build: Add some required modules for node

22 files changed, 3547 insertions, 0 deletions

diff --git a/node_modules/argparse/lib/action.js b/node_modules/argparse/lib/action.js
new file mode 100644
index 0000000..1483c79
--- /dev/null
+++ b/node_modules/argparse/lib/action.js
@@ -0,0 +1,146 @@
+/**
+ * class Action
+ *
+ * Base class for all actions
+ * Do not call in your code, use this class only for inherits your own action
+ *
+ * Information about how to convert command line strings to Javascript objects.
+ * Action objects are used by an ArgumentParser to represent the information
+ * needed to parse a single argument from one or more strings from the command
+ * line. The keyword arguments to the Action constructor are also all attributes
+ * of Action instances.
+ *
+ * ##### Allowed keywords:
+ *
+ * - `store`
+ * - `storeConstant`
+ * - `storeTrue`
+ * - `storeFalse`
+ * - `append`
+ * - `appendConstant`
+ * - `count`
+ * - `help`
+ * - `version`
+ *
+ * Information about action options see [[Action.new]]
+ *
+ * See also [original guide](http://docs.python.org/dev/library/argparse.html#action)
+ *
+ **/
+
+'use strict';
+
+
+// Constants
+var c = require('./const');
+
+
+/**
+ * new Action(options)
+ *
+ * Base class for all actions. Used only for inherits
+ *
+ *
+ * ##### Options:
+ *
+ * - `optionStrings`  A list of command-line option strings for the action.
+ * - `dest`  Attribute to hold the created object(s)
+ * - `nargs`  The number of command-line arguments that should be consumed.
+ * By default, one argument will be consumed and a single value will be
+ * produced.
+ * - `constant`  Default value for an action with no value.
+ * - `defaultValue`  The value to be produced if the option is not specified.
+ * - `type`  Cast to 'string'|'int'|'float'|'complex'|function (string). If
+ * None, 'string'.
+ * - `choices`  The choices available.
+ * - `required`  True if the action must always be specified at the command
+ * line.
+ * - `help`  The help describing the argument.
+ * - `metavar`  The name to be used for the option's argument with the help
+ * string. If None, the 'dest' value will be used as the name.
+ *
+ * ##### nargs supported values:
+ *
+ * - `N` (an integer) consumes N arguments (and produces a list)
+ * - `?`  consumes zero or one arguments
+ * - `*` consumes zero or more arguments (and produces a list)
+ * - `+` consumes one or more arguments (and produces a list)
+ *
+ * Note: that the difference between the default and nargs=1 is that with the
+ * default, a single value will be produced, while with nargs=1, a list
+ * containing a single value will be produced.
+ **/
+var Action = module.exports = function Action(options) {
+  options = options || {};
+  this.optionStrings = options.optionStrings || [];
+  this.dest = options.dest;
+  this.nargs = typeof options.nargs !== 'undefined' ? options.nargs : null;
+  this.constant = typeof options.constant !== 'undefined' ? options.constant : null;
+  this.defaultValue = options.defaultValue;
+  this.type = typeof options.type !== 'undefined' ? options.type : null;
+  this.choices = typeof options.choices !== 'undefined' ? options.choices : null;
+  this.required = typeof options.required !== 'undefined' ? options.required : false;
+  this.help = typeof options.help !== 'undefined' ? options.help : null;
+  this.metavar = typeof options.metavar !== 'undefined' ? options.metavar : null;
+
+  if (!(this.optionStrings instanceof Array)) {
+    throw new Error('optionStrings should be an array');
+  }
+  if (typeof this.required !== 'undefined' && typeof this.required !== 'boolean') {
+    throw new Error('required should be a boolean');
+  }
+};
+
+/**
+ * Action#getName -> String
+ *
+ * Tells action name
+ **/
+Action.prototype.getName = function () {
+  if (this.optionStrings.length > 0) {
+    return this.optionStrings.join('/');
+  } else if (this.metavar !== null && this.metavar !== c.SUPPRESS) {
+    return this.metavar;
+  } else if (typeof this.dest !== 'undefined' && this.dest !== c.SUPPRESS) {
+    return this.dest;
+  }
+  return null;
+};
+
+/**
+ * Action#isOptional -> Boolean
+ *
+ * Return true if optional
+ **/
+Action.prototype.isOptional = function () {
+  return !this.isPositional();
+};
+
+/**
+ * Action#isPositional -> Boolean
+ *
+ * Return true if positional
+ **/
+Action.prototype.isPositional = function () {
+  return (this.optionStrings.length === 0);
+};
+
+/**
+ * Action#call(parser, namespace, values, optionString) -> Void
+ * - parser (ArgumentParser): current parser
+ * - namespace (Namespace): namespace for output data
+ * - values (Array): parsed values
+ * - optionString (Array): input option string(not parsed)
+ *
+ * Call the action. Should be implemented in inherited classes
+ *
+ * ##### Example
+ *
+ *      ActionCount.prototype.call = function (parser, namespace, values, optionString) {
+ *        namespace.set(this.dest, (namespace[this.dest] || 0) + 1);
+ *      };
+ *
+ **/
+Action.prototype.call = function () {
+  throw new Error('.call() not defined');// Not Implemented error
+};
diff --git a/node_modules/argparse/lib/action/append.js b/node_modules/argparse/lib/action/append.js
new file mode 100644
index 0000000..b5da0de
--- /dev/null
+++ b/node_modules/argparse/lib/action/append.js
@@ -0,0 +1,53 @@
+/*:nodoc:*
+ * class ActionAppend
+ *
+ * This action stores a list, and appends each argument value to the list.
+ * This is useful to allow an option to be specified multiple times.
+ * This class inherided from [[Action]]
+ *
+ **/
+
+'use strict';
+
+var util = require('util');
+
+var Action = require('../action');
+
+// Constants
+var c = require('../const');
+
+/*:nodoc:*
+ * new ActionAppend(options)
+ * - options (object): options hash see [[Action.new]]
+ *
+ * Note: options.nargs should be optional for constants
+ * and more then zero for other
+ **/
+var ActionAppend = module.exports = function ActionAppend(options) {
+  options = options || {};
+  if (this.nargs <= 0) {
+    throw new Error('nargs for append actions must be > 0; if arg ' +
+        'strings are not supplying the value to append, ' +
+        'the append const action may be more appropriate');
+  }
+  if (!!this.constant && this.nargs !== c.OPTIONAL) {
+    throw new Error('nargs must be OPTIONAL to supply const');
+  }
+  Action.call(this, options);
+};
+util.inherits(ActionAppend, Action);
+
+/*:nodoc:*
+ * ActionAppend#call(parser, namespace, values, optionString) -> Void
+ * - parser (ArgumentParser): current parser
+ * - namespace (Namespace): namespace for output data
+ * - values (Array): parsed values
+ * - optionString (Array): input option string(not parsed)
+ *
+ * Call the action. Save result in namespace object
+ **/
+ActionAppend.prototype.call = function (parser, namespace, values) {
+  var items = (namespace[this.dest] || []).slice();
+  items.push(values);
+  namespace.set(this.dest, items);
+};
diff --git a/node_modules/argparse/lib/action/append/constant.js b/node_modules/argparse/lib/action/append/constant.js
new file mode 100644
index 0000000..313f5d2
--- /dev/null
+++ b/node_modules/argparse/lib/action/append/constant.js
@@ -0,0 +1,47 @@
+/*:nodoc:*
+ * class ActionAppendConstant
+ *
+ * This stores a list, and appends the value specified by
+ * the const keyword argument to the list.
+ * (Note that the const keyword argument defaults to null.)
+ * The 'appendConst' action is typically useful when multiple
+ * arguments need to store constants to the same list.
+ *
+ * This class inherited from [[Action]]
+ **/
+
+'use strict';
+
+var util = require('util');
+
+var Action = require('../../action');
+
+/*:nodoc:*
+ * new ActionAppendConstant(options)
+ * - options (object): options hash see [[Action.new]]
+ *
+ **/
+var ActionAppendConstant = module.exports = function ActionAppendConstant(options) {
+  options = options || {};
+  options.nargs = 0;
+  if (typeof options.constant === 'undefined') {
+    throw new Error('constant option is required for appendAction');
+  }
+  Action.call(this, options);
+};
+util.inherits(ActionAppendConstant, Action);
+
+/*:nodoc:*
+ * ActionAppendConstant#call(parser, namespace, values, optionString) -> Void
+ * - parser (ArgumentParser): current parser
+ * - namespace (Namespace): namespace for output data
+ * - values (Array): parsed values
+ * - optionString (Array): input option string(not parsed)
+ *
+ * Call the action. Save result in namespace object
+ **/
+ActionAppendConstant.prototype.call = function (parser, namespace) {
+  var items = [].concat(namespace[this.dest] || []);
+  items.push(this.constant);
+  namespace.set(this.dest, items);
+};
diff --git a/node_modules/argparse/lib/action/count.js b/node_modules/argparse/lib/action/count.js
new file mode 100644
index 0000000..d6a5899
--- /dev/null
+++ b/node_modules/argparse/lib/action/count.js
@@ -0,0 +1,40 @@
+/*:nodoc:*
+ * class ActionCount
+ *
+ * This counts the number of times a keyword argument occurs.
