases:",
+  "generated-value": "generated-value",
+  "Not enough non-option arguments: got %s, need at least %s": "Not enough non-option arguments: got %s, need at least %s",
+  "Too many non-option arguments: got %s, maximum of %s": "Too many non-option arguments: got %s, maximum of %s",
+  "Missing argument value: %s": {
+    "one": "Missing argument value: %s",
+    "other": "Missing argument values: %s"
+  },
+  "Missing required argument: %s": {
+    "one": "Missing required argument: %s",
+    "other": "Missing required arguments: %s"
+  },
+  "Unknown argument: %s": {
+    "one": "Unknown argument: %s",
+    "other": "Unknown arguments: %s"
+  },
+  "Invalid values:": "Invalid values:",
+  "Argument: %s, Given: %s, Choices: %s": "Argument: %s, Given: %s, Choices: %s",
+  "Argument check failed: %s": "Argument check failed: %s",
+  "Implications failed:": "Implications failed:",
+  "Not enough arguments following: %s": "Not enough arguments following: %s",
+  "Invalid JSON config file: %s": "Invalid JSON config file: %s",
+  "Path to JSON config file": "Path to JSON config file",
+  "Show help": "Show help",
+  "Show version number": "Show version number",
+  "Did you mean %s?": "Did you mean %s?",
+  "Arguments %s and %s are mutually exclusive" : "Arguments %s and %s are mutually exclusive",
+  "Positionals:": "Positionals:",
+  "command": "command"
+}
diff --git a/node_modules/yargs/locales/es.json b/node_modules/yargs/locales/es.json
new file mode 100644
index 0000000..d7c8af9
--- /dev/null
+++ b/node_modules/yargs/locales/es.json
@@ -0,0 +1,39 @@
+{
+  "Commands:": "Comandos:",
+  "Options:": "Opciones:",
+  "Examples:": "Ejemplos:",
+  "boolean": "booleano",
+  "count": "cuenta",
+  "string": "cadena de caracteres",
+  "number": "número",
+  "array": "tabla",
+  "required": "requerido",
+  "default:": "defecto:",
+  "choices:": "selección:",
+  "aliases:": "alias:",
+  "generated-value": "valor-generado",
+  "Not enough non-option arguments: got %s, need at least %s": "Hacen falta argumentos no-opcionales: Número recibido %s, necesita por lo menos %s",
+  "Too many non-option arguments: got %s, maximum of %s": "Demasiados argumentos no-opcionales: Número recibido %s, máximo es %s",
+  "Missing argument value: %s": {
+    "one": "Falta argumento: %s",
+    "other": "Faltan argumentos: %s"
+  },
+  "Missing required argument: %s": {
+    "one": "Falta argumento requerido: %s",
+    "other": "Faltan argumentos requeridos: %s"
+  },
+  "Unknown argument: %s": {
+    "one": "Argumento desconocido: %s",
+    "other": "Argumentos desconocidos: %s"
+  },
+  "Invalid values:": "Valores inválidos:",
+  "Argument: %s, Given: %s, Choices: %s": "Argumento: %s, Recibido: %s, Seleccionados: %s",
+  "Argument check failed: %s": "Verificación de argumento ha fallado: %s",
+  "Implications failed:": "Implicaciones fallidas:",
+  "Not enough arguments following: %s": "No hay suficientes argumentos después de: %s",
+  "Invalid JSON config file: %s": "Archivo de configuración JSON inválido: %s",
+  "Path to JSON config file": "Ruta al archivo de configuración JSON",
+  "Show help": "Muestra ayuda",
+  "Show version number": "Muestra número de versión",
+  "Did you mean %s?": "Quisiste decir %s?"
+}
diff --git a/node_modules/yargs/locales/fr.json b/node_modules/yargs/locales/fr.json
new file mode 100644
index 0000000..481f47e
--- /dev/null
+++ b/node_modules/yargs/locales/fr.json
@@ -0,0 +1,37 @@
+{
+  "Commands:": "Commandes:",
+  "Options:": "Options:",
+  "Examples:": "Exemples:",
+  "boolean": "booléen",
+  "count": "comptage",
+  "string": "chaine de caractère",
+  "number": "nombre",
+  "array": "tableau",
+  "required": "requis",
+  "default:": "défaut:",
+  "choices:": "choix:",
+  "generated-value": "valeur générée",
+  "Not enough non-option arguments: got %s, need at least %s": "Pas assez d'arguments non-option: reçu %s, besoin d'au moins %s",
+  "Too many non-option arguments: got %s, maximum of %s": "Trop d'arguments non-option: reçu %s, maximum %s",
+  "Missing argument value: %s": {
+    "one": "Argument manquant: %s",
+    "other": "Arguments manquants: %s"
+  },
+  "Missing required argument: %s": {
+    "one": "Argument requis manquant: %s",
+    "other": "Arguments requis manquants: %s"
+  },
+  "Unknown argument: %s": {
+    "one": "Argument inconnu: %s",
+    "other": "Arguments inconnus: %s"
+  },
+  "Invalid values:": "Valeurs invalides:",
+  "Argument: %s, Given: %s, Choices: %s": "Argument: %s, Donné: %s, Choix: %s",
+  "Argument check failed: %s": "Echec de la vérification de l'argument: %s",
+  "Implications failed:": "Implications échouées:",
+  "Not enough arguments following: %s": "Pas assez d'arguments suivant: %s",
+  "Invalid JSON config file: %s": "Fichier de configuration JSON invalide: %s",
+  "Path to JSON config file": "Chemin du fichier de configuration JSON",
+  "Show help": "Affiche de l'aide",
+  "Show version number": "Affiche le numéro de version"
+}
diff --git a/node_modules/yargs/locales/hi.json b/node_modules/yargs/locales/hi.json
new file mode 100644
index 0000000..2cd677a
--- /dev/null
+++ b/node_modules/yargs/locales/hi.json
@@ -0,0 +1,42 @@
+{
+  "Commands:": "आदेश:",
+  "Options:": "विकल्प:",
+  "Examples:": "उदाहरण:",
+  "boolean": "सत्यता",
+  "count": "संख्या",
+  "string": "वर्णों का तार ",
+  "number": "अंक",
+  "array": "सरणी",
+  "required": "आवश्यक",
+  "default:": "डिफॉल्ट:",
+  "choices:": "विकल्प:",
+  "aliases:": "उपनाम:",
+  "generated-value": "उत्पन्न-मूल्य",
+  "Not enough non-option arguments: got %s, need at least %s": "पर्याप्त गैर-विकल्प तर्क प्राप्त नहीं: %s प्राप्त, कम से कम %s की आवश्यकता है",
+  "Too many non-option arguments: got %s, maximum of %s": "बहुत सारे गैर-विकल्प तर्क: %s प्राप्त, अधिकतम %s मान्य",
+  "Missing argument value: %s": {
+    "one": "कुछ तर्को के मूल्य गुम हैं: %s",
+    "other": "कुछ तर्को के मूल्य गुम हैं: %s"
+  },
+  "Missing required argument: %s": {
+    "one": "आवश्यक तर्क गुम हैं: %s",
+    "other": "आवश्यक तर्क गुम हैं: %s"
+  },
+  "Unknown argument: %s": {
+    "one": "अज्ञात तर्क प्राप्त: %s",
+    "other": "अज्ञात तर्क प्राप्त: %s"
+  },
+  "Invalid values:": "अमान्य मूल्य:",
+  "Argument: %s, Given: %s, Choices: %s": "तर्क: %s, प्राप्त: %s, विकल्प: %s",
+  "Argument check failed: %s": "तर्क जांच विफल: %s",
+  "Implications failed:": "दिए गए तर्क के लिए अतिरिक्त तर्क की अपेक्षा है:",
+  "Not enough arguments following: %s": "निम्नलिखित के बाद पर्याप्त तर्क नहीं प्राप्त: %s",
+  "Invalid JSON config file: %s": "अमान्य JSON config फाइल: %s",
+  "Path to JSON config file": "JSON config फाइल का पथ",
+  "Show help": "सहायता दिखाएँ",
+  "Show version number": "Version संख्या दिखाएँ",
+  "Did you mean %s?": "क्या आपका मतलब है %s?",
+  "Arguments %s and %s are mutually exclusive" : "तर्क %s और %s परस्पर अनन्य हैं",
+  "Positionals:": "स्थानीय:",
+  "command": "आदेश"
+}
diff --git a/node_modules/yargs/locales/hu.json b/node_modules/yargs/locales/hu.json
new file mode 100644
index 0000000..7b7d166
--- /dev/null
+++ b/node_modules/yargs/locales/hu.json
@@ -0,0 +1,39 @@
+{
+  "Commands:": "Parancsok:",
+  "Options:": "Opciók:",
+  "Examples:": "Példák:",
+  "boolean": "boolean",
+  "count": "számláló",
+  "string": "szöveg",
+  "number": "szám",
+  "array": "tömb",
+  "required": "kötelező",
+  "default:": "alapértelmezett:",
+  "choices:": "lehetőségek:",
+  "aliases:": "aliaszok:",
+  "generated-value": "generált-érték",
+  "Not enough non-option arguments: got %s, need at least %s": "Nincs elég nem opcionális argumentum: %s van, legalább %s kell",
+  "Too many non-option arguments: got %s, maximum of %s": "Túl sok nem opciánlis argumentum van: %s van, maximum %s lehet",
+  "Missing argument value: %s": {
+    "one": "Hiányzó argumentum érték: %s",
+    "other": "Hiányzó argumentum értékek: %s"
+  },
+  "Missing required argument: %s": {
+    "one": "Hiányzó kötelező argumentum: %s",
+    "other": "Hiányzó kötelező argumentumok: %s"
+  },
+  "Unknown argument: %s": {
+    "one": "Ismeretlen argumentum: %s",
+    "other": "Ismeretlen argumentumok: %s"
+  },
+  "Invalid values:": "Érvénytelen érték:",
+  "Argument: %s, Given: %s, Choices: %s": "Argumentum: %s, Megadott: %s, Lehetőségek: %s",
+  "Argument check failed: %s": "Argumentum ellenőrzés sikertelen: %s",
+  "Implications failed:": "Implikációk sikertelenek:",
+  "Not enough arguments following: %s": "Nem elég argumentum követi: %s",
+  "Invalid JSON config file: %s": "Érvénytelen JSON konfigurációs file: %s",
+  "Path to JSON config file": "JSON konfigurációs file helye",
+  "Show help": "Súgo megjelenítése",
+  "Show version number": "Verziószám megjelenítése",
+  "Did you mean %s?": "Erre gondoltál %s?"