+ * For example, this is useful for increasing verbosity levels
+ *
+ * This class inherided from [[Action]]
+ *
+ **/
+'use strict';
+
+var util = require('util');
+
+var Action = require('../action');
+
+/*:nodoc:*
+ * new ActionCount(options)
+ * - options (object): options hash see [[Action.new]]
+ *
+ **/
+var ActionCount = module.exports = function ActionCount(options) {
+  options = options || {};
+  options.nargs = 0;
+
+  Action.call(this, options);
+};
+util.inherits(ActionCount, Action);
+
+/*:nodoc:*
+ * ActionCount#call(parser, namespace, values, optionString) -> Void
+ * - parser (ArgumentParser): current parser
+ * - namespace (Namespace): namespace for output data
+ * - values (Array): parsed values
+ * - optionString (Array): input option string(not parsed)
+ *
+ * Call the action. Save result in namespace object
+ **/
+ActionCount.prototype.call = function (parser, namespace) {
+  namespace.set(this.dest, (namespace[this.dest] || 0) + 1);
+};
diff --git a/node_modules/argparse/lib/action/help.js b/node_modules/argparse/lib/action/help.js
new file mode 100644
index 0000000..b40e05a
--- /dev/null
+++ b/node_modules/argparse/lib/action/help.js
@@ -0,0 +1,47 @@
+/*:nodoc:*
+ * class ActionHelp
+ *
+ * Support action for printing help
+ * This class inherided from [[Action]]
+ **/
+'use strict';
+
+var util = require('util');
+
+var Action = require('../action');
+
+// Constants
+var c  = require('../const');
+
+/*:nodoc:*
+ * new ActionHelp(options)
+ * - options (object): options hash see [[Action.new]]
+ *
+ **/
+var ActionHelp = module.exports = function ActionHelp(options) {
+  options = options || {};
+  if (options.defaultValue !== null) {
+    options.defaultValue = options.defaultValue;
+  } else {
+    options.defaultValue = c.SUPPRESS;
+  }
+  options.dest = (options.dest !== null ? options.dest : c.SUPPRESS);
+  options.nargs = 0;
+  Action.call(this, options);
+
+};
+util.inherits(ActionHelp, Action);
+
+/*:nodoc:*
+ * ActionHelp#call(parser, namespace, values, optionString)
+ * - parser (ArgumentParser): current parser
+ * - namespace (Namespace): namespace for output data
+ * - values (Array): parsed values
+ * - optionString (Array): input option string(not parsed)
+ *
+ * Print help and exit
+ **/
+ActionHelp.prototype.call = function (parser) {
+  parser.printHelp();
+  parser.exit();
+};
diff --git a/node_modules/argparse/lib/action/store.js b/node_modules/argparse/lib/action/store.js
new file mode 100644
index 0000000..283b860
--- /dev/null
+++ b/node_modules/argparse/lib/action/store.js
@@ -0,0 +1,50 @@
+/*:nodoc:*
+ * class ActionStore
+ *
+ * This action just stores the argument’s value. This is the default action.
+ *
+ * This class inherited from [[Action]]
+ *
+ **/
+'use strict';
+
+var util = require('util');
+
+var Action = require('../action');
+
+// Constants
+var c = require('../const');
+
+
+/*:nodoc:*
+ * new ActionStore(options)
+ * - options (object): options hash see [[Action.new]]
+ *
+ **/
+var ActionStore = module.exports = function ActionStore(options) {
+  options = options || {};
+  if (this.nargs <= 0) {
+    throw new Error('nargs for store actions must be > 0; if you ' +
+        'have nothing to store, actions such as store ' +
+        'true or store const may be more appropriate');
+
+  }
+  if (typeof this.constant !== 'undefined' && this.nargs !== c.OPTIONAL) {
+    throw new Error('nargs must be OPTIONAL to supply const');
+  }
+  Action.call(this, options);
+};
+util.inherits(ActionStore, Action);
+
+/*:nodoc:*
+ * ActionStore#call(parser, namespace, values, optionString) -> Void
+ * - parser (ArgumentParser): current parser
+ * - namespace (Namespace): namespace for output data
+ * - values (Array): parsed values
+ * - optionString (Array): input option string(not parsed)
+ *
+ * Call the action. Save result in namespace object
+ **/
+ActionStore.prototype.call = function (parser, namespace, values) {
+  namespace.set(this.dest, values);
+};
diff --git a/node_modules/argparse/lib/action/store/constant.js b/node_modules/argparse/lib/action/store/constant.js
new file mode 100644
index 0000000..23caa89
--- /dev/null
+++ b/node_modules/argparse/lib/action/store/constant.js
@@ -0,0 +1,43 @@
+/*:nodoc:*
+ * class ActionStoreConstant
+ *
+ * This action stores the value specified by the const keyword argument.
+ * (Note that the const keyword argument defaults to the rather unhelpful null.)
+ * The 'store_const' action is most commonly used with optional
+ * arguments that specify some sort of flag.
+ *
+ * This class inherited from [[Action]]
+ **/
+'use strict';
+
+var util = require('util');
+
+var Action = require('../../action');
+
+/*:nodoc:*
+ * new ActionStoreConstant(options)
+ * - options (object): options hash see [[Action.new]]
+ *
+ **/
+var ActionStoreConstant = module.exports = function ActionStoreConstant(options) {
+  options = options || {};
+  options.nargs = 0;
+  if (typeof options.constant === 'undefined') {
+    throw new Error('constant option is required for storeAction');
+  }
+  Action.call(this, options);
+};
+util.inherits(ActionStoreConstant, Action);
+
+/*:nodoc:*
+ * ActionStoreConstant#call(parser, namespace, values, optionString) -> Void
+ * - parser (ArgumentParser): current parser
+ * - namespace (Namespace): namespace for output data
+ * - values (Array): parsed values
+ * - optionString (Array): input option string(not parsed)
+ *
+ * Call the action. Save result in namespace object
+ **/
+ActionStoreConstant.prototype.call = function (parser, namespace) {
+  namespace.set(this.dest, this.constant);
+};
diff --git a/node_modules/argparse/lib/action/store/false.js b/node_modules/argparse/lib/action/store/false.js
new file mode 100644
index 0000000..9924f46
--- /dev/null
+++ b/node_modules/argparse/lib/action/store/false.js
@@ -0,0 +1,27 @@
+/*:nodoc:*
+ * class ActionStoreFalse
+ *
+ * This action store the values False respectively.
+ * This is special cases of 'storeConst'
+ *
+ * This class inherited from [[Action]]
+ **/
+
+'use strict';
+
+var util = require('util');
+
+var ActionStoreConstant = require('./constant');
+
+/*:nodoc:*
+ * new ActionStoreFalse(options)
+ * - options (object): hash of options see [[Action.new]]
+ *
+ **/
+var ActionStoreFalse = module.exports = function ActionStoreFalse(options) {
+  options = options || {};
+  options.constant = false;
+  options.defaultValue = options.defaultValue !== null ? options.defaultValue : true;
+  ActionStoreConstant.call(this, options);
+};
+util.inherits(ActionStoreFalse, ActionStoreConstant);
diff --git a/node_modules/argparse/lib/action/store/true.js b/node_modules/argparse/lib/action/store/true.js
new file mode 100644
index 0000000..9e22f7d
--- /dev/null
+++ b/node_modules/argparse/lib/action/store/true.js
@@ -0,0 +1,26 @@
+/*:nodoc:*
+ * class ActionStoreTrue
+ *
+ * This action store the values True respectively.
+ * This isspecial cases of 'storeConst'
+ *
+ * This class inherited from [[Action]]
+ **/
+'use strict';
+
+var util = require('util');
+
+var ActionStoreConstant = require('./constant');
+
+/*:nodoc:*
+ * new ActionStoreTrue(options)
+ * - options (object): options hash see [[Action.new]]
+ *
+ **/
+var ActionStoreTrue = module.exports = function ActionStoreTrue(options) {
+  options = options || {};
+  options.constant = true;
+  options.defaultValue = options.defaultValue !== null ? options.defaultValue : false;
+  ActionStoreConstant.call(this, options);
+};
+util.inherits(ActionStoreTrue, ActionStoreConstant);
diff --git a/node_modules/argparse/lib/action/subparsers.js b/node_modules/argparse/lib/action/subparsers.js
new file mode 100644
index 0000000..99dfedd
--- /dev/null
+++ b/node_modules/argparse/lib/action/subparsers.js
@@ -0,0 +1,149 @@
+/** internal
+ * class ActionSubparsers
+ *
+ * Support the creation of such sub-commands with the addSubparsers()
+ *
+ * This class inherited from [[Action]]
+ **/
+'use strict';
+
+var util    = require('util');
+var format  = require('util').format;
+
+
+var Action = require('../action');
+
+// Constants
+var c = require('../const');
+
+// Errors
+var argumentErrorHelper = require('../argument/error');
+
+
+/*:nodoc:*
+ * new ChoicesPseudoAction(name, help)
+ *
+ * Create pseudo action for correct help text
+ *
+ **/
+function ChoicesPseudoAction(name, help) {
+  var options = {
+    optionStrings: [],
+    dest: name,
+    help: help
+  };
+
+  Action.call(this, options);
+}
+
+util.inherits(ChoicesPseudoAction, Action);
+
+/**
+ * new ActionSubparsers(options)
+ * - options (object): options hash see [[Action.new]]
+ *
+ **/
+function ActionSubparsers(options) {
+  options = options || {};
+  options.dest = options.dest || c.SUPPRESS;
+  options.nargs = c.PARSER;
+
+  this.debug = (options.debug === true);
+
+  this._progPrefix = options.prog;
+  this._parserClass = options.parserClass;
+  this._nameParserMap = {};
+  this._choicesActions = [];
+
+  options.choices = this._nameParserMap;
+  Action.call(this, options);
+}
+
+util.inherits(ActionSubparsers, Action);
+
+/*:nodoc:*
+ * ActionSubparsers#addParser(name, options) -> ArgumentParser
+ * - name (string): sub-command name
+ * - options (object): see [[ArgumentParser.new]]
+ *
+ *  Note:
+ *  addParser supports an additional aliases option,
+ *  which allows multiple strings to refer to the same subparser.