+}
diff --git a/node_modules/yargs/locales/id.json b/node_modules/yargs/locales/id.json
new file mode 100644
index 0000000..87e441c
--- /dev/null
+++ b/node_modules/yargs/locales/id.json
@@ -0,0 +1,43 @@
+
+{
+  "Commands:": "Perintah:",
+  "Options:": "Pilihan:",
+  "Examples:": "Contoh:",
+  "boolean": "boolean",
+  "count": "jumlah",
+  "number": "nomor",
+  "string": "string",
+  "array": "larik",
+  "required": "diperlukan",
+  "default:": "bawaan:",
+  "aliases:": "istilah lain:",
+  "choices:": "pilihan:",
+  "generated-value": "nilai-yang-dihasilkan",
+  "Not enough non-option arguments: got %s, need at least %s": "Argumen wajib kurang: hanya %s, minimal %s",
+  "Too many non-option arguments: got %s, maximum of %s": "Terlalu banyak argumen wajib: ada %s, maksimal %s",
+  "Missing argument value: %s": {
+    "one": "Kurang argumen: %s",
+    "other": "Kurang argumen: %s"
+  },
+  "Missing required argument: %s": {
+    "one": "Kurang argumen wajib: %s",
+    "other": "Kurang argumen wajib: %s"
+  },
+  "Unknown argument: %s": {
+    "one": "Argumen tak diketahui: %s",
+    "other": "Argumen tak diketahui: %s"
+  },
+  "Invalid values:": "Nilai-nilai tidak valid:",
+  "Argument: %s, Given: %s, Choices: %s": "Argumen: %s, Diberikan: %s, Pilihan: %s",
+  "Argument check failed: %s": "Pemeriksaan argument gagal: %s",
+  "Implications failed:": "Implikasi gagal:",
+  "Not enough arguments following: %s": "Kurang argumen untuk: %s",
+  "Invalid JSON config file: %s": "Berkas konfigurasi JSON tidak valid: %s",
+  "Path to JSON config file": "Alamat berkas konfigurasi JSON",
+  "Show help": "Lihat bantuan",
+  "Show version number": "Lihat nomor versi",
+  "Did you mean %s?": "Maksud Anda: %s?",
+  "Arguments %s and %s are mutually exclusive" : "Argumen %s dan %s saling eksklusif",
+  "Positionals:": "Posisional-posisional:",
+  "command": "perintah"
+}
diff --git a/node_modules/yargs/locales/it.json b/node_modules/yargs/locales/it.json
new file mode 100644
index 0000000..f9eb375
--- /dev/null
+++ b/node_modules/yargs/locales/it.json
@@ -0,0 +1,39 @@
+{
+  "Commands:": "Comandi:",
+  "Options:": "Opzioni:",
+  "Examples:": "Esempi:",
+  "boolean": "booleano",
+  "count": "contatore",
+  "string": "stringa",
+  "number": "numero",
+  "array": "vettore",
+  "required": "richiesto",
+  "default:": "predefinito:",
+  "choices:": "scelte:",
+  "aliases:": "alias:",
+  "generated-value": "valore generato",
+  "Not enough non-option arguments: got %s, need at least %s": "Numero insufficiente di argomenti non opzione: inseriti %s, richiesti almeno %s",
+  "Too many non-option arguments: got %s, maximum of %s": "Troppi argomenti non opzione: inseriti %s, massimo possibile %s",
+  "Missing argument value: %s": {
+    "one": "Argomento mancante: %s",
+    "other": "Argomenti mancanti: %s"
+  },
+  "Missing required argument: %s": {
+    "one": "Argomento richiesto mancante: %s",
+    "other": "Argomenti richiesti mancanti: %s"
+  },
+  "Unknown argument: %s": {
+    "one": "Argomento sconosciuto: %s",
+    "other": "Argomenti sconosciuti: %s"
+  },
+  "Invalid values:": "Valori non validi:",
+  "Argument: %s, Given: %s, Choices: %s": "Argomento: %s, Richiesto: %s, Scelte: %s",
+  "Argument check failed: %s": "Controllo dell'argomento fallito: %s",
+  "Implications failed:": "Argomenti impliciti non soddisfatti:",
+  "Not enough arguments following: %s": "Argomenti insufficienti dopo: %s",
+  "Invalid JSON config file: %s": "File di configurazione JSON non valido: %s",
+  "Path to JSON config file": "Percorso del file di configurazione JSON",
+  "Show help": "Mostra la schermata di aiuto",
+  "Show version number": "Mostra il numero di versione",
+  "Did you mean %s?": "Intendi forse %s?"
+}
diff --git a/node_modules/yargs/locales/ja.json b/node_modules/yargs/locales/ja.json
new file mode 100644
index 0000000..64ee6d3
--- /dev/null
+++ b/node_modules/yargs/locales/ja.json
@@ -0,0 +1,42 @@
+{
+  "Commands:": "コマンド:",
+  "Options:": "オプション:",
+  "Examples:": "例:",
+  "boolean": "真偽",
+  "count": "カウント",
+  "string": "文字列",
+  "number": "数値",
+  "array": "配列",
+  "required": "必須",
+  "default:": "デフォルト:",
+  "choices:": "選択してください:",
+  "aliases:": "エイリアス:",
+  "generated-value": "生成された値",
+  "Not enough non-option arguments: got %s, need at least %s": "オプションではない引数が %s 個では不足しています。少なくとも %s 個の引数が必要です:",
+  "Too many non-option arguments: got %s, maximum of %s": "オプションではない引数が %s 個では多すぎます。最大で %s 個までです:",
+  "Missing argument value: %s": {
+    "one": "引数が見つかりません: %s",
+    "other": "引数が見つかりません: %s"
+  },
+  "Missing required argument: %s": {
+    "one": "必須の引数が見つかりません: %s",
+    "other": "必須の引数が見つかりません: %s"
+  },
+  "Unknown argument: %s": {
+    "one": "未知の引数です: %s",
+    "other": "未知の引数です: %s"
+  },
+  "Invalid values:": "不正な値です:",
+  "Argument: %s, Given: %s, Choices: %s": "引数は %s です。指定できるのは %s つです。選択してください: %s",
+  "Argument check failed: %s": "引数のチェックに失敗しました: %s",
+  "Implications failed:": "オプションの組み合わせで不正が生じました:",
+  "Not enough arguments following: %s": "次の引数が不足しています。: %s",
+  "Invalid JSON config file: %s": "JSONの設定ファイルが不正です: %s",
+  "Path to JSON config file": "JSONの設定ファイルまでのpath",
+  "Show help": "ヘルプを表示",
+  "Show version number": "バージョンを表示",
+  "Did you mean %s?": "もしかして %s?",
+  "Arguments %s and %s are mutually exclusive" : "引数 %s と %s は同時に指定できません",
+  "Positionals:": "位置:",
+  "command": "コマンド"
+}
diff --git a/node_modules/yargs/locales/ko.json b/node_modules/yargs/locales/ko.json
new file mode 100644
index 0000000..0eaeab2
--- /dev/null
+++ b/node_modules/yargs/locales/ko.json
@@ -0,0 +1,42 @@
+{
+  "Commands:": "명령:",
+  "Options:": "옵션:",
+  "Examples:": "예시:",
+  "boolean": "여부",
+  "count": "개수",
+  "string": "문자열",
+  "number": "숫자",
+  "array": "배열",
+  "required": "필수",
+  "default:": "기본:",
+  "choices:": "선택:",
+  "aliases:": "별칭:",
+  "generated-value": "생성된 값",
+  "Not enough non-option arguments: got %s, need at least %s": "옵션이 아닌 인자가 충분치 않습니다: %s개를 받았지만, 적어도 %s개는 필요합니다",
+  "Too many non-option arguments: got %s, maximum of %s": "옵션이 아닌 인자가 너무 많습니다: %s개를 받았지만, %s개 이하여야 합니다",
+  "Missing argument value: %s": {
+    "one": "인자값을 받지 못했습니다: %s",
+    "other": "인자값들을 받지 못했습니다: %s"
+  },
+  "Missing required argument: %s": {
+    "one": "필수 인자를 받지 못했습니다: %s",
+    "other": "필수 인자들을 받지 못했습니다: %s"
+  },
+  "Unknown argument: %s": {
+    "one": "알 수 없는 인자입니다: %s",
+    "other": "알 수 없는 인자들입니다: %s"
+  },
+  "Invalid values:": "잘못된 값입니다:",
+  "Argument: %s, Given: %s, Choices: %s": "인자: %s, 입력받은 값: %s, 선택지: %s",
+  "Argument check failed: %s": "유효하지 않은 인자입니다: %s",
+  "Implications failed:": "옵션의 조합이 잘못되었습니다:",
+  "Not enough arguments following: %s": "인자가 충분하게 주어지지 않았습니다: %s",
+  "Invalid JSON config file: %s": "유효하지 않은 JSON 설정파일입니다: %s",
+  "Path to JSON config file": "JSON 설정파일 경로",
+  "Show help": "도움말을 보여줍니다",
+  "Show version number": "버전 넘버를 보여줍니다",
+  "Did you mean %s?": "찾고계신게 %s입니까?",
+  "Arguments %s and %s are mutually exclusive" : "%s와 %s 인자는 같이 사용될 수 없습니다",
+  "Positionals:": "위치:",
+  "command": "명령"
+}
diff --git a/node_modules/yargs/locales/nb.json b/node_modules/yargs/locales/nb.json
new file mode 100644
index 0000000..fc607fb
--- /dev/null
+++ b/node_modules/yargs/locales/nb.json
@@ -0,0 +1,37 @@
+{
+  "Commands:": "Kommandoer:",
+  "Options:": "Alternativer:",
+  "Examples:": "Eksempler:",
+  "boolean": "boolsk",
+  "count": "antall",
+  "string": "streng",
+  "number": "nummer",
+  "array": "matrise",
+  "required": "obligatorisk",
+  "default:": "standard:",
+  "choices:": "valg:",
+  "generated-value": "generert-verdi",
+  "Not enough non-option arguments: got %s, need at least %s": "Ikke nok ikke-alternativ argumenter: fikk %s, trenger minst %s",
+  "Too many non-option arguments: got %s, maximum of %s": "For mange ikke-alternativ argumenter: fikk %s, maksimum %s",
+  "Missing argument value: %s": {
+    "one": "Mangler argument verdi: %s",
+    "other": "Mangler argument verdier: %s"
+  },
+  "Missing required argument: %s": {
+    "one": "Mangler obligatorisk argument: %s",
+    "other": "Mangler obligatoriske argumenter: %s"
+  },
+  "Unknown argument: %s": {
+    "one": "Ukjent argument: %s",
+    "other": "Ukjente argumenter: %s"
+  },
+  "Invalid values:": "Ugyldige verdier:",
+  "Argument: %s, Given: %s, Choices: %s": "Argument: %s, Gitt: %s, Valg: %s",
+  "Argument check failed: %s": "Argument sjekk mislyktes: %s",
+  "Implications failed:": "Konsekvensene mislyktes:",
+  "Not enough arguments following: %s": "Ikke nok følgende argumenter: %s",
+  "Invalid JSON config file: %s": "Ugyldig JSON konfigurasjonsfil: %s",
+  "Path to JSON config file": "Bane til JSON konfigurasjonsfil",
+  "Show help": "Vis hjelp",
+  "Show version number": "Vis versjonsnummer"
+}
diff --git a/node_modules/yargs/locales/nl.json b/node_modules/yargs/locales/nl.json
new file mode 100644
index 0000000..1d14472
--- /dev/null
+++ b/node_modules/yargs/locales/nl.json
@@ -0,0 +1,42 @@
+{
+  "Commands:": "Opdrachten:",
+  "Options:": "Opties:",
+  "Examples:": "Voorbeelden:",
+  "boolean": "boolean",
+  "count": "aantal",
+  "string": "text",
+  "number": "nummer",
+  "array": "lijst",
+  "required": "verplicht",
+  "default:": "standaard:",
+  "choices:": "keuzes:",
+  "aliases:": "aliassen:",
+  "generated-value": "gegenereerde waarde",
+  "Not enough non-option arguments: got %s, need at least %s": "Niet genoeg non-optie argumenten. Gekregen: %s, minstens nodig: %s",
+  "Too many non-option arguments: got %s, maximum of %s": "Te veel non-optie argumenten. Gekregen: %s, maximum: %s",
+  "Missing argument value: %s": {
+    "one": "Missing argument value: %s",
+    "other": "Missing argument values: %s"
+  },
+  "Missing required argument: %s": {
+    "one": "Missend verplichte argument: %s",
+    "other": "Missende verplichte argumenten: %s"
+  },
+  "Unknown argument: %s": {
+    "one": "Onbekend argument: %s",
+    "other": "Onbekende argumenten: %s"
+  },
+  "Invalid values:": "Ongeldige waardes:",
+  "Argument: %s, Given: %s, Choices: %s": "Argument: %s, Gegeven: %s, Keuzes: %s",
+  "Argument check failed: %s": "Argument check mislukt: %s",
+  "Implications failed:": "Implicaties mislukt:",
+  "Not enough arguments following: %s": "Niet genoeg argumenten na: %s",
+  "Invalid JSON config file: %s": "Ongeldig JSON configuratiebestand: %s",
+  "Path to JSON config file": "Pad naar JSON configuratiebestand",
+  "Show help": "Toon help",
+  "Show version number": "Toon versie nummer",
+  "Did you mean %s?": "Bedoelde u misschien %s?",
+  "Arguments %s and %s are mutually exclusive": "Argumenten %s en %s zijn onderling uitsluitend",
+  "Positionals:": "Positie-afhankelijke argumenten",
+  "command": "commando"
+}
diff --git a/node_modules/yargs/locales/nn.json b/node_modules/yargs/locales/nn.json
new file mode 100644
index 0000000..5e03c50
--- /dev/null
+++ b/node_modules/yargs/locales/nn.json
@@ -0,0 +1,39 @@
+{
+  "Commands:": "Kommandoar:",
+  "Options:": "Alternativ:",
+  "Examples:": "Døme:",
+  "boolean": "boolsk",
+  "count": "mengd",
+  "string": "streng",
+  "number": "nummer",
+  "array": "matrise",
+  "required": "obligatorisk",
+  "default:": "standard:",
+  "choices:": "val:",
+  "generated-value": "generert-verdi",
+  "Not enough non-option arguments: got %s, need at least %s":
+    "Ikkje nok ikkje-alternativ argument: fekk %s, treng minst %s",
+  "Too many non-option arguments: got %s, maximum of %s":
+    "For mange ikkje-alternativ argument: fekk %s, maksimum %s",
+  "Missing argument value: %s": {
+    "one": "Manglar argumentverdi: %s",
+    "other": "Manglar argumentverdiar: %s"
+  },
+  "Missing required argument: %s": {
+    "one": "Manglar obligatorisk argument: %s",
+    "other": "Manglar obligatoriske argument: %s"
+  },
+  "Unknown argument: %s": {
+    "one": "Ukjent argument: %s",
+    "other": "Ukjende argument: %s"
+  },
+  "Invalid values:": "Ugyldige verdiar:",
+  "Argument: %s, Given: %s, Choices: %s": "Argument: %s, Gjeve: %s, Val: %s",
+  "Argument check failed: %s": "Argument sjekk mislukkast: %s",
+  "Implications failed:": "Konsekvensane mislukkast:",
+  "Not enough arguments following: %s": "Ikkje nok fylgande argument: %s",
+  "Invalid JSON config file: %s": "Ugyldig JSON konfigurasjonsfil: %s",
+  "Path to JSON config file": "Bane til JSON konfigurasjonsfil",
+  "Show help": "Vis hjelp",
+  "Show version number": "Vis versjonsnummer"
+}
diff --git a/node_modules/yargs/locales/pirate.json b/node_modules/yargs/locales/pirate.json
new file mode 100644
index 0000000..1f4e19e
--- /dev/null
+++ b/node_modules/yargs/locales/pirate.json
@@ -0,0 +1,12 @@
+{
+  "Commands:": "Choose yer command:",
+  "Options:": "Options for me hearties!",
+  "Examples:": "Ex. marks the spot:",
+  "required": "requi-yar-ed",
+  "Missing required argument: %s": {
+    "one": "Ye be havin' to set the followin' argument land lubber: %s",
+    "other": "Ye be havin' to set the followin' arguments land lubber: %s"
+  },
+  "Show help": "Parlay this here code of conduct",
+  "Show version number": "'Tis the version ye be askin' fer"
+}
diff --git a/node_modules/yargs/locales/pl.json b/node_modules/yargs/locales/pl.json
new file mode 100644
index 0000000..6926a45
--- /dev/null
+++ b/node_modules/yargs/locales/pl.json
@@ -0,0 +1,42 @@
+{
+  "Commands:": "Polecenia:",
+  "Options:": "Opcje:",
+  "Examples:": "Przykłady:",
+  "boolean": "boolean",
+  "count": "ilość",
+  "string": "ciąg znaków",
+  "number": "liczba",
+  "array": "tablica",
+  "required": "wymagany",
+  "default:": "domyślny:",
+  "choices:": "dostępne:",
+  "aliases:": "aliasy:",
+  "generated-value": "wygenerowana-wartość",
+  "Not enough non-option arguments: got %s, need at least %s": "Niewystarczająca ilość argumentów: otrzymano %s, wymagane co najmniej %s",
+  "Too many non-option arguments: got %s, maximum of %s": "Zbyt duża ilość argumentów: otrzymano %s, wymagane co najwyżej %s",
+  "Missing argument value: %s": {
+    "one": "Brak wartości dla argumentu: %s",
+    "other": "Brak wartości dla argumentów: %s"
+  },
+  "Missing required argument: %s": {
+    "one": "Brak wymaganego argumentu: %s",
+    "other": "Brak wymaganych argumentów: %s"
+  },
+  "Unknown argument: %s": {
+    "one": "Nieznany argument: %s",
+    "other": "Nieznane argumenty: %s"
+  },
+  "Invalid values:": "Nieprawidłowe wartości:",
+  "Argument: %s, Given: %s, Choices: %s": "Argument: %s, Otrzymano: %s, Dostępne: %s",
+  "Argument check failed: %s": "Weryfikacja argumentów nie powiodła się: %s",
+  "Implications failed:": "Założenia nie zostały spełnione:",
+  "Not enough arguments following: %s": "Niewystarczająca ilość argumentów następujących po: %s",
+  "Invalid JSON config file: %s": "Nieprawidłowy plik konfiguracyjny JSON: %s",
+  "Path to JSON config file": "Ścieżka do pliku konfiguracyjnego JSON",
+  "Show help": "Pokaż pomoc",
+  "Show version number": "Pokaż numer wersji",
+  "Did you mean %s?": "Czy chodziło Ci o %s?",
+  "Arguments %s and %s are mutually exclusive": "Argumenty %s i %s wzajemnie się wykluczają",
+  "Positionals:": "Pozycyjne:",
+  "command": "polecenie"
+}
diff --git a/node_modules/yargs/locales/pt.json b/node_modules/yargs/locales/pt.json
new file mode 100644
index 0000000..75c3921
--- /dev/null
+++ b/node_modules/yargs/locales/pt.json
@@ -0,0 +1,38 @@
+{
+  "Commands:": "Comandos:",
+  "Options:": "Opções:",
+  "Examples:": "Exemplos:",
+  "boolean": "boolean",
+  "count": "contagem",
+  "string": "cadeia de caracteres",
+  "number": "número",
+  "array": "arranjo",
+  "required": "requerido",
+  "default:": "padrão:",
+  "choices:": "escolhas:",
+  "generated-value": "valor-gerado",
+  "Not enough non-option arguments: got %s, need at least %s": "Argumentos insuficientes não opcionais: Argumento %s, necessário pelo menos %s",
+  "Too many non-option arguments: got %s, maximum of %s": "Excesso de argumentos não opcionais: recebido %s, máximo de %s",
+  "Missing argument value: %s": {
+    "one": "Falta valor de argumento: %s",
+    "other": "Falta valores de argumento: %s"
+  },
+  "Missing required argument: %s": {
+    "one": "Falta argumento obrigatório: %s",
+    "other": "Faltando argumentos obrigatórios: %s"
+  },
+  "Unknown argument: %s": {
+    "one": "Argumento desconhecido: %s",
+    "other": "Argumentos desconhecidos: %s"
+  },
+  "Invalid values:": "Valores inválidos:",
+  "Argument: %s, Given: %s, Choices: %s": "Argumento: %s, Dado: %s, Escolhas: %s",
+  "Argument check failed: %s": "Verificação de argumento falhou: %s",
+  "Implications failed:": "Implicações falharam:",
+  "Not enough arguments following: %s": "Insuficientes argumentos a seguir: %s",
+  "Invalid JSON config file: %s": "Arquivo de configuração em JSON esta inválido: %s",
+  "Path to JSON config file": "Caminho para o arquivo de configuração em JSON",
+  "Show help": "Mostra ajuda",
+  "Show version number": "Mostra número de versão",
+  "Arguments %s and %s are mutually exclusive" : "Argumentos %s e %s são mutualmente exclusivos"
+}
diff --git a/node_modules/yargs/locales/pt_BR.json b/node_modules/yargs/locales/pt_BR.json
new file mode 100644
index 0000000..904cb66
--- /dev/null