+ *  This example, like svn, aliases co as a shorthand for checkout
+ *
+ **/
+ActionSubparsers.prototype.addParser = function (name, options) {
+  var parser;
+
+  var self = this;
+
+  options = options || {};
+
+  options.debug = (this.debug === true);
+
+  // set program from the existing prefix
+  if (!options.prog) {
+    options.prog = this._progPrefix + ' ' + name;
+  }
+
+  var aliases = options.aliases || [];
+
+  // create a pseudo-action to hold the choice help
+  if (!!options.help || typeof options.help === 'string') {
+    var help = options.help;
+    delete options.help;
+
+    var choiceAction = new ChoicesPseudoAction(name, help);
+    this._choicesActions.push(choiceAction);
+  }
+
+  // create the parser and add it to the map
+  parser = new this._parserClass(options);
+  this._nameParserMap[name] = parser;
+
+  // make parser available under aliases also
+  aliases.forEach(function (alias) {
+    self._nameParserMap[alias] = parser;
+  });
+
+  return parser;
+};
+
+ActionSubparsers.prototype._getSubactions = function () {
+  return this._choicesActions;
+};
+
+/*:nodoc:*
+ * ActionSubparsers#call(parser, namespace, values, optionString) -> Void
+ * - parser (ArgumentParser): current parser
+ * - namespace (Namespace): namespace for output data
+ * - values (Array): parsed values
+ * - optionString (Array): input option string(not parsed)
+ *
+ * Call the action. Parse input aguments
+ **/
+ActionSubparsers.prototype.call = function (parser, namespace, values) {
+  var parserName = values[0];
+  var argStrings = values.slice(1);
+
+  // set the parser name if requested
+  if (this.dest !== c.SUPPRESS) {
+    namespace[this.dest] = parserName;
+  }
+
+  // select the parser
+  if (this._nameParserMap[parserName]) {
+    parser = this._nameParserMap[parserName];
+  } else {
+    throw argumentErrorHelper(format(
+      'Unknown parser "%s" (choices: [%s]).',
+        parserName,
+        Object.keys(this._nameParserMap).join(', ')
+    ));
+  }
+
+  // parse all the remaining options into the namespace
+  parser.parseArgs(argStrings, namespace);
+};
+
+module.exports = ActionSubparsers;
diff --git a/node_modules/argparse/lib/action/version.js b/node_modules/argparse/lib/action/version.js
new file mode 100644
index 0000000..8053328
--- /dev/null
+++ b/node_modules/argparse/lib/action/version.js
@@ -0,0 +1,47 @@
+/*:nodoc:*
+ * class ActionVersion
+ *
+ * Support action for printing program version
+ * This class inherited from [[Action]]
+ **/
+'use strict';
+
+var util = require('util');
+
+var Action = require('../action');
+
+//
+// Constants
+//
+var c = require('../const');
+
+/*:nodoc:*
+ * new ActionVersion(options)
+ * - options (object): options hash see [[Action.new]]
+ *
+ **/
+var ActionVersion = module.exports = function ActionVersion(options) {
+  options = options || {};
+  options.defaultValue = (options.defaultValue ? options.defaultValue : c.SUPPRESS);
+  options.dest = (options.dest || c.SUPPRESS);
+  options.nargs = 0;
+  this.version = options.version;
+  Action.call(this, options);
+};
+util.inherits(ActionVersion, Action);
+
+/*:nodoc:*
+ * ActionVersion#call(parser, namespace, values, optionString) -> Void
+ * - parser (ArgumentParser): current parser
+ * - namespace (Namespace): namespace for output data
+ * - values (Array): parsed values
+ * - optionString (Array): input option string(not parsed)
+ *
+ * Print version and exit
+ **/
+ActionVersion.prototype.call = function (parser) {
+  var version = this.version || parser.version;
+  var formatter = parser._getFormatter();
+  formatter.addText(version);
+  parser.exit(0, formatter.formatHelp());
+};
diff --git a/node_modules/argparse/lib/action_container.js b/node_modules/argparse/lib/action_container.js
new file mode 100644
index 0000000..6f1237b
--- /dev/null
+++ b/node_modules/argparse/lib/action_container.js
@@ -0,0 +1,482 @@
+/** internal
+ * class ActionContainer
+ *
+ * Action container. Parent for [[ArgumentParser]] and [[ArgumentGroup]]
+ **/
+
+'use strict';
+
+var format = require('util').format;
+
+// Constants
+var c = require('./const');
+
+var $$ = require('./utils');
+
+//Actions
+var ActionHelp = require('./action/help');
+var ActionAppend = require('./action/append');
+var ActionAppendConstant = require('./action/append/constant');
+var ActionCount = require('./action/count');
+var ActionStore = require('./action/store');
+var ActionStoreConstant = require('./action/store/constant');
+var ActionStoreTrue = require('./action/store/true');
+var ActionStoreFalse = require('./action/store/false');
+var ActionVersion = require('./action/version');
+var ActionSubparsers = require('./action/subparsers');
+
+// Errors
+var argumentErrorHelper = require('./argument/error');
+
+/**
+ * new ActionContainer(options)
+ *
+ * Action container. Parent for [[ArgumentParser]] and [[ArgumentGroup]]
+ *
+ * ##### Options:
+ *
+ * - `description` -- A description of what the program does
+ * - `prefixChars`  -- Characters that prefix optional arguments
+ * - `argumentDefault`  -- The default value for all arguments
+ * - `conflictHandler` -- The conflict handler to use for duplicate arguments
+ **/
+var ActionContainer = module.exports = function ActionContainer(options) {
+  options = options || {};
+
+  this.description = options.description;
+  this.argumentDefault = options.argumentDefault;
+  this.prefixChars = options.prefixChars || '';
+  this.conflictHandler = options.conflictHandler;
+
+  // set up registries
+  this._registries = {};
+
+  // register actions
+  this.register('action', null, ActionStore);
+  this.register('action', 'store', ActionStore);
+  this.register('action', 'storeConst', ActionStoreConstant);
+  this.register('action', 'storeTrue', ActionStoreTrue);
+  this.register('action', 'storeFalse', ActionStoreFalse);
+  this.register('action', 'append', ActionAppend);
+  this.register('action', 'appendConst', ActionAppendConstant);
+  this.register('action', 'count', ActionCount);
+  this.register('action', 'help', ActionHelp);
+  this.register('action', 'version', ActionVersion);
+  this.register('action', 'parsers', ActionSubparsers);
+
+  // raise an exception if the conflict handler is invalid
+  this._getHandler();
+
+  // action storage
+  this._actions = [];
+  this._optionStringActions = {};
+
+  // groups
+  this._actionGroups = [];
+  this._mutuallyExclusiveGroups = [];
+
+  // defaults storage
+  this._defaults = {};
+
+  // determines whether an "option" looks like a negative number
+  // -1, -1.5 -5e+4
+  this._regexpNegativeNumber = new RegExp('^[-]?[0-9]*\\.?[0-9]+([eE][-+]?[0-9]+)?$');
+
+  // whether or not there are any optionals that look like negative
+  // numbers -- uses a list so it can be shared and edited
+  this._hasNegativeNumberOptionals = [];
+};
+
+// Groups must be required, then ActionContainer already defined
+var ArgumentGroup = require('./argument/group');
+var MutuallyExclusiveGroup = require('./argument/exclusive');
+
+//
+// Registration methods
+//
+
+/**
+ * ActionContainer#register(registryName, value, object) -> Void
+ * - registryName (String) : object type action|type
+ * - value (string) : keyword
+ * - object (Object|Function) : handler
+ *
+ *  Register handlers
+ **/
+ActionContainer.prototype.register = function (registryName, value, object) {
+  this._registries[registryName] = this._registries[registryName] || {};
+  this._registries[registryName][value] = object;
+};
+
+ActionContainer.prototype._registryGet = function (registryName, value, defaultValue) {
+  if (arguments.length < 3) {
+    defaultValue = null;
+  }
+  return this._registries[registryName][value] || defaultValue;
+};
+
+//
+// Namespace default accessor methods
+//
+
+/**
+ * ActionContainer#setDefaults(options) -> Void
+ * - options (object):hash of options see [[Action.new]]
+ *
+ * Set defaults
+ **/
+ActionContainer.prototype.setDefaults = function (options) {
+  options = options || {};
+  for (var property in options) {
+    if ($$.has(options, property)) {
+      this._defaults[property] = options[property];
+    }
+  }
+
+  // if these defaults match any existing arguments, replace the previous
+  // default on the object with the new one
+  this._actions.forEach(function (action) {
+    if ($$.has(options, action.dest)) {
+      action.defaultValue = options[action.dest];
+    }
+  });
+};
+
+/**
+ * ActionContainer#getDefault(dest) -> Mixed
+ * - dest (string): action destination
+ *
+ * Return action default value
+ **/
+ActionContainer.prototype.getDefault = function (dest) {
+  var result = $$.has(this._defaults, dest) ? this._defaults[dest] : null;
+
+  this._actions.forEach(function (action) {
+    if (action.dest === dest && $$.has(action, 'defaultValue')) {
+      result = action.defaultValue;
+    }
+  });
+
+  return result;
+};
+//