+++ b/node_modules/yargs/locales/pt_BR.json
@@ -0,0 +1,42 @@
+{
+  "Commands:": "Comandos:",
+  "Options:": "Opções:",
+  "Examples:": "Exemplos:",
+  "boolean": "booleano",
+  "count": "contagem",
+  "string": "string",
+  "number": "número",
+  "array": "array",
+  "required": "obrigatório",
+  "default:": "padrão:",
+  "choices:": "opções:",
+  "aliases:": "sinônimos:",
+  "generated-value": "valor-gerado",
+  "Not enough non-option arguments: got %s, need at least %s": "Argumentos insuficientes: Argumento %s, necessário pelo menos %s",
+  "Too many non-option arguments: got %s, maximum of %s": "Excesso de argumentos: recebido %s, máximo de %s",
+  "Missing argument value: %s": {
+    "one": "Falta valor de argumento: %s",
+    "other": "Falta valores de argumento: %s"
+  },
+  "Missing required argument: %s": {
+    "one": "Falta argumento obrigatório: %s",
+    "other": "Faltando argumentos obrigatórios: %s"
+  },
+  "Unknown argument: %s": {
+    "one": "Argumento desconhecido: %s",
+    "other": "Argumentos desconhecidos: %s"
+  },
+  "Invalid values:": "Valores inválidos:",
+  "Argument: %s, Given: %s, Choices: %s": "Argumento: %s, Dado: %s, Opções: %s",
+  "Argument check failed: %s": "Verificação de argumento falhou: %s",
+  "Implications failed:": "Implicações falharam:",
+  "Not enough arguments following: %s": "Argumentos insuficientes a seguir: %s",
+  "Invalid JSON config file: %s": "Arquivo JSON de configuração inválido: %s",
+  "Path to JSON config file": "Caminho para o arquivo JSON de configuração",
+  "Show help": "Exibe ajuda",
+  "Show version number": "Exibe a versão",
+  "Did you mean %s?": "Você quis dizer %s?",
+  "Arguments %s and %s are mutually exclusive" : "Argumentos %s e %s são mutualmente exclusivos",
+  "Positionals:": "Posicionais:",
+  "command": "comando"
+}
diff --git a/node_modules/yargs/locales/ru.json b/node_modules/yargs/locales/ru.json
new file mode 100644
index 0000000..cb7b88b
--- /dev/null
+++ b/node_modules/yargs/locales/ru.json
@@ -0,0 +1,39 @@
+{
+  "Commands:": "Команды:",
+  "Options:": "Опции:",
+  "Examples:": "Примеры:",
+  "boolean": "булевый тип",
+  "count": "подсчет",
+  "string": "строковой тип",
+  "number": "число",
+  "array": "массив",
+  "required": "необходимо",
+  "default:": "по умолчанию:",
+  "choices:": "возможности:",
+  "aliases:": "алиасы:",
+  "generated-value": "генерированное значение",
+  "Not enough non-option arguments: got %s, need at least %s": "Недостаточно неопционных аргументов: есть %s, нужно как минимум %s",
+  "Too many non-option arguments: got %s, maximum of %s": "Слишком много неопционных аргументов: есть %s, максимум допустимо %s",
+  "Missing argument value: %s": {
+    "one": "Не хватает значения аргумента: %s",
+    "other": "Не хватает значений аргументов: %s"
+  },
+  "Missing required argument: %s": {
+    "one": "Не хватает необходимого аргумента: %s",
+    "other": "Не хватает необходимых аргументов: %s"
+  },
+  "Unknown argument: %s": {
+    "one": "Неизвестный аргумент: %s",
+    "other": "Неизвестные аргументы: %s"
+  },
+  "Invalid values:": "Недействительные значения:",
+  "Argument: %s, Given: %s, Choices: %s": "Аргумент: %s, Данное значение: %s, Возможности: %s",
+  "Argument check failed: %s": "Проверка аргументов не удалась: %s",
+  "Implications failed:": "Данный аргумент требует следующий дополнительный аргумент:",
+  "Not enough arguments following: %s": "Недостаточно следующих аргументов: %s",
+  "Invalid JSON config file: %s": "Недействительный файл конфигурации JSON: %s",
+  "Path to JSON config file": "Путь к файлу конфигурации JSON",
+  "Show help": "Показать помощь",
+  "Show version number": "Показать номер версии",
+  "Did you mean %s?": "Вы имели в виду %s?"
+}
diff --git a/node_modules/yargs/locales/th.json b/node_modules/yargs/locales/th.json
new file mode 100644
index 0000000..3f08dcd
--- /dev/null
+++ b/node_modules/yargs/locales/th.json
@@ -0,0 +1,39 @@
+{
+  "Commands:": "คอมมาน",
+  "Options:": "ออฟชั่น",
+  "Examples:": "ตัวอย่าง",
+  "boolean": "บูลีน",
+  "count": "นับ",
+  "string": "สตริง",
+  "number": "ตัวเลข",
+  "array": "อาเรย์",
+  "required": "จำเป็น",
+  "default:": "ค่าเริ่มต้น",
+  "choices:": "ตัวเลือก",
+  "aliases:": "เอเลียส",
+  "generated-value": "ค่าที่ถูกสร้างขึ้น",
+  "Not enough non-option arguments: got %s, need at least %s": "ใส่อาร์กิวเมนต์ไม่ครบตามจำนวนที่กำหนด: ใส่ค่ามาจำนวน %s ค่า, แต่ต้องการอย่างน้อย %s ค่า",
+  "Too many non-option arguments: got %s, maximum of %s": "ใส่อาร์กิวเมนต์เกินจำนวนที่กำหนด: ใส่ค่ามาจำนวน %s ค่า, แต่ต้องการมากที่สุด %s ค่า",
+  "Missing argument value: %s": {
+    "one": "ค่าอาร์กิวเมนต์ที่ขาดไป: %s",
+    "other": "ค่าอาร์กิวเมนต์ที่ขาดไป: %s"
+  },
+  "Missing required argument: %s": {
+    "one": "อาร์กิวเมนต์จำเป็นที่ขาดไป: %s",
+    "other": "อาร์กิวเมนต์จำเป็นที่ขาดไป: %s"
+  },
+  "Unknown argument: %s": {
+    "one": "อาร์กิวเมนต์ที่ไม่รู้จัก: %s",
+    "other": "อาร์กิวเมนต์ที่ไม่รู้จัก: %s"
+  },
+  "Invalid values:": "ค่าไม่ถูกต้อง:",
+  "Argument: %s, Given: %s, Choices: %s": "อาร์กิวเมนต์: %s, ได้รับ: %s, ตัวเลือก: %s",
+  "Argument check failed: %s": "ตรวจสอบพบอาร์กิวเมนต์ที่ไม่ถูกต้อง: %s",
+  "Implications failed:": "Implications ไม่สำเร็จ:",
+  "Not enough arguments following: %s": "ใส่อาร์กิวเมนต์ไม่ครบ: %s",
+  "Invalid JSON config file: %s": "ไฟล์คอนฟิค JSON ไม่ถูกต้อง: %s",
+  "Path to JSON config file": "พาทไฟล์คอนฟิค JSON",
+  "Show help": "ขอความช่วยเหลือ",
+  "Show version number": "แสดงตัวเลขเวอร์ชั่น",
+  "Did you mean %s?": "คุณหมายถึง %s?"
+}
diff --git a/node_modules/yargs/locales/tr.json b/node_modules/yargs/locales/tr.json
new file mode 100644
index 0000000..9b06c52
--- /dev/null
+++ b/node_modules/yargs/locales/tr.json
@@ -0,0 +1,41 @@
+{
+  "Commands:": "Komutlar:",
+  "Options:": "Seçenekler:",
+  "Examples:": "Örnekler:",
+  "boolean": "boolean",
+  "count": "sayı",
+  "string": "string",
+  "number": "numara",
+  "array": "array",
+  "required": "zorunlu",
+  "default:": "varsayılan:",
+  "choices:": "seçimler:",
+  "aliases:": "takma adlar:",
+  "generated-value": "oluşturulan-değer",
+  "Not enough non-option arguments: got %s, need at least %s": "Seçenek dışı argümanlar yetersiz: %s bulundu, %s gerekli",
+  "Too many non-option arguments: got %s, maximum of %s": "Seçenek dışı argümanlar gereğinden fazla: %s bulundu, azami %s",
+  "Missing argument value: %s": {
+    "one": "Eksik argüman değeri: %s",
+    "other": "Eksik argüman değerleri: %s"
+  },
+  "Missing required argument: %s": {
+    "one": "Eksik zorunlu argüman: %s",
+    "other": "Eksik zorunlu argümanlar: %s"
+  },
+  "Unknown argument: %s": {
+    "one": "Bilinmeyen argüman: %s",
+    "other": "Bilinmeyen argümanlar: %s"
+  },
+  "Invalid values:": "Geçersiz değerler:",
+  "Argument: %s, Given: %s, Choices: %s": "Argüman: %s, Verilen: %s, Seçimler: %s",
+  "Argument check failed: %s": "Argüman kontrolü başarısız oldu: %s",
+  "Implications failed:": "Sonuçlar başarısız oldu:",
+  "Not enough arguments following: %s": "%s için yeterli argüman bulunamadı",
+  "Invalid JSON config file: %s": "Geçersiz JSON yapılandırma dosyası: %s",
+  "Path to JSON config file": "JSON yapılandırma dosya konumu",
+  "Show help": "Yardım detaylarını göster",
+  "Show version number": "Versiyon detaylarını göster",
+  "Did you mean %s?": "Bunu mu demek istediniz: %s?",
+  "Positionals:": "Sıralılar:",
+  "command": "komut"
+}
diff --git a/node_modules/yargs/locales/zh_CN.json b/node_modules/yargs/locales/zh_CN.json
new file mode 100644
index 0000000..03a3d94
--- /dev/null
+++ b/node_modules/yargs/locales/zh_CN.json
@@ -0,0 +1,41 @@
+{
+  "Commands:": "命令：",
+  "Options:": "选项：",
+  "Examples:": "示例：",
+  "boolean": "布尔",
+  "count": "计数",
+  "string": "字符串",
+  "number": "数字",
+  "array": "数组",
+  "required": "必需",
+  "default:": "默认值:",
+  "choices:": "可选值:",
+  "generated-value": "生成的值",
+  "Not enough non-option arguments: got %s, need at least %s": "缺少 non-option 参数：传入了 %s 个, 至少需要 %s 个",
+  "Too many non-option arguments: got %s, maximum of %s": "non-option 参数过多：传入了 %s 个, 最大允许 %s 个",
+  "Missing argument value: %s": {
+    "one": "没有给此选项指定值：%s",
+    "other": "没有给这些选项指定值：%s"
+  },
+  "Missing required argument: %s": {
+    "one": "缺少必须的选项：%s",
+    "other": "缺少这些必须的选项：%s"
+  },
+  "Unknown argument: %s": {
+    "one": "无法识别的选项：%s",
+    "other": "无法识别这些选项：%s"
+  },
+  "Invalid values:": "无效的选项值：",
+  "Argument: %s, Given: %s, Choices: %s": "选项名称: %s, 传入的值: %s, 可选的值：%s",
+  "Argument check failed: %s": "选项值验证失败：%s",
+  "Implications failed:": "缺少依赖的选项：",
+  "Not enough arguments following: %s": "没有提供足够的值给此选项：%s",
+  "Invalid JSON config file: %s": "无效的 JSON 配置文件：%s",
+  "Path to JSON config file": "JSON 配置文件的路径",
+  "Show help": "显示帮助信息",
+  "Show version number": "显示版本号",
+  "Did you mean %s?": "是指 %s?",
+  "Arguments %s and %s are mutually exclusive" : "选项 %s 和 %s 是互斥的",
+  "Positionals:": "位置：",
+  "command": "命令"
+}
diff --git a/node_modules/yargs/locales/zh_TW.json b/node_modules/yargs/locales/zh_TW.json
new file mode 100644
index 0000000..1249888
--- /dev/null
+++ b/node_modules/yargs/locales/zh_TW.json
@@ -0,0 +1,40 @@
+{
+  "Commands:": "命令：",
+  "Options:": "選項：",
+  "Examples:": "例：",
+  "boolean": "布林",
+  "count": "次數",
+  "string": "字串",
+  "number": "數字",
+  "array": "陣列",
+  "required": "必須",
+  "default:": "預設值:",
+  "choices:": "可選值:",
+  "aliases:": "別名:",
+  "generated-value": "生成的值",
+  "Not enough non-option arguments: got %s, need at least %s": "non-option 引數不足：只傳入了 %s 個, 至少要 %s 個",
+  "Too many non-option arguments: got %s, maximum of %s": "non-option 引數過多：傳入了 %s 個, 但最多 %s 個",
+  "Missing argument value: %s": {
+    "one": "此引數無指定值：%s",
+    "other": "這些引數無指定值：%s"
+  },
+  "Missing required argument: %s": {
+    "one": "缺少必須的引數：%s",
+    "other": "缺少這些必須的引數：%s"
+  },
+  "Unknown argument: %s": {
+    "one": "未知的引數：%s",
+    "other": "未知的這些引數：%s"
+  },
+  "Invalid values:": "無效的選項值：",
+  "Argument: %s, Given: %s, Choices: %s": "引數名稱: %s, 傳入的值: %s, 可選的值：%s",
+  "Argument check failed: %s": "引數驗證失敗：%s",
+  "Implications failed:": "缺少依賴的選項：",
+  "Not enough arguments following: %s": "沒有提供足夠的值給此引數：%s",
+  "Invalid JSON config file: %s": "無效的 JSON 設置文件：%s",
+  "Path to JSON config file": "JSON 設置文件的路徑",
+  "Show help": "顯示說明",
+  "Show version number": "顯示版本",
+  "Did you mean %s?": "是指 %s?",
+  "Arguments %s and %s are mutually exclusive" : "引數 %s 和 %s 是互斥的"
+}
diff --git a/node_modules/yargs/package.json b/node_modules/yargs/package.json
new file mode 100644
index 0000000..33394aa
--- /dev/null
+++ b/node_modules/yargs/package.json
@@ -0,0 +1,105 @@
+{
+  "_args": [
+    [
+      "yargs@11.1.0",
+      "/home/dstaesse/git/website"
+    ]
+  ],
+  "_development": true,
+  "_from": "yargs@11.1.0",
+  "_id": "yargs@11.1.0",
+  "_inBundle": false,
+  "_integrity": "sha512-NwW69J42EsCSanF8kyn5upxvjp5ds+t3+udGBeTbFnERA+lF541DDpMawzo4z6W/QrzNM18D+BPMiOBibnFV5A==",
+  "_location": "/yargs",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "version",
+    "registry": true,
+    "raw": "yargs@11.1.0",
+    "name": "yargs",
+    "escapedName": "yargs",
+    "rawSpec": "11.1.0",
+    "saveSpec": null,
+    "fetchSpec": "11.1.0"
+  },
+  "_requiredBy": [
+    "/postcss-cli"
+  ],
+  "_resolved": "https://registry.npmjs.org/yargs/-/yargs-11.1.0.tgz",
+  "_spec": "11.1.0",
+  "_where": "/home/dstaesse/git/website",
+  "bugs": {
+    "url": "https://github.com/yargs/yargs/issues"
+  },
+  "dependencies": {
+    "cliui": "^4.0.0",
+    "decamelize": "^1.1.1",
+    "find-up": "^2.1.0",
+    "get-caller-file": "^1.0.1",
+    "os-locale": "^2.0.0",
+    "require-directory": "^2.1.1",
+    "require-main-filename": "^1.0.1",
+    "set-blocking": "^2.0.0",
+    "string-width": "^2.0.0",
+    "which-module": "^2.0.0",
+    "y18n": "^3.2.1",
+    "yargs-parser": "^9.0.2"
+  },
+  "description": "yargs the modern, pirate-themed, successor to optimist.",
+  "devDependencies": {
+    "chai": "^4.1.2",
+    "chalk": "^1.1.3",
+    "coveralls": "^2.11.11",
+    "cpr": "^2.0.0",
+    "cross-spawn": "^6.0.4",
+    "es6-promise": "^4.0.2",
+    "hashish": "0.0.4",
+    "mocha": "^3.0.1",
+    "nyc": "^11.2.1",
+    "rimraf": "^2.5.0",
+    "standard": "^8.6.0",
+    "standard-version": "^4.2.0",
+    "which": "^1.2.9",
+    "yargs-test-extends": "^1.0.1"
+  },
+  "engine": {
+    "node": ">=4"
+  },
+  "files": [
+    "index.js",
+    "yargs.js",
+    "lib",
+    "locales",
+    "completion.sh.hbs",
+    "LICENSE"
+  ],
+  "homepage": "http://yargs.js.org/",
+  "keywords": [
+    "argument",
+    "args",
+    "option",
+    "parser",
+    "parsing",
+    "cli",
+    "command"
+  ],
+  "license": "MIT",
+  "main": "./index.js",
+  "name": "yargs",
+  "repository": {
+    "type": "git",
+    "url": "git+ssh://git@github.com/yargs/yargs.git"
+  },
+  "scripts": {
+    "coverage": "nyc report --reporter=text-lcov | coveralls",
+    "posttest": "standard",
+    "release": "standard-version",
+    "test": "nyc --cache mocha --require ./test/before.js --timeout=8000 --check-leaks"
+  },
+  "standard": {
+    "ignore": [
+      "**/example/**"
+    ]
+  },
+  "version": "11.1.0"
+}
diff --git a/node_modules/yargs/yargs.js b/node_modules/yargs/yargs.js
new file mode 100644
index 0000000..d9d34a4
--- /dev/null
+++ b/node_modules/yargs/yargs.js
@@ -0,0 +1,1185 @@
+'use strict'
+const argsert = require('./lib/argsert')
+const fs = require('fs')
+const Command = require('./lib/command')
+const Completion = require('./lib/completion')
+const Parser = require('yargs-parser')
+const path = require('path')
+const Usage = require('./lib/usage')
+const Validation = require('./lib/validation')
+const Y18n = require('y18n')
+const objFilter = require('./lib/obj-filter')
+const setBlocking = require('set-blocking')
+const applyExtends = require('./lib/apply-extends')
+const YError = require('./lib/yerror')
+
+exports = module.exports = Yargs
+function Yargs (processArgs, cwd, parentRequire) {
+  processArgs = processArgs || [] // handle calling yargs().
+
+  const self = {}
+  let command = null
+  let completion = null
+  let groups = {}
+  let output = ''
+  let preservedGroups = {}
+  let usage = null
+  let validation = null
+
+  const y18n = Y18n({
+    directory: path.resolve(__dirname, './locales'),
+    updateFiles: false
+  })
+
+  if (!cwd) cwd = process.cwd()
+
+  self.$0 = process.argv
+    .slice(0, 2)
+    .map((x, i) => {
+      // ignore the node bin, specify this in your
+      // bin file with #!/usr/bin/env node
+      if (i === 0 && /\b(node|iojs)(\.exe)?$/.test(x)) return
+      const b = rebase(cwd, x)
+      return x.match(/^(\/|([a-zA-Z]:)?\\)/) && b.length < x.length ? b : x
+    })
+    .join(' ').trim()
+
+  if (process.env._ !== undefined && process.argv[1] === process.env._) {
+    self.$0 = process.env._.replace(
+      `${path.dirname(process.execPath)}/`, ''
+    )
+  }
+
+  // use context object to keep track of resets, subcommand execution, etc
+  // submodules should modify and check the state of context as necessary
+  const context = { resets: -1, commands: [], fullCommands: [], files: [] }
+  self.getContext = () => context
+
+  // puts yargs back into an initial state. any keys
+  // that have been set to "global" will not be reset
+  // by this action.
+  let options
+  self.resetOptions = self.reset = function resetOptions (aliases) {
+    context.resets++
+    aliases = aliases || {}
+    options = options || {}
+    // put yargs back into an initial state, this
+    // logic is used to build a nested command
+    // hierarchy.
+    const tmpOptions = {}
+    tmpOptions.local = options.local ? options.local : []
+    tmpOptions.configObjects = options.configObjects ? options.configObjects : []
+
+    // if a key has been explicitly set as local,
+    // we should reset it before passing options to command.
+    const localLookup = {}
+    tmpOptions.local.forEach((l) => {
+      localLookup[l] = true
+      ;(aliases[l] || []).forEach((a) => {
+        localLookup[a] = true
+      })
+    })
+
+    // preserve all groups not set to local.
+    preservedGroups = Object.keys(groups).reduce((acc, groupName) => {
+      const keys = groups[groupName].filter(key => !(key in localLookup))
+      if (keys.length > 0) {
+        acc[groupName] = keys
+      }
+      return acc
+    }, {})
+    // groups can now be reset
+    groups = {}
+
+    const arrayOptions = [
+      'array', 'boolean', 'string', 'skipValidation',
+      'count', 'normalize', 'number',
+      'hiddenOptions'
+    ]
+
+    const objectOptions = [
+      'narg', 'key', 'alias', 'default', 'defaultDescription',
+      'config', 'choices', 'demandedOptions', 'demandedCommands', 'coerce'
+    ]
+
+    arrayOptions.forEach((k) => {
+      tmpOptions[k] = (options[k] || []).filter(k => !localLookup[k])
+    })
+
+    objectOptions.forEach((k) => {
+      tmpOptions[k] = objFilter(options[k], (k, v) => !localLookup[k])
+    })
+
+    tmpOptions.envPrefix = options.envPrefix
+    options = tmpOptions
+
+    // if this is the first time being executed, create
+    // instances of all our helpers -- otherwise just reset.