+// Adding argument actions
+//
+
+/**
+ * ActionContainer#addArgument(args, options) -> Object
+ * - args (String|Array): argument key, or array of argument keys
+ * - options (Object): action objects see [[Action.new]]
+ *
+ * #### Examples
+ * - addArgument([ '-f', '--foo' ], { action: 'store', defaultValue: 1, ... })
+ * - addArgument([ 'bar' ], { action: 'store', nargs: 1, ... })
+ * - addArgument('--baz', { action: 'store', nargs: 1, ... })
+ **/
+ActionContainer.prototype.addArgument = function (args, options) {
+  args = args;
+  options = options || {};
+
+  if (typeof args === 'string') {
+    args = [ args ];
+  }
+  if (!Array.isArray(args)) {
+    throw new TypeError('addArgument first argument should be a string or an array');
+  }
+  if (typeof options !== 'object' || Array.isArray(options)) {
+    throw new TypeError('addArgument second argument should be a hash');
+  }
+
+  // if no positional args are supplied or only one is supplied and
+  // it doesn't look like an option string, parse a positional argument
+  if (!args || args.length === 1 && this.prefixChars.indexOf(args[0][0]) < 0) {
+    if (args && !!options.dest) {
+      throw new Error('dest supplied twice for positional argument');
+    }
+    options = this._getPositional(args, options);
+
+    // otherwise, we're adding an optional argument
+  } else {
+    options = this._getOptional(args, options);
+  }
+
+  // if no default was supplied, use the parser-level default
+  if (typeof options.defaultValue === 'undefined') {
+    var dest = options.dest;
+    if ($$.has(this._defaults, dest)) {
+      options.defaultValue = this._defaults[dest];
+    } else if (typeof this.argumentDefault !== 'undefined') {
+      options.defaultValue = this.argumentDefault;
+    }
+  }
+
+  // create the action object, and add it to the parser
+  var ActionClass = this._popActionClass(options);
+  if (typeof ActionClass !== 'function') {
+    throw new Error(format('Unknown action "%s".', ActionClass));
+  }
+  var action = new ActionClass(options);
+
+  // throw an error if the action type is not callable
+  var typeFunction = this._registryGet('type', action.type, action.type);
+  if (typeof typeFunction !== 'function') {
+    throw new Error(format('"%s" is not callable', typeFunction));
+  }
+
+  return this._addAction(action);
+};
+
+/**
+ * ActionContainer#addArgumentGroup(options) -> ArgumentGroup
+ * - options (Object): hash of options see [[ArgumentGroup.new]]
+ *
+ * Create new arguments groups
+ **/
+ActionContainer.prototype.addArgumentGroup = function (options) {
+  var group = new ArgumentGroup(this, options);
+  this._actionGroups.push(group);
+  return group;
+};
+
+/**
+ * ActionContainer#addMutuallyExclusiveGroup(options) -> ArgumentGroup
+ * - options (Object): {required: false}
+ *
+ * Create new mutual exclusive groups
+ **/
+ActionContainer.prototype.addMutuallyExclusiveGroup = function (options) {
+  var group = new MutuallyExclusiveGroup(this, options);
+  this._mutuallyExclusiveGroups.push(group);
+  return group;
+};
+
+ActionContainer.prototype._addAction = function (action) {
+  var self = this;
+
+  // resolve any conflicts
+  this._checkConflict(action);
+
+  // add to actions list
+  this._actions.push(action);
+  action.container = this;
+
+  // index the action by any option strings it has
+  action.optionStrings.forEach(function (optionString) {
+    self._optionStringActions[optionString] = action;
+  });
+
+  // set the flag if any option strings look like negative numbers
+  action.optionStrings.forEach(function (optionString) {
+    if (optionString.match(self._regexpNegativeNumber)) {
+      if (!self._hasNegativeNumberOptionals.some(Boolean)) {
+        self._hasNegativeNumberOptionals.push(true);
+      }
+    }
+  });
+
+  // return the created action
+  return action;
+};
+
+ActionContainer.prototype._removeAction = function (action) {
+  var actionIndex = this._actions.indexOf(action);
+  if (actionIndex >= 0) {
+    this._actions.splice(actionIndex, 1);
+  }
+};
+
+ActionContainer.prototype._addContainerActions = function (container) {
+  // collect groups by titles
+  var titleGroupMap = {};
+  this._actionGroups.forEach(function (group) {
+    if (titleGroupMap[group.title]) {
+      throw new Error(format('Cannot merge actions - two groups are named "%s".', group.title));
+    }
+    titleGroupMap[group.title] = group;
+  });
+
+  // map each action to its group
+  var groupMap = {};
+  function actionHash(action) {
+    // unique (hopefully?) string suitable as dictionary key
+    return action.getName();
+  }
+  container._actionGroups.forEach(function (group) {
+    // if a group with the title exists, use that, otherwise
+    // create a new group matching the container's group
+    if (!titleGroupMap[group.title]) {
+      titleGroupMap[group.title] = this.addArgumentGroup({
+        title: group.title,
+        description: group.description
+      });
+    }
+
+    // map the actions to their new group
+    group._groupActions.forEach(function (action) {
+      groupMap[actionHash(action)] = titleGroupMap[group.title];
+    });
+  }, this);
+
+  // add container's mutually exclusive groups
+  // NOTE: if add_mutually_exclusive_group ever gains title= and
+  // description= then this code will need to be expanded as above
+  var mutexGroup;
+  container._mutuallyExclusiveGroups.forEach(function (group) {
+    mutexGroup = this.addMutuallyExclusiveGroup({
+      required: group.required
+    });
+    // map the actions to their new mutex group
+    group._groupActions.forEach(function (action) {
+      groupMap[actionHash(action)] = mutexGroup;
+    });
+  }, this);  // forEach takes a 'this' argument
+
+  // add all actions to this container or their group
+  container._actions.forEach(function (action) {
+    var key = actionHash(action);
+    if (groupMap[key]) {
+      groupMap[key]._addAction(action);
+    } else {
+      this._addAction(action);
+    }
+  });
+};
+
+ActionContainer.prototype._getPositional = function (dest, options) {
+  if (Array.isArray(dest)) {
+    dest = dest[0];
+  }
+  // make sure required is not specified
+  if (options.required) {
+    throw new Error('"required" is an invalid argument for positionals.');
+  }
+
+  // mark positional arguments as required if at least one is
+  // always required
+  if (options.nargs !== c.OPTIONAL && options.nargs !== c.ZERO_OR_MORE) {
+    options.required = true;
+  }
+  if (options.nargs === c.ZERO_OR_MORE && typeof options.defaultValue === 'undefined') {
+    options.required = true;
+  }
+
+  // return the keyword arguments with no option strings
+  options.dest = dest;
+  options.optionStrings = [];
+  return options;
+};
+
+ActionContainer.prototype._getOptional = function (args, options) {
+  var prefixChars = this.prefixChars;
+  var optionStrings = [];
+  var optionStringsLong = [];
+
+  // determine short and long option strings
+  args.forEach(function (optionString) {
+    // error on strings that don't start with an appropriate prefix
+    if (prefixChars.indexOf(optionString[0]) < 0) {
+      throw new Error(format('Invalid option string "%s": must start with a "%s".',
+        optionString,
+        prefixChars
+      ));
+    }
+
+    // strings starting with two prefix characters are long options
+    optionStrings.push(optionString);
+    if (optionString.length > 1 && prefixChars.indexOf(optionString[1]) >= 0) {
+      optionStringsLong.push(optionString);
+    }
+  });
+
+  // infer dest, '--foo-bar' -> 'foo_bar' and '-x' -> 'x'
+  var dest = options.dest || null;
+  delete options.dest;
+
+  if (!dest) {
+    var optionStringDest = optionStringsLong.length ? optionStringsLong[0] : optionStrings[0];
+    dest = $$.trimChars(optionStringDest, this.prefixChars);
+
+    if (dest.length === 0) {
+      throw new Error(
+        format('dest= is required for options like "%s"', optionStrings.join(', '))
+      );
+    }
+    dest = dest.replace(/-/g, '_');
+  }
+
+  // return the updated keyword arguments
+  options.dest = dest;
+  options.optionStrings = optionStrings;
+
+  return options;
+};
+
+ActionContainer.prototype._popActionClass = function (options, defaultValue) {
+  defaultValue = defaultValue || null;
+
+  var action = (options.action || defaultValue);
+  delete options.action;
+
+  var actionClass = this._registryGet('action', action, action);
+  return actionClass;
+};
+
+ActionContainer.prototype._getHandler = function () {
+  var handlerString = this.conflictHandler;
+  var handlerFuncName = '_handleConflict' + $$.capitalize(handlerString);
+  var func = this[handlerFuncName];
+  if (typeof func === 'undefined') {
+    var msg = 'invalid conflict resolution value: ' + handlerString;
+    throw new Error(msg);
+  } else {
+    return func;
+  }
+};
+