+    usage = usage ? usage.reset(localLookup) : Usage(self, y18n)
+    validation = validation ? validation.reset(localLookup) : Validation(self, usage, y18n)
+    command = command ? command.reset() : Command(self, usage, validation)
+    if (!completion) completion = Completion(self, usage, command)
+
+    completionCommand = null
+    output = ''
+    exitError = null
+    hasOutput = false
+    self.parsed = false
+
+    return self
+  }
+  self.resetOptions()
+
+  // temporary hack: allow "freezing" of reset-able state for parse(msg, cb)
+  let frozen
+  function freeze () {
+    frozen = {}
+    frozen.options = options
+    frozen.configObjects = options.configObjects.slice(0)
+    frozen.exitProcess = exitProcess
+    frozen.groups = groups
+    usage.freeze()
+    validation.freeze()
+    command.freeze()
+    frozen.strict = strict
+    frozen.completionCommand = completionCommand
+    frozen.output = output
+    frozen.exitError = exitError
+    frozen.hasOutput = hasOutput
+    frozen.parsed = self.parsed
+  }
+  function unfreeze () {
+    options = frozen.options
+    options.configObjects = frozen.configObjects
+    exitProcess = frozen.exitProcess
+    groups = frozen.groups
+    output = frozen.output
+    exitError = frozen.exitError
+    hasOutput = frozen.hasOutput
+    self.parsed = frozen.parsed
+    usage.unfreeze()
+    validation.unfreeze()
+    command.unfreeze()
+    strict = frozen.strict
+    completionCommand = frozen.completionCommand
+    parseFn = null
+    parseContext = null
+    frozen = undefined
+  }
+
+  self.boolean = function (keys) {
+    argsert('<array|string>', [keys], arguments.length)
+    populateParserHintArray('boolean', keys)
+    return self
+  }
+
+  self.array = function (keys) {
+    argsert('<array|string>', [keys], arguments.length)
+    populateParserHintArray('array', keys)
+    return self
+  }
+
+  self.number = function (keys) {
+    argsert('<array|string>', [keys], arguments.length)
+    populateParserHintArray('number', keys)
+    return self
+  }
+
+  self.normalize = function (keys) {
+    argsert('<array|string>', [keys], arguments.length)
+    populateParserHintArray('normalize', keys)
+    return self
+  }
+
+  self.count = function (keys) {
+    argsert('<array|string>', [keys], arguments.length)
+    populateParserHintArray('count', keys)
+    return self
+  }
+
+  self.string = function (keys) {
+    argsert('<array|string>', [keys], arguments.length)
+    populateParserHintArray('string', keys)
+    return self
+  }
+
+  self.requiresArg = function (keys) {
+    argsert('<array|string>', [keys], arguments.length)
+    populateParserHintObject(self.nargs, false, 'narg', keys, 1)
+    return self
+  }
+
+  self.skipValidation = function (keys) {
+    argsert('<array|string>', [keys], arguments.length)
+    populateParserHintArray('skipValidation', keys)
+    return self
+  }
+
+  function populateParserHintArray (type, keys, value) {
+    keys = [].concat(keys)
+    keys.forEach((key) => {
+      options[type].push(key)
+    })
+  }
+
+  self.nargs = function (key, value) {
+    argsert('<string|object|array> [number]', [key, value], arguments.length)
+    populateParserHintObject(self.nargs, false, 'narg', key, value)
+    return self
+  }
+
+  self.choices = function (key, value) {
+    argsert('<object|string|array> [string|array]', [key, value], arguments.length)
+    populateParserHintObject(self.choices, true, 'choices', key, value)
+    return self
+  }
+
+  self.alias = function (key, value) {
+    argsert('<object|string|array> [string|array]', [key, value], arguments.length)
+    populateParserHintObject(self.alias, true, 'alias', key, value)
+    return self
+  }
+
+  // TODO: actually deprecate self.defaults.
+  self.default = self.defaults = function (key, value, defaultDescription) {
+    argsert('<object|string|array> [*] [string]', [key, value, defaultDescription], arguments.length)
+    if (defaultDescription) options.defaultDescription[key] = defaultDescription
+    if (typeof value === 'function') {
+      if (!options.defaultDescription[key]) options.defaultDescription[key] = usage.functionDescription(value)
+      value = value.call()
+    }
+    populateParserHintObject(self.default, false, 'default', key, value)
+    return self
+  }
+
+  self.describe = function (key, desc) {
+    argsert('<object|string|array> [string]', [key, desc], arguments.length)
+    populateParserHintObject(self.describe, false, 'key', key, true)
+    usage.describe(key, desc)
+    return self
+  }
+
+  self.demandOption = function (keys, msg) {
+    argsert('<object|string|array> [string]', [keys, msg], arguments.length)
+    populateParserHintObject(self.demandOption, false, 'demandedOptions', keys, msg)
+    return self
+  }
+
+  self.coerce = function (keys, value) {
+    argsert('<object|string|array> [function]', [keys, value], arguments.length)
+    populateParserHintObject(self.coerce, false, 'coerce', keys, value)
+    return self
+  }
+
+  function populateParserHintObject (builder, isArray, type, key, value) {
+    if (Array.isArray(key)) {
+      // an array of keys with one value ['x', 'y', 'z'], function parse () {}
+      const temp = {}
+      key.forEach((k) => {
+        temp[k] = value
+      })
+      builder(temp)
+    } else if (typeof key === 'object') {
+      // an object of key value pairs: {'x': parse () {}, 'y': parse() {}}
+      Object.keys(key).forEach((k) => {
+        builder(k, key[k])
+      })
+    } else {
+      // a single key value pair 'x', parse() {}
+      if (isArray) {
+        options[type][key] = (options[type][key] || []).concat(value)
+      } else {
+        options[type][key] = value
+      }
+    }
+  }
+
+  function deleteFromParserHintObject (optionKey) {
+    // delete from all parsing hints:
+    // boolean, array, key, alias, etc.
+    Object.keys(options).forEach((hintKey) => {
+      const hint = options[hintKey]
+      if (Array.isArray(hint)) {
+        if (~hint.indexOf(optionKey)) hint.splice(hint.indexOf(optionKey), 1)
+      } else if (typeof hint === 'object') {
+        delete hint[optionKey]
+      }
+    })
+    // now delete the description from usage.js.
+    delete usage.getDescriptions()[optionKey]
+  }
+
+  self.config = function config (key, msg, parseFn) {
+    argsert('[object|string] [string|function] [function]', [key, msg, parseFn], arguments.length)
+    // allow a config object to be provided directly.
+    if (typeof key === 'object') {
+      key = applyExtends(key, cwd)
+      options.configObjects = (options.configObjects || []).concat(key)
+      return self
+    }
+
+    // allow for a custom parsing function.
+    if (typeof msg === 'function') {
+      parseFn = msg
+      msg = null
+    }
+
+    key = key || 'config'
+    self.describe(key, msg || usage.deferY18nLookup('Path to JSON config file'))
+    ;(Array.isArray(key) ? key : [key]).forEach((k) => {
+      options.config[k] = parseFn || true
+    })
+
+    return self
+  }
+
+  self.example = function (cmd, description) {
+    argsert('<string> [string]', [cmd, description], arguments.length)
+    usage.example(cmd, description)
+    return self
+  }
+
+  self.command = function (cmd, description, builder, handler, middlewares) {
+    argsert('<string|array|object> [string|boolean] [function|object] [function] [array]', [cmd, description, builder, handler, middlewares], arguments.length)
+    command.addHandler(cmd, description, builder, handler, middlewares)
+    return self
+  }
+
+  self.commandDir = function (dir, opts) {
+    argsert('<string> [object]', [dir, opts], arguments.length)
+    const req = parentRequire || require
+    command.addDirectory(dir, self.getContext(), req, require('get-caller-file')(), opts)
+    return self
+  }
+
+  // TODO: deprecate self.demand in favor of
+  // .demandCommand() .demandOption().
+  self.demand = self.required = self.require = function demand (keys, max, msg) {
+    // you can optionally provide a 'max' key,
+    // which will raise an exception if too many '_'
+    // options are provided.
+    if (Array.isArray(max)) {
+      max.forEach((key) => {
+        self.demandOption(key, msg)
+      })
+      max = Infinity
+    } else if (typeof max !== 'number') {
+      msg = max
+      max = Infinity
+    }
+
+    if (typeof keys === 'number') {
+      self.demandCommand(keys, max, msg, msg)
+    } else if (Array.isArray(keys)) {
+      keys.forEach((key) => {
+        self.demandOption(key, msg)
+      })
+    } else {
+      if (typeof msg === 'string') {
+        self.demandOption(keys, msg)
+      } else if (msg === true || typeof msg === 'undefined') {
+        self.demandOption(keys)
+      }
+    }
+
+    return self
+  }
+
+  self.demandCommand = function demandCommand (min, max, minMsg, maxMsg) {
+    argsert('[number] [number|string] [string|null|undefined] [string|null|undefined]', [min, max, minMsg, maxMsg], arguments.length)
+
+    if (typeof min === 'undefined') min = 1
+
+    if (typeof max !== 'number') {
+      minMsg = max
+      max = Infinity
+    }
+
+    self.global('_', false)
+
+    options.demandedCommands._ = {
+      min,
+      max,
+      minMsg,
+      maxMsg
+    }
+
+    return self
+  }
+
+  self.getDemandedOptions = () => {
+    argsert([], 0)
+    return options.demandedOptions
+  }
+
+  self.getDemandedCommands = () => {
+    argsert([], 0)
+    return options.demandedCommands
+  }
+
+  self.implies = function (key, value) {
+    argsert('<string|object> [number|string|array]', [key, value], arguments.length)
+    validation.implies(key, value)
+    return self
+  }
+
+  self.conflicts = function (key1, key2) {
+    argsert('<string|object> [string|array]', [key1, key2], arguments.length)
+    validation.conflicts(key1, key2)
+    return self
+  }
+
+  self.usage = function (msg, description, builder, handler) {
+    argsert('<string|null|undefined> [string|boolean] [function|object] [function]', [msg, description, builder, handler], arguments.length)
+
+    if (description !== undefined) {
+      // .usage() can be used as an alias for defining
+      // a default command.
+      if ((msg || '').match(/^\$0( |$)/)) {
+        return self.command(msg, description, builder, handler)
+      } else {
+        throw new YError('.usage() description must start with $0 if being used as alias for .command()')
+      }
+    } else {
+      usage.usage(msg)
+      return self
+    }
+  }
+
+  self.epilogue = self.epilog = function (msg) {
+    argsert('<string>', [msg], arguments.length)
+    usage.epilog(msg)
+    return self
+  }
+
+  self.fail = function (f) {
+    argsert('<function>', [f], arguments.length)
+    usage.failFn(f)
+    return self
+  }
+
+  self.check = function (f, _global) {
+    argsert('<function> [boolean]', [f, _global], arguments.length)
+    validation.check(f, _global !== false)
+    return self
+  }
+
+  self.global = function global (globals, global) {
+    argsert('<string|array> [boolean]', [globals, global], arguments.length)
+    globals = [].concat(globals)
+    if (global !== false) {
+      options.local = options.local.filter(l => globals.indexOf(l) === -1)
+    } else {
+      globals.forEach((g) => {
+        if (options.local.indexOf(g) === -1) options.local.push(g)
+      })
+    }
+    return self
+  }
+
+  self.pkgConf = function pkgConf (key, rootPath) {
+    argsert('<string> [string]', [key, rootPath], arguments.length)
+    let conf = null
+    // prefer cwd to require-main-filename in this method
+    // since we're looking for e.g. "nyc" config in nyc consumer
+    // rather than "yargs" config in nyc (where nyc is the main filename)
+    const obj = pkgUp(rootPath || cwd)
+
+    // If an object exists in the key, add it to options.configObjects
+    if (obj[key] && typeof obj[key] === 'object') {
+      conf = applyExtends(obj[key], rootPath || cwd)
+      options.configObjects = (options.configObjects || []).concat(conf)
+    }
+
+    return self
+  }
+
+  const pkgs = {}
+  function pkgUp (rootPath) {
+    const npath = rootPath || '*'
+    if (pkgs[npath]) return pkgs[npath]
+    const findUp = require('find-up')
+
+    let obj = {}
+    try {
+      let startDir = rootPath || require('require-main-filename')(parentRequire || require)
+
+      // When called in an environment that lacks require.main.filename, such as a jest test runner,
+      // startDir is already process.cwd(), and should not be shortened.
+      // Whether or not it is _actually_ a directory (e.g., extensionless bin) is irrelevant, find-up handles it.
+      if (!rootPath && path.extname(startDir)) {
+        startDir = path.dirname(startDir)
+      }
+
+      const pkgJsonPath = findUp.sync('package.json', {
+        cwd: startDir
+      })
+      obj = JSON.parse(fs.readFileSync(pkgJsonPath))
+    } catch (noop) {}
+
+    pkgs[npath] = obj || {}
+    return pkgs[npath]
+  }
+
+  let parseFn = null
+  let parseContext = null
+  self.parse = function parse (args, shortCircuit, _parseFn) {
+    argsert('[string|array] [function|boolean|object] [function]', [args, shortCircuit, _parseFn], arguments.length)
+    if (typeof args === 'undefined') args = processArgs
+
+    // a context object can optionally be provided, this allows
+    // additional information to be passed to a command handler.
+    if (typeof shortCircuit === 'object') {
+      parseContext = shortCircuit
+      shortCircuit = _parseFn
+    }
+
+    // by providing a function as a second argument to
+    // parse you can capture output that would otherwise
+    // default to printing to stdout/stderr.
+    if (typeof shortCircuit === 'function') {
+      parseFn = shortCircuit
+      shortCircuit = null
+    }
+    // completion short-circuits the parsing process,
+    // skipping validation, etc.
+    if (!shortCircuit) processArgs = args
+
+    freeze()
+    if (parseFn) exitProcess = false
+
+    const parsed = self._parseArgs(args, shortCircuit)
+    if (parseFn) parseFn(exitError, parsed, output)
+    unfreeze()
+
+    return parsed
+  }
+
+  self._getParseContext = () => parseContext || {}
+
+  self._hasParseCallback = () => !!parseFn
+
+  self.option = self.options = function option (key, opt) {
+    argsert('<string|object> [object]', [key, opt], arguments.length)
+    if (typeof key === 'object') {
+      Object.keys(key).forEach((k) => {
+        self.options(k, key[k])
+      })
+    } else {
+      if (typeof opt !== 'object') {
+        opt = {}
+      }
+
+      options.key[key] = true // track manually set keys.
+
+      if (opt.alias) self.alias(key, opt.alias)
+
+      const demand = opt.demand || opt.required || opt.require
+
+      // deprecated, use 'demandOption' instead
+      if (demand) {
+        self.demand(key, demand)
+      }
+
+      if (opt.demandOption) {
+        self.demandOption(key, typeof opt.demandOption === 'string' ? opt.demandOption : undefined)
+      }
+
+      if ('conflicts' in opt) {
+        self.conflicts(key, opt.conflicts)
+      }
+
+      if ('default' in opt) {
+        self.default(key, opt.default)
+      }
+
+      if ('implies' in opt) {
+        self.implies(key, opt.implies)
+      }
+
+      if ('nargs' in opt) {
+        self.nargs(key, opt.nargs)
+      }
+
+      if (opt.config) {
+        self.config(key, opt.configParser)
+      }
+
+      if (opt.normalize) {
+        self.normalize(key)
+      }
+
+      if ('choices' in opt) {
+        self.choices(key, opt.choices)
+      }
+
+      if ('coerce' in opt) {
+        self.coerce(key, opt.coerce)
+      }
+
+      if ('group' in opt) {
+        self.group(key, opt.group)
+      }
+
+      if (opt.boolean || opt.type === 'boolean') {
+        self.boolean(key)
+        if (opt.alias) self.boolean(opt.alias)
+      }
+
+      if (opt.array || opt.type === 'array') {
+        self.array(key)
+        if (opt.alias) self.array(opt.alias)
+      }
+
+      if (opt.number || opt.type === 'number') {
+        self.number(key)
+        if (opt.alias) self.number(opt.alias)
+      }
+
+      if (opt.string || opt.type === 'string') {
+        self.string(key)
+        if (opt.alias) self.string(opt.alias)
+      }
+
+      if (opt.count || opt.type === 'count') {
+        self.count(key)
+      }
+
+      if (typeof opt.global === 'boolean') {
+        self.global(key, opt.global)
+      }
+
+      if (opt.defaultDescription) {
+        options.defaultDescription[key] = opt.defaultDescription
+      }
+
+      if (opt.skipValidation) {
+        self.skipValidation(key)
+      }
+
+      const desc = opt.describe || opt.description || opt.desc
+      self.describe(key, desc)
+      if (opt.hidden) {
+        self.hide(key)
+      }
+
+      if (opt.requiresArg) {
+        self.requiresArg(key)
+      }
+    }
+
+    return self
+  }
+  self.getOptions = () => options
+
+  self.positional = function (key, opts) {
+    argsert('<string> <object>', [key, opts], arguments.length)
+    if (context.resets === 0) {
+      throw new YError(".positional() can only be called in a command's builder function")
+    }
+
+    // .positional() only supports a subset of the configuration
+    // options availble to .option().
+    const supportedOpts = ['default', 'implies', 'normalize',
+      'choices', 'conflicts', 'coerce', 'type', 'describe',
+      'desc', 'description', 'alias']
+    opts = objFilter(opts, (k, v) => {
+      let accept = supportedOpts.indexOf(k) !== -1
+      // type can be one of string|number|boolean.
+      if (k === 'type' && ['string', 'number', 'boolean'].indexOf(v) === -1) accept = false
+      return accept
+    })
+
+    // copy over any settings that can be inferred from the command string.
+    const fullCommand = context.fullCommands[context.fullCommands.length - 1]
+    const parseOptions = fullCommand ? command.cmdToParseOptions(fullCommand) : {
+      array: [],
+      alias: {},
+      default: {},
+      demand: {}
+    }
+    Object.keys(parseOptions).forEach((pk) => {
+      if (Array.isArray(parseOptions[pk])) {
+        if (parseOptions[pk].indexOf(key) !== -1) opts[pk] = true
+      } else {
+        if (parseOptions[pk][key] && !(pk in opts)) opts[pk] = parseOptions[pk][key]
+      }
+    })
+    self.group(key, usage.getPositionalGroupName())
+    return self.option(key, opts)
+  }
+
+  self.group = function group (opts, groupName) {
+    argsert('<string|array> <string>', [opts, groupName], arguments.length)
+    const existing = preservedGroups[groupName] || groups[groupName]
+    if (preservedGroups[groupName]) {
+      // we now only need to track this group name in groups.
+      delete preservedGroups[groupName]
+    }
+
+    const seen = {}
+    groups[groupName] = (existing || []).concat(opts).filter((key) => {
+      if (seen[key]) return false
+      return (seen[key] = true)
+    })
+    return self
+  }
+  // combine explicit and preserved groups. explicit groups should be first
+  self.getGroups = () => Object.assign({}, groups, preservedGroups)
+
+  // as long as options.envPrefix is not undefined,
+  // parser will apply env vars matching prefix to argv
+  self.env = function (prefix) {
+    argsert('[string|boolean]', [prefix], arguments.length)
+    if (prefix === false) options.envPrefix = undefined
+    else options.envPrefix = prefix || ''
+    return self
+  }
+
+  self.wrap = function (cols) {
+    argsert('<number|null|undefined>', [cols], arguments.length)
+    usage.wrap(cols)
+    return self
+  }
+
+  let strict = false
+  self.strict = function (enabled) {
+    argsert('[boolean]', [enabled], arguments.length)
+    strict = enabled !== false
+    return self
+  }
+  self.getStrict = () => strict
+
+  self.showHelp = function (level) {
+    argsert('[string|function]', [level], arguments.length)
+    if (!self.parsed) self._parseArgs(processArgs) // run parser, if it has not already been executed.
+    if (command.hasDefaultCommand()) {
+      context.resets++ // override the restriction on top-level positoinals.
+      command.runDefaultBuilderOn(self, true)
+    }
+    usage.showHelp(level)
+    return self
+  }
+
+  let versionOpt = null
+  self.version = function version (opt, msg, ver) {
+    const defaultVersionOpt = 'version'
+    argsert('[boolean|string] [string] [string]', [opt, msg, ver], arguments.length)
+
+    // nuke the key previously configured
+    // to return version #.
+    if (versionOpt) {
+      deleteFromParserHintObject(versionOpt)
+      usage.version(undefined)
+      versionOpt = null
+    }
+
+    if (arguments.length === 0) {
+      ver = guessVersion()
+      opt = defaultVersionOpt
+    } else if (arguments.length === 1) {
+      if (opt === false) { // disable default 'version' key.
+        return self
+      }
+      ver = opt
+      opt = defaultVersionOpt
+    } else if (arguments.length === 2) {
+      ver = msg
+      msg = null
+    }
+
+    versionOpt = typeof opt === 'string' ? opt : defaultVersionOpt
+    msg = msg || usage.deferY18nLookup('Show version number')
+
+    usage.version(ver || undefined)
+    self.boolean(versionOpt)
+    self.describe(versionOpt, msg)
+    return self
+  }
+
+  function guessVersion () {
+    const obj = pkgUp()
+
+    return obj.version || 'unknown'
+  }
+
+  let helpOpt = null
+  self.addHelpOpt = self.help = function addHelpOpt (opt, msg) {
+    const defaultHelpOpt = 'help'
+    argsert('[string|boolean] [string]', [opt, msg], arguments.length)
+
+    // nuke the key previously configured
+    // to return help.
+    if (helpOpt) {
+      deleteFromParserHintObject(helpOpt)
+      helpOpt = null
+    }
+
+    if (arguments.length === 1) {
+      if (opt === false) return self
+    }
+
+    // use arguments, fallback to defaults for opt and msg
+    helpOpt = typeof opt === 'string' ? opt : defaultHelpOpt
+    self.boolean(helpOpt)
+    self.describe(helpOpt, msg || usage.deferY18nLookup('Show help'))
+    return self
+  }
+
+  const defaultShowHiddenOpt = 'show-hidden'
+  options.showHiddenOpt = defaultShowHiddenOpt
+  self.addShowHiddenOpt = self.showHidden = function addShowHiddenOpt (opt, msg) {
+    argsert('[string|boolean] [string]', [opt, msg], arguments.length)
+
+    if (arguments.length === 1) {
+      if (opt === false) return self
+    }
+
+    const showHiddenOpt = typeof opt === 'string' ? opt : defaultShowHiddenOpt
+    self.boolean(showHiddenOpt)
+    self.describe(showHiddenOpt, msg || usage.deferY18nLookup('Show hidden options'))
+    options.showHiddenOpt = showHiddenOpt
+    return self
+  }
+
+  self.hide = function hide (key) {
+    argsert('<string|object>', [key], arguments.length)
+    options.hiddenOptions.push(key)
+    return self
+  }
+
+  self.showHelpOnFail = function showHelpOnFail (enabled, message) {
+    argsert('[boolean|string] [string]', [enabled, message], arguments.length)
+    usage.showHelpOnFail(enabled, message)
+    return self
+  }
+
+  var exitProcess = true
+  self.exitProcess = function (enabled) {
+    argsert('[boolean]', [enabled], arguments.length)
+    if (typeof enabled !== 'boolean') {
+      enabled = true
+    }
+    exitProcess = enabled
+    return self
+  }
+  self.getExitProcess = () => exitProcess
+
+  var completionCommand = null
+  self.completion = function (cmd, desc, fn) {
+    argsert('[string] [string|boolean|function] [function]', [cmd, desc, fn], arguments.length)
+
+    // a function to execute when generating
+    // completions can be provided as the second
+    // or third argument to completion.