+ActionContainer.prototype._checkConflict = function (action) {
+  var optionStringActions = this._optionStringActions;
+  var conflictOptionals = [];
+
+  // find all options that conflict with this option
+  // collect pairs, the string, and an existing action that it conflicts with
+  action.optionStrings.forEach(function (optionString) {
+    var conflOptional = optionStringActions[optionString];
+    if (typeof conflOptional !== 'undefined') {
+      conflictOptionals.push([ optionString, conflOptional ]);
+    }
+  });
+
+  if (conflictOptionals.length > 0) {
+    var conflictHandler = this._getHandler();
+    conflictHandler.call(this, action, conflictOptionals);
+  }
+};
+
+ActionContainer.prototype._handleConflictError = function (action, conflOptionals) {
+  var conflicts = conflOptionals.map(function (pair) { return pair[0]; });
+  conflicts = conflicts.join(', ');
+  throw argumentErrorHelper(
+    action,
+    format('Conflicting option string(s): %s', conflicts)
+  );
+};
+
+ActionContainer.prototype._handleConflictResolve = function (action, conflOptionals) {
+  // remove all conflicting options
+  var self = this;
+  conflOptionals.forEach(function (pair) {
+    var optionString = pair[0];
+    var conflictingAction = pair[1];
+    // remove the conflicting option string
+    var i = conflictingAction.optionStrings.indexOf(optionString);
+    if (i >= 0) {
+      conflictingAction.optionStrings.splice(i, 1);
+    }
+    delete self._optionStringActions[optionString];
+    // if the option now has no option string, remove it from the
+    // container holding it
+    if (conflictingAction.optionStrings.length === 0) {
+      conflictingAction.container._removeAction(conflictingAction);
+    }
+  });
+};
diff --git a/node_modules/argparse/lib/argparse.js b/node_modules/argparse/lib/argparse.js
new file mode 100644
index 0000000..f2a2c51
--- /dev/null
+++ b/node_modules/argparse/lib/argparse.js
@@ -0,0 +1,14 @@
+'use strict';
+
+module.exports.ArgumentParser = require('./argument_parser.js');
+module.exports.Namespace = require('./namespace');
+module.exports.Action = require('./action');
+module.exports.HelpFormatter = require('./help/formatter.js');
+module.exports.Const = require('./const.js');
+
+module.exports.ArgumentDefaultsHelpFormatter =
+  require('./help/added_formatters.js').ArgumentDefaultsHelpFormatter;
+module.exports.RawDescriptionHelpFormatter =
+  require('./help/added_formatters.js').RawDescriptionHelpFormatter;
+module.exports.RawTextHelpFormatter =
+  require('./help/added_formatters.js').RawTextHelpFormatter;
diff --git a/node_modules/argparse/lib/argument/error.js b/node_modules/argparse/lib/argument/error.js
new file mode 100644
index 0000000..c8a02a0
--- /dev/null
+++ b/node_modules/argparse/lib/argument/error.js
@@ -0,0 +1,50 @@
+'use strict';
+
+
+var format  = require('util').format;
+
+
+var ERR_CODE = 'ARGError';
+
+/*:nodoc:*
+ * argumentError(argument, message) -> TypeError
+ * - argument (Object): action with broken argument
+ * - message (String): error message
+ *
+ * Error format helper. An error from creating or using an argument
+ * (optional or positional). The string value of this exception
+ * is the message, augmented with information
+ * about the argument that caused it.
+ *
+ * #####Example
+ *
+ *      var argumentErrorHelper = require('./argument/error');
+ *      if (conflictOptionals.length > 0) {
+ *        throw argumentErrorHelper(
+ *          action,
+ *          format('Conflicting option string(s): %s', conflictOptionals.join(', '))
+ *        );
+ *      }
+ *
+ **/
+module.exports = function (argument, message) {
+  var argumentName = null;
+  var errMessage;
+  var err;
+
+  if (argument.getName) {
+    argumentName = argument.getName();
+  } else {
+    argumentName = '' + argument;
+  }
+
+  if (!argumentName) {
+    errMessage = message;
+  } else {
+    errMessage = format('argument "%s": %s', argumentName, message);
+  }
+
+  err = new TypeError(errMessage);
+  err.code = ERR_CODE;
+  return err;
+};
diff --git a/node_modules/argparse/lib/argument/exclusive.js b/node_modules/argparse/lib/argument/exclusive.js
new file mode 100644
index 0000000..8287e00
--- /dev/null
+++ b/node_modules/argparse/lib/argument/exclusive.js
@@ -0,0 +1,54 @@
+/** internal
+ * class MutuallyExclusiveGroup
+ *
+ * Group arguments.
+ * By default, ArgumentParser groups command-line arguments
+ * into “positional arguments” and “optional arguments”
+ * when displaying help messages. When there is a better
+ * conceptual grouping of arguments than this default one,
+ * appropriate groups can be created using the addArgumentGroup() method
+ *
+ * This class inherited from [[ArgumentContainer]]
+ **/
+'use strict';
+
+var util = require('util');
+
+var ArgumentGroup = require('./group');
+
+/**
+ * new MutuallyExclusiveGroup(container, options)
+ * - container (object): main container
+ * - options (object): options.required -> true/false
+ *
+ * `required` could be an argument itself, but making it a property of
+ * the options argument is more consistent with the JS adaptation of the Python)
+ **/
+var MutuallyExclusiveGroup = module.exports = function MutuallyExclusiveGroup(container, options) {
+  var required;
+  options = options || {};
+  required = options.required || false;
+  ArgumentGroup.call(this, container);
+  this.required = required;
+
+};
+util.inherits(MutuallyExclusiveGroup, ArgumentGroup);
+
+
+MutuallyExclusiveGroup.prototype._addAction = function (action) {
+  var msg;
+  if (action.required) {
+    msg = 'mutually exclusive arguments must be optional';
+    throw new Error(msg);
+  }
+  action = this._container._addAction(action);
+  this._groupActions.push(action);
+  return action;
+};
+
+
+MutuallyExclusiveGroup.prototype._removeAction = function (action) {
+  this._container._removeAction(action);
+  this._groupActions.remove(action);
+};
+
diff --git a/node_modules/argparse/lib/argument/group.js b/node_modules/argparse/lib/argument/group.js
new file mode 100644
index 0000000..58b271f
--- /dev/null
+++ b/node_modules/argparse/lib/argument/group.js
@@ -0,0 +1,75 @@
+/** internal
+ * class ArgumentGroup
+ *
+ * Group arguments.
+ * By default, ArgumentParser groups command-line arguments
+ * into “positional arguments” and “optional arguments”
+ * when displaying help messages. When there is a better
+ * conceptual grouping of arguments than this default one,
+ * appropriate groups can be created using the addArgumentGroup() method
+ *
+ * This class inherited from [[ArgumentContainer]]
+ **/
+'use strict';
+
+var util = require('util');
+
+var ActionContainer = require('../action_container');
+
+
+/**
+ * new ArgumentGroup(container, options)
+ * - container (object): main container
+ * - options (object): hash of group options
+ *
+ * #### options
+ * - **prefixChars**  group name prefix
+ * - **argumentDefault**  default argument value
+ * - **title**  group title
+ * - **description** group description
+ *
+ **/
+var ArgumentGroup = module.exports = function ArgumentGroup(container, options) {
+
+  options = options || {};
+
+  // add any missing keyword arguments by checking the container
+  options.conflictHandler = (options.conflictHandler || container.conflictHandler);
+  options.prefixChars = (options.prefixChars || container.prefixChars);
+  options.argumentDefault = (options.argumentDefault || container.argumentDefault);
+
+  ActionContainer.call(this, options);
+
+  // group attributes
+  this.title = options.title;
+  this._groupActions = [];
+
+  // share most attributes with the container
+  this._container = container;
+  this._registries = container._registries;
+  this._actions = container._actions;
+  this._optionStringActions = container._optionStringActions;
+  this._defaults = container._defaults;
+  this._hasNegativeNumberOptionals = container._hasNegativeNumberOptionals;
+  this._mutuallyExclusiveGroups = container._mutuallyExclusiveGroups;
+};
+util.inherits(ArgumentGroup, ActionContainer);
+
+
+ArgumentGroup.prototype._addAction = function (action) {
+  // Parent add action
+  action = ActionContainer.prototype._addAction.call(this, action);
+  this._groupActions.push(action);
+  return action;
+};
+
+
+ArgumentGroup.prototype._removeAction = function (action) {
+  // Parent remove action
+  ActionContainer.prototype._removeAction.call(this, action);
+  var actionIndex = this._groupActions.indexOf(action);
+  if (actionIndex >= 0) {
+    this._groupActions.splice(actionIndex, 1);
+  }
+};
+
diff --git a/node_modules/argparse/lib/argument_parser.js b/node_modules/argparse/lib/argument_parser.js
new file mode 100644
index 0000000..bd9a59a
--- /dev/null
+++ b/node_modules/argparse/lib/argument_parser.js
@@ -0,0 +1,1161 @@
+/**
+ * class ArgumentParser
+ *
+ * Object for parsing command line strings into js objects.
+ *
+ * Inherited from [[ActionContainer]]
+ **/
+'use strict';
+
+var util    = require('util');
+var format  = require('util').format;
+var Path    = require('path');
+var sprintf = require('sprintf-js').sprintf;
+
+// Constants
+var c = require('./const');
+
+var $$ = require('./utils');
+
+var ActionContainer = require('./action_container');
+
+// Errors
+var argumentErrorHelper = require('./argument/error');
+
+var HelpFormatter = require('./help/formatter');
+
+var Namespace = require('./namespace');
+
+
+/**
+ * new ArgumentParser(options)
+ *
+ * Create a new ArgumentParser object.
+ *
+ * ##### Options:
+ * - `prog`  The name of the program (default: Path.basename(process.argv[1]))
+ * - `usage`  A usage message (default: auto-generated from arguments)
+ * - `description`  A description of what the program does
+ * - `epilog`  Text following the argument descriptions
+ * - `parents`  Parsers whose arguments should be copied into this one
+ * - `formatterClass`  HelpFormatter class for printing help messages
+ * - `prefixChars`  Characters that prefix optional arguments
+ * - `fromfilePrefixChars` Characters that prefix files containing additional arguments
+ * - `argumentDefault`  The default value for all arguments
+ * - `addHelp`  Add a -h/-help option
+ * - `conflictHandler`  Specifies how to handle conflicting argument names
+ * - `debug`  Enable debug mode. Argument errors throw exception in
+ *   debug mode and process.exit in normal. Used for development and
+ *   testing (default: false)
+ *
+ * See also [original guide][1]
+ *
+ * [1]:http://docs.python.org/dev/library/argparse.html#argumentparser-objects
+ **/
+function ArgumentParser(options) {
+  if (!(this instanceof ArgumentParser)) {
+    return new ArgumentParser(options);
+  }
+  var self = this;
+  options = options || {};
+
+  options.description = (options.description || null);
+  options.argumentDefault = (options.argumentDefault || null);
+  options.prefixChars = (options.prefixChars || '-');
+  options.conflictHandler = (options.conflictHandler || 'error');
+  ActionContainer.call(this, options);
+
+  options.addHelp = typeof options.addHelp === 'undefined' || !!options.addHelp;
+  options.parents = options.parents || [];
+  // default program name
+  options.prog = (options.prog || Path.basename(process.argv[1]));
+  this.prog = options.prog;
+  this.usage = options.usage;
+  this.epilog = options.epilog;
+  this.version = options.version;
+
+  this.debug = (options.debug === true);
+
+  this.formatterClass = (options.formatterClass || HelpFormatter);
+  this.fromfilePrefixChars = options.fromfilePrefixChars || null;
+  this._positionals = this.addArgumentGroup({ title: 'Positional arguments' });
+  this._optionals = this.addArgumentGroup({ title: 'Optional arguments' });
+  this._subparsers = null;
+
+  // register types
+  function FUNCTION_IDENTITY(o) {
+    return o;
+  }
+  this.register('type', 'auto', FUNCTION_IDENTITY);
+  this.register('type', null, FUNCTION_IDENTITY);
+  this.register('type', 'int', function (x) {
+    var result = parseInt(x, 10);
+    if (isNaN(result)) {
+      throw new Error(x + ' is not a valid integer.');
+    }
+    return result;
+  });
+  this.register('type', 'float', function (x) {
+    var result = parseFloat(x);
+    if (isNaN(result)) {
+      throw new Error(x + ' is not a valid float.');
+    }
+    return result;
+  });
+  this.register('type', 'string', function (x) {
+    return '' + x;
+  });
+
+  // add help and version arguments if necessary
+  var defaultPrefix = (this.prefixChars.indexOf('-') > -1) ? '-' : this.prefixChars[0];
+  if (options.addHelp) {
+    this.addArgument(
+      [ defaultPrefix + 'h', defaultPrefix + defaultPrefix + 'help' ],
+      {
+        action: 'help',
+        defaultValue: c.SUPPRESS,
+        help: 'Show this help message and exit.'
+      }
+    );
+  }
+  if (typeof this.version !== 'undefined') {
+    this.addArgument(
+      [ defaultPrefix + 'v', defaultPrefix + defaultPrefix + 'version' ],
+      {
+        action: 'version',
+        version: this.version,
+        defaultValue: c.SUPPRESS,
+        help: "Show program's version number and exit."
+      }
+    );
+  }
+
+  // add parent arguments and defaults
+  options.parents.forEach(function (parent) {
+    self._addContainerActions(parent);
+    if (typeof parent._defaults !== 'undefined') {
+      for (var defaultKey in parent._defaults) {
+        if (parent._defaults.hasOwnProperty(defaultKey)) {
+          self._defaults[defaultKey] = parent._defaults[defaultKey];
+        }
+      }
+    }
+  });
+}
+
+util.inherits(ArgumentParser, ActionContainer);
+
+/**
+ * ArgumentParser#addSubparsers(options) -> [[ActionSubparsers]]
+ * - options (object): hash of options see [[ActionSubparsers.new]]
+ *
+ * See also [subcommands][1]
+ *
+ * [1]:http://docs.python.org/dev/library/argparse.html#sub-commands
+ **/
+ArgumentParser.prototype.addSubparsers = function (options) {
+  if (this._subparsers) {
+    this.error('Cannot have multiple subparser arguments.');
+  }
+
+  options = options || {};
+  options.debug = (this.debug === true);
+  options.optionStrings = [];
+  options.parserClass = (options.parserClass || ArgumentParser);
+
+
+  if (!!options.title || !!options.description) {
+
+    this._subparsers = this.addArgumentGroup({
+      title: (options.title || 'subcommands'),
+      description: options.description
+    });
+    delete options.title;
+    delete options.description;
+
+  } else {
+    this._subparsers = this._positionals;
+  }
+
+  // prog defaults to the usage message of this parser, skipping
+  // optional arguments and with no "usage:" prefix
+  if (!options.prog) {
+    var formatter = this._getFormatter();
+    var positionals = this._getPositionalActions();
+    var groups = this._mutuallyExclusiveGroups;
+    formatter.addUsage(this.usage, positionals, groups, '');
+    options.prog = formatter.formatHelp().trim();
+  }
+
+  // create the parsers action and add it to the positionals list
+  var ParsersClass = this._popActionClass(options, 'parsers');
+  var action = new ParsersClass(options);
+  this._subparsers._addAction(action);
+
+  // return the created parsers action
+  return action;
+};
+
+ArgumentParser.prototype._addAction = function (action) {
+  if (action.isOptional()) {
+    this._optionals._addAction(action);
+  } else {
+    this._positionals._addAction(action);
+  }
+  return action;
+};
+
+ArgumentParser.prototype._getOptionalActions = function () {
+  return this._actions.filter(function (action) {
+    return action.isOptional();
+  });
+};
+
+ArgumentParser.prototype._getPositionalActions = function () {
+  return this._actions.filter(function (action) {
+    return action.isPositional();
+  });
+};
+
+
+/**
+ * ArgumentParser#parseArgs(args, namespace) -> Namespace|Object
+ * - args (array): input elements
+ * - namespace (Namespace|Object): result object
+ *
+ * Parsed args and throws error if some arguments are not recognized
+ *
+ * See also [original guide][1]
+ *
+ * [1]:http://docs.python.org/dev/library/argparse.html#the-parse-args-method
+ **/
+ArgumentParser.prototype.parseArgs = function (args, namespace) {
+  var argv;
+  var result = this.parseKnownArgs(args, namespace);
+
+  args = result[0];
+  argv = result[1];
+  if (argv && argv.length > 0) {
+    this.error(
+      format('Unrecognized arguments: %s.', argv.join(' '))
+    );
+  }
+  return args;
+};
+
+/**
+ * ArgumentParser#parseKnownArgs(args, namespace) -> array
+ * - args (array): input options
+ * - namespace (Namespace|Object): result object
+ *
+ * Parse known arguments and return tuple of result object
+ * and unknown args
+ *
+ * See also [original guide][1]
+ *
+ * [1]:http://docs.python.org/dev/library/argparse.html#partial-parsing
+ **/
+ArgumentParser.prototype.parseKnownArgs = function (args, namespace) {
+  var self = this;
+
+  // args default to the system args
+  args = args || process.argv.slice(2);
+
+  // default Namespace built from parser defaults
+  namespace = namespace || new Namespace();
+
+  self._actions.forEach(function (action) {
+    if (action.dest !== c.SUPPRESS) {
+      if (!$$.has(namespace, action.dest)) {
+        if (action.defaultValue !== c.SUPPRESS) {
+          var defaultValue = action.defaultValue;
+          if (typeof action.defaultValue === 'string') {
+            defaultValue = self._getValue(action, defaultValue);
+          }
+          namespace[action.dest] = defaultValue;
+        }
+      }
+    }
+  });
+
+  Object.keys(self._defaults).forEach(function (dest) {
+    namespace[dest] = self._defaults[dest];
+  });
+
+  // parse the arguments and exit if there are any errors
+  try {
+    var res = this._parseKnownArgs(args, namespace);
+
+    namespace = res[0];
+    args = res[1];
+    if ($$.has(namespace, c._UNRECOGNIZED_ARGS_ATTR)) {
+      args = $$.arrayUnion(args, namespace[c._UNRECOGNIZED_ARGS_ATTR]);
+      delete namespace[c._UNRECOGNIZED_ARGS_ATTR];
+    }
+    return [ namespace, args ];
+  } catch (e) {
+    this.error(e);
+  }
+};
+
+ArgumentParser.prototype._parseKnownArgs = function (argStrings, namespace) {
+  var self = this;
+
+  var extras = [];
+
+  // replace arg strings that are file references
+  if (this.fromfilePrefixChars !== null) {
+    argStrings = this._readArgsFromFiles(argStrings);
+  }
+  // map all mutually exclusive arguments to the other arguments
+  // they can't occur with
+  // Python has 'conflicts = action_conflicts.setdefault(mutex_action, [])'
+  // though I can't conceive of a way in which an action could be a member
+  // of two different mutually exclusive groups.
+
+  function actionHash(action) {
+    // some sort of hashable key for this action
+    // action itself cannot be a key in actionConflicts
+    // I think getName() (join of optionStrings) is unique enough
+    return action.getName();
+  }
+
+  var conflicts, key;
+  var actionConflicts = {};
+
+  this._mutuallyExclusiveGroups.forEach(function (mutexGroup) {
+    mutexGroup._groupActions.forEach(function (mutexAction, i, groupActions) {
+      key = actionHash(mutexAction);
+      if (!$$.has(actionConflicts, key)) {
+        actionConflicts[key] = [];
+      }
+      conflicts = actionConflicts[key];
+      conflicts.push.apply(conflicts, groupActions.slice(0, i));
+      conflicts.push.apply(conflicts, groupActions.slice(i + 1));
+    });
+  });
+
+  // find all option indices, and determine the arg_string_pattern
+  // which has an 'O' if there is an option at an index,
+  // an 'A' if there is an argument, or a '-' if there is a '--'
+  var optionStringIndices = {};
+
+  var argStringPatternParts = [];
+
+  argStrings.forEach(function (argString, argStringIndex) {
+    if (argString === '--') {
+      argStringPatternParts.push('-');
+      while (argStringIndex < argStrings.length) {
+        argStringPatternParts.push('A');
+        argStringIndex++;
+      }
+    } else {
+      // otherwise, add the arg to the arg strings
+      // and note the index if it was an option
+      var pattern;
+      var optionTuple = self._parseOptional(argString);
+      if (!optionTuple) {
+        pattern = 'A';
+      } else {
+        optionStringIndices[argStringIndex] = optionTuple;
+        pattern = 'O';
+      }
+      argStringPatternParts.push(pattern);
+    }
+  });
+  var argStringsPattern = argStringPatternParts.join('');
+
+  var seenActions = [];
+  var seenNonDefaultActions = [];
+
+
+  function takeAction(action, argumentStrings, optionString) {
+    seenActions.push(action);
+    var argumentValues = self._getValues(action, argumentStrings);
+
+    // error if this argument is not allowed with other previously
+    // seen arguments, assuming that actions that use the default
+    // value don't really count as "present"
+    if (argumentValues !== action.defaultValue) {
+      seenNonDefaultActions.push(action);
+      if (actionConflicts[actionHash(action)]) {
+        actionConflicts[actionHash(action)].forEach(function (actionConflict) {
+          if (seenNonDefaultActions.indexOf(actionConflict) >= 0) {
+            throw argumentErrorHelper(
+              action,
+              format('Not allowed with argument "%s".', actionConflict.getName())
+            );
+          }
+        });
+      }
+    }
+
+    if (argumentValues !== c.SUPPRESS) {
+      action.call(self, namespace, argumentValues, optionString);
+    }
+  }
+
+  function consumeOptional(startIndex) {
+    // get the optional identified at this index
+    var optionTuple = optionStringIndices[startIndex];
+    var action = optionTuple[0];
+    var optionString = optionTuple[1];
+    var explicitArg = optionTuple[2];
+
+    // identify additional optionals in the same arg string
+    // (e.g. -xyz is the same as -x -y -z if no args are required)
+    var actionTuples = [];
+
+    var args, argCount, start, stop;
+
+    for (;;) {
+      if (!action) {
+        extras.push(argStrings[startIndex]);
+        return startIndex + 1;
+      }
+      if (explicitArg) {
+        argCount = self._matchArgument(action, 'A');
+
+        // if the action is a single-dash option and takes no
+        // arguments, try to parse more single-dash options out
+        // of the tail of the option string
+        var chars = self.prefixChars;
+        if (argCount === 0 && chars.indexOf(optionString[1]) < 0) {
+          actionTuples.push([ action, [], optionString ]);
+          optionString = optionString[0] + explicitArg[0];
+          var newExplicitArg = explicitArg.slice(1) || null;
+          var optionalsMap = self._optionStringActions;
+
+          if (Object.keys(optionalsMap).indexOf(optionString) >= 0) {
+            action = optionalsMap[optionString];
+            explicitArg = newExplicitArg;
+          } else {
+            throw argumentErrorHelper(action, sprintf('ignored explicit argument %r', explicitArg));
+          }
+        } else if (argCount === 1) {
+          // if the action expect exactly one argument, we've
+          // successfully matched the option; exit the loop
+          stop = startIndex + 1;
+          args = [ explicitArg ];
+          actionTuples.push([ action, args, optionString ]);
+          break;
+        } else {
+          // error if a double-dash option did not use the
+          // explicit argument
+          throw argumentErrorHelper(action, sprintf('ignored explicit argument %r', explicitArg));
+        }
+      } else {
+        // if there is no explicit argument, try to match the
+        // optional's string arguments with the following strings
+        // if successful, exit the loop
+
+        start = startIndex + 1;
+        var selectedPatterns = argStringsPattern.substr(start);
+
+        argCount = self._matchArgument(action, selectedPatterns);
+        stop = start + argCount;
+
+
+        args = argStrings.slice(start, stop);
+
+        actionTuples.push([ action, args, optionString ]);
+        break;
+      }
+
+    }
+
+    // add the Optional to the list and return the index at which
+    // the Optional's string args stopped
+    if (actionTuples.length < 1) {
+      throw new Error('length should be > 0');
+    }
+    for (var i = 0; i < actionTuples.length; i++) {
+      takeAction.apply(self, actionTuples[i]);
+    }
+    return stop;
+  }
+
+  // the list of Positionals left to be parsed; this is modified
+  // by consume_positionals()
+  var positionals = self._getPositionalActions();
+
+  function consumePositionals(startIndex) {
+    // match as many Positionals as possible
+    var selectedPattern = argStringsPattern.substr(startIndex);
+    var argCounts = self._matchArgumentsPartial(positionals, selectedPattern);
+
+    // slice off the appropriate arg strings for each Positional
+    // and add the Positional and its args to the list
+    for (var i = 0; i < positionals.length; i++) {
+      var action = positionals[i];
+      var argCount = argCounts[i];
+      if (typeof argCount === 'undefined') {
+        continue;
+      }
+      var args = argStrings.slice(startIndex, startIndex + argCount);
+
+      startIndex += argCount;
+      takeAction(action, args);
+    }
+
+    // slice off the Positionals that we just parsed and return the
+    // index at which the Positionals' string args stopped
+    positionals = positionals.slice(argCounts.length);
+    return startIndex;
+  }
+
+  // consume Positionals and Optionals alternately, until we have
+  // passed the last option string
+  var startIndex = 0;
+  var position;
+
+  var maxOptionStringIndex = -1;
+
+  Object.keys(optionStringIndices).forEach(function (position) {
+    maxOptionStringIndex = Math.max(maxOptionStringIndex, parseInt(position, 10));
+  });
+
+  var positionalsEndIndex, nextOptionStringIndex;
+
+  while (startIndex <= maxOptionStringIndex) {
+    // consume any Positionals preceding the next option
+    nextOptionStringIndex = null;
+    for (position in optionStringIndices) {
+      if (!optionStringIndices.hasOwnProperty(position)) { continue; }
+
+      position = parseInt(position, 10);
+      if (position >= startIndex) {
+        if (nextOptionStringIndex !== null) {
+          nextOptionStringIndex = Math.min(nextOptionStringIndex, position);
+        } else {
+          nextOptionStringIndex = position;
+        }
+      }
+    }
+
+    if (startIndex !== nextOptionStringIndex) {
+      positionalsEndIndex = consumePositionals(startIndex);
+      // only try to parse the next optional if we didn't consume
+      // the option string during the positionals parsing
+      if (positionalsEndIndex > startIndex) {
+        startIndex = positionalsEndIndex;
+        continue;
+      } else {
+        startIndex = positionalsEndIndex;
+      }
+    }
+
+    // if we consumed all the positionals we could and we're not
+    // at the index of an option string, there were extra arguments
+    if (!optionStringIndices[startIndex]) {
+      var strings = argStrings.slice(startIndex, nextOptionStringIndex);
+      extras = extras.concat(strings);
+      startIndex = nextOptionStringIndex;
+    }
+    // consume the next optional and any arguments for it
+    startIndex = consumeOptional(startIndex);
+  }
+
+  // consume any positionals following the last Optional
+  var stopIndex = consumePositionals(startIndex);
+
+  // if we didn't consume all the argument strings, there were extras
+  extras = extras.concat(argStrings.slice(stopIndex));
+
+  // if we didn't use all the Positional objects, there were too few
+  // arg strings supplied.
+  if (positionals.length > 0) {
+    self.error('too few arguments');
+  }
+
+  // make sure all required actions were present
+  self._actions.forEach(function (action) {
+    if (action.required) {
+      if (seenActions.indexOf(action) < 0) {
+        self.error(format('Argument "%s" is required', action.getName()));
+      }
+    }
+  });
+
+  // make sure all required groups have one option present
+  var actionUsed = false;
+  self._mutuallyExclusiveGroups.forEach(function (group) {
+    if (group.required) {
+      actionUsed = group._groupActions.some(function (action) {
+        return seenNonDefaultActions.indexOf(action) !== -1;
+      });
+
+      // if no actions were used, report the error
+      if (!actionUsed) {
+        var names = [];
+        group._groupActions.forEach(function (action) {
+          if (action.help !== c.SUPPRESS) {
+            names.push(action.getName());
+          }
+        });
+        names = names.join(' ');
+        var msg = 'one of the arguments ' + names + ' is required';
+        self.error(msg);
+      }
+    }
+  });
+
+  // return the updated namespace and the extra arguments
+  return [ namespace, extras ];
+};
+
+ArgumentParser.prototype._readArgsFromFiles = function (argStrings) {
+  // expand arguments referencing files
+  var self = this;
+  var fs = require('fs');
+  var newArgStrings = [];
+  argStrings.forEach(function (argString) {
+    if (self.fromfilePrefixChars.indexOf(argString[0]) < 0) {
+      // for regular arguments, just add them back into the list
+      newArgStrings.push(argString);
+    } else {
+      // replace arguments referencing files with the file content
+      try {
+        var argstrs = [];
+        var filename = argString.slice(1);
+        var content = fs.readFileSync(filename, 'utf8');
+        content = content.trim().split('\n');
+        content.forEach(function (argLine) {
+          self.convertArgLineToArgs(argLine).forEach(function (arg) {
+            argstrs.push(arg);
+          });
+          argstrs = self._readArgsFromFiles(argstrs);
+        });
+        newArgStrings.push.apply(newArgStrings, argstrs);
+      } catch (error) {
+        return self.error(error.message);
+      }
+    }
+  });
+  return newArgStrings;
+};
+
+ArgumentParser.prototype.convertArgLineToArgs = function (argLine) {
+  return [ argLine ];
+};
+
+ArgumentParser.prototype._matchArgument = function (action, regexpArgStrings) {
+
+  // match the pattern for this action to the arg strings
+  var regexpNargs = new RegExp('^' + this._getNargsPattern(action));
+  var matches = regexpArgStrings.match(regexpNargs);
+  var message;
+
+  // throw an exception if we weren't able to find a match
+  if (!matches) {
+    switch (action.nargs) {
+      /*eslint-disable no-undefined*/
+      case undefined:
+      case null:
+        message = 'Expected one argument.';
+        break;
+      case c.OPTIONAL:
+        message = 'Expected at most one argument.';
+        break;
+      case c.ONE_OR_MORE:
+        message = 'Expected at least one argument.';
+        break;
+      default:
+        message = 'Expected %s argument(s)';
+    }
+
+    throw argumentErrorHelper(
+      action,
+      format(message, action.nargs)
+    );
+  }
+  // return the number of arguments matched
+  return matches[1].length;
+};
+
+ArgumentParser.prototype._matchArgumentsPartial = function (actions, regexpArgStrings) {
+  // progressively shorten the actions list by slicing off the
+  // final actions until we find a match
+  var self = this;
+  var result = [];
+  var actionSlice, pattern, matches;
+  var i, j;
+
+  function getLength(string) {
+    return string.length;
+  }
+
+  for (i = actions.length; i > 0; i--) {
+    pattern = '';
+    actionSlice = actions.slice(0, i);
+    for (j = 0; j < actionSlice.length; j++) {
+      pattern += self._getNargsPattern(actionSlice[j]);
+    }
+
+    pattern = new RegExp('^' + pattern);
+    matches = regexpArgStrings.match(pattern);
+
+    if (matches && matches.length > 0) {
+      // need only groups
+      matches = matches.splice(1);
+      result = result.concat(matches.map(getLength));
+      break;
+    }
+  }
+
+  // return the list of arg string counts
+  return result;
+};
+
+ArgumentParser.prototype._parseOptional = function (argString) {
+  var action, optionString, argExplicit, optionTuples;
+
+  // if it's an empty string, it was meant to be a positional
+  if (!argString) {
+    return null;
+  }
+
+  // if it doesn't start with a prefix, it was meant to be positional
+  if (this.prefixChars.indexOf(argString[0]) < 0) {
+    return null;
+  }
+
+  // if the option string is present in the parser, return the action
+  if (this._optionStringActions[argString]) {
+    return [ this._optionStringActions[argString], argString, null ];
+  }
+
+  // if it's just a single character, it was meant to be positional
+  if (argString.length === 1) {
+    return null;
+  }
+
+  // if the option string before the "=" is present, return the action
+  if (argString.indexOf('=') >= 0) {
+    optionString = argString.split('=', 1)[0];
+    argExplicit = argString.slice(optionString.length + 1);
+
+    if (this._optionStringActions[optionString]) {
+      action = this._optionStringActions[optionString];
+      return [ action, optionString, argExplicit ];
+    }
+  }
+
+  // search through all possible prefixes of the option string
+  // and all actions in the parser for possible interpretations
+  optionTuples = this._getOptionTuples(argString);
+
+  // if multiple actions match, the option string was ambiguous
+  if (optionTuples.length > 1) {
+    var optionStrings = optionTuples.map(function (optionTuple) {
+      return optionTuple[1];
+    });
+    this.error(format(
+          'Ambiguous option: "%s" could match %s.',
+          argString, optionStrings.join(', ')
+    ));
+  // if exactly one action matched, this segmentation is good,
+  // so return the parsed action
+  } else if (optionTuples.length === 1) {
+    return optionTuples[0];
+  }
+
+  // if it was not found as an option, but it looks like a negative
+  // number, it was meant to be positional
+  // unless there are negative-number-like options
+  if (argString.match(this._regexpNegativeNumber)) {
+    if (!this._hasNegativeNumberOptionals.some(Boolean)) {
+      return null;
+    }
+  }
+  // if it contains a space, it was meant to be a positional
+  if (argString.search(' ') >= 0) {
+    return null;
+  }
+
+  // it was meant to be an optional but there is no such option
+  // in this parser (though it might be a valid option in a subparser)
+  return [ null, argString, null ];
+};
+
+ArgumentParser.prototype._getOptionTuples = function (optionString) {
+  var result = [];
+  var chars = this.prefixChars;
+  var optionPrefix;
+  var argExplicit;
+  var action;
+  var actionOptionString;
+
+  // option strings starting with two prefix characters are only split at
+  // the '='
+  if (chars.indexOf(optionString[0]) >= 0 && chars.indexOf(optionString[1]) >= 0) {
+    if (optionString.indexOf('=') >= 0) {
+      var optionStringSplit = optionString.split('=', 1);
+
+      optionPrefix = optionStringSplit[0];
+      argExplicit = optionStringSplit[1];
+    } else {
+      optionPrefix = optionString;
+      argExplicit = null;
+    }
+
+    for (actionOptionString in this._optionStringActions) {
+      if (actionOptionString.substr(0, optionPrefix.length) === optionPrefix) {
+        action = this._optionStringActions[actionOptionString];
+        result.push([ action, actionOptionString, argExplicit ]);
+      }
+    }
+
+  // single character options can be concatenated with their arguments
+  // but multiple character options always have to have their argument
+  // separate
+  } else if (chars.indexOf(optionString[0]) >= 0 && chars.indexOf(optionString[1]) < 0) {
+    optionPrefix = optionString;
+    argExplicit = null;
+    var optionPrefixShort = optionString.substr(0, 2);
+    var argExplicitShort = optionString.substr(2);
+
+    for (actionOptionString in this._optionStringActions) {
+      if (!$$.has(this._optionStringActions, actionOptionString)) continue;
+
+      action = this._optionStringActions[actionOptionString];
+      if (actionOptionString === optionPrefixShort) {
+        result.push([ action, actionOptionString, argExplicitShort ]);
+      } else if (actionOptionString.substr(0, optionPrefix.length) === optionPrefix) {
+        result.push([ action, actionOptionString, argExplicit ]);
+      }
+    }
+
+  // shouldn't ever get here
+  } else {
+    throw new Error(format('Unexpected option string: %s.', optionString));
+  }
+  // return the collected option tuples
+  return result;
+};
+
+ArgumentParser.prototype._getNargsPattern = function (action) {
+  // in