+    if (typeof desc === 'function') {
+      fn = desc
+      desc = null
+    }
+
+    // register the completion command.
+    completionCommand = cmd || 'completion'
+    if (!desc && desc !== false) {
+      desc = 'generate bash completion script'
+    }
+    self.command(completionCommand, desc)
+
+    // a function can be provided
+    if (fn) completion.registerFunction(fn)
+
+    return self
+  }
+
+  self.showCompletionScript = function ($0) {
+    argsert('[string]', [$0], arguments.length)
+    $0 = $0 || self.$0
+    _logger.log(completion.generateCompletionScript($0, completionCommand))
+    return self
+  }
+
+  self.getCompletion = function (args, done) {
+    argsert('<array> <function>', [args, done], arguments.length)
+    completion.getCompletion(args, done)
+  }
+
+  self.locale = function (locale) {
+    argsert('[string]', [locale], arguments.length)
+    if (arguments.length === 0) {
+      guessLocale()
+      return y18n.getLocale()
+    }
+    detectLocale = false
+    y18n.setLocale(locale)
+    return self
+  }
+
+  self.updateStrings = self.updateLocale = function (obj) {
+    argsert('<object>', [obj], arguments.length)
+    detectLocale = false
+    y18n.updateLocale(obj)
+    return self
+  }
+
+  let detectLocale = true
+  self.detectLocale = function (detect) {
+    argsert('<boolean>', [detect], arguments.length)
+    detectLocale = detect
+    return self
+  }
+  self.getDetectLocale = () => detectLocale
+
+  var hasOutput = false
+  var exitError = null
+  // maybe exit, always capture
+  // context about why we wanted to exit.
+  self.exit = (code, err) => {
+    hasOutput = true
+    exitError = err
+    if (exitProcess) process.exit(code)
+  }
+
+  // we use a custom logger that buffers output,
+  // so that we can print to non-CLIs, e.g., chat-bots.
+  const _logger = {
+    log () {
+      const args = []
+      for (let i = 0; i < arguments.length; i++) args.push(arguments[i])
+      if (!self._hasParseCallback()) console.log.apply(console, args)
+      hasOutput = true
+      if (output.length) output += '\n'
+      output += args.join(' ')
+    },
+    error () {
+      const args = []
+      for (let i = 0; i < arguments.length; i++) args.push(arguments[i])
+      if (!self._hasParseCallback()) console.error.apply(console, args)
+      hasOutput = true
+      if (output.length) output += '\n'
+      output += args.join(' ')
+    }
+  }
+  self._getLoggerInstance = () => _logger
+  // has yargs output an error our help
+  // message in the current execution context.
+  self._hasOutput = () => hasOutput
+
+  self._setHasOutput = () => {
+    hasOutput = true
+  }
+
+  let recommendCommands
+  self.recommendCommands = function (recommend) {
+    argsert('[boolean]', [recommend], arguments.length)
+    recommendCommands = typeof recommend === 'boolean' ? recommend : true
+    return self
+  }
+
+  self.getUsageInstance = () => usage
+
+  self.getValidationInstance = () => validation
+
+  self.getCommandInstance = () => command
+
+  self.terminalWidth = () => {
+    argsert([], 0)
+    return typeof process.stdout.columns !== 'undefined' ? process.stdout.columns : null
+  }
+
+  Object.defineProperty(self, 'argv', {
+    get: () => self._parseArgs(processArgs),
+    enumerable: true
+  })
+
+  self._parseArgs = function parseArgs (args, shortCircuit, _skipValidation, commandIndex) {
+    let skipValidation = !!_skipValidation
+    args = args || processArgs
+
+    options.__ = y18n.__
+    options.configuration = pkgUp()['yargs'] || {}
+
+    const parsed = Parser.detailed(args, options)
+    let argv = parsed.argv
+    if (parseContext) argv = Object.assign({}, argv, parseContext)
+    const aliases = parsed.aliases
+
+    argv.$0 = self.$0
+    self.parsed = parsed
+
+    try {
+      guessLocale() // guess locale lazily, so that it can be turned off in chain.
+
+      // while building up the argv object, there
+      // are two passes through the parser. If completion
+      // is being performed short-circuit on the first pass.
+      if (shortCircuit) {
+        return argv
+      }
+
+      // if there's a handler associated with a
+      // command defer processing to it.
+      if (helpOpt) {
+        // consider any multi-char helpOpt alias as a valid help command
+        // unless all helpOpt aliases are single-char
+        // note that parsed.aliases is a normalized bidirectional map :)
+        const helpCmds = [helpOpt]
+          .concat(aliases[helpOpt] || [])
+          .filter(k => k.length > 1)
+        // check if help should trigger and strip it from _.
+        if (~helpCmds.indexOf(argv._[argv._.length - 1])) {
+          argv._.pop()
+          argv[helpOpt] = true
+        }
+      }
+      const handlerKeys = command.getCommands()
+      const skipDefaultCommand = argv[helpOpt] && (handlerKeys.length > 1 || handlerKeys[0] !== '$0')
+
+      if (argv._.length) {
+        if (handlerKeys.length) {
+          let firstUnknownCommand
+          for (let i = (commandIndex || 0), cmd; argv._[i] !== undefined; i++) {
+            cmd = String(argv._[i])
+            if (~handlerKeys.indexOf(cmd) && cmd !== completionCommand) {
+              setPlaceholderKeys(argv)
+              // commands are executed using a recursive algorithm that executes
+              // the deepest command first; we keep track of the position in the
+              // argv._ array that is currently being executed.
+              return command.runCommand(cmd, self, parsed, i + 1)
+            } else if (!firstUnknownCommand && cmd !== completionCommand) {
+              firstUnknownCommand = cmd
+              break
+            }
+          }
+
+          // run the default command, if defined
+          if (command.hasDefaultCommand() && !skipDefaultCommand) {
+            setPlaceholderKeys(argv)
+            return command.runCommand(null, self, parsed)
+          }
+
+          // recommend a command if recommendCommands() has
+          // been enabled, and no commands were found to execute
+          if (recommendCommands && firstUnknownCommand && !argv[helpOpt]) {
+            validation.recommendCommands(firstUnknownCommand, handlerKeys)
+          }
+        }
+
+        // generate a completion script for adding to ~/.bashrc.
+        if (completionCommand && ~argv._.indexOf(completionCommand) && !argv[completion.completionKey]) {
+          if (exitProcess) setBlocking(true)
+          self.showCompletionScript()
+          self.exit(0)
+        }
+      } else if (command.hasDefaultCommand() && !skipDefaultCommand) {
+        setPlaceholderKeys(argv)
+        return command.runCommand(null, self, parsed)
+      }
+
+      // we must run completions first, a user might
+      // want to complete the --help or --version option.
+      if (completion.completionKey in argv) {
+        if (exitProcess) setBlocking(true)
+
+        // we allow for asynchronous completions,
+        // e.g., loading in a list of commands from an API.
+        const completionArgs = args.slice(args.indexOf(`--${completion.completionKey}`) + 1)
+        completion.getCompletion(completionArgs, (completions) => {
+          ;(completions || []).forEach((completion) => {
+            _logger.log(completion)
+          })
+
+          self.exit(0)
+        })
+        return setPlaceholderKeys(argv)
+      }
+
+      // Handle 'help' and 'version' options
+      // if we haven't already output help!
+      if (!hasOutput) {
+        Object.keys(argv).forEach((key) => {
+          if (key === helpOpt && argv[key]) {
+            if (exitProcess) setBlocking(true)
+
+            skipValidation = true
+            self.showHelp('log')
+            self.exit(0)
+          } else if (key === versionOpt && argv[key]) {
+            if (exitProcess) setBlocking(true)
+
+            skipValidation = true
+            usage.showVersion()
+            self.exit(0)
+          }
+        })
+      }
+
+      // Check if any of the options to skip validation were provided
+      if (!skipValidation && options.skipValidation.length > 0) {
+        skipValidation = Object.keys(argv).some(key => options.skipValidation.indexOf(key) >= 0 && argv[key] === true)
+      }
+
+      // If the help or version options where used and exitProcess is false,
+      // or if explicitly skipped, we won't run validations.
+      if (!skipValidation) {
+        if (parsed.error) throw new YError(parsed.error.message)
+
+        // if we're executed via bash completion, don't
+        // bother with validation.
+        if (!argv[completion.completionKey]) {
+          self._runValidation(argv, aliases, {}, parsed.error)
+        }
+      }
+    } catch (err) {
+      if (err instanceof YError) usage.fail(err.message, err)
+      else throw err
+    }
+
+    return setPlaceholderKeys(argv)
+  }
+
+  self._runValidation = function runValidation (argv, aliases, positionalMap, parseErrors) {
+    if (parseErrors) throw new YError(parseErrors.message)
+    validation.nonOptionCount(argv)
+    validation.requiredArguments(argv)
+    if (strict) validation.unknownArguments(argv, aliases, positionalMap)
+    validation.customChecks(argv, aliases)
+    validation.limitedChoices(argv)
+    validation.implications(argv)
+    validation.conflicting(argv)
+  }
+
+  function guessLocale () {
+    if (!detectLocale) return
+
+    try {
+      const osLocale = require('os-locale')
+      self.locale(osLocale.sync({ spawn: false }))
+    } catch (err) {
+      // if we explode looking up locale just noop
+      // we'll keep using the default language 'en'.
+    }
+  }
+
+  function setPlaceholderKeys (argv) {
+    Object.keys(options.key).forEach((key) => {
+      // don't set placeholder keys for dot
+      // notation options 'foo.bar'.
+      if (~key.indexOf('.')) return
+      if (typeof argv[key] === 'undefined') argv[key] = undefined
+    })
+    return argv
+  }
+
+  // an app should almost always have --version and --help,
+  // if you *really* want to disable this use .help(false)/.version(false).
+  self.help()
+  self.version()
+
+  return self
+}
+
+// rebase an absolute path to a relative one with respect to a base directory
+// exported for tests
+exports.rebase = rebase
+function rebase (base, dir) {
+  return path.relative(base, dir)
+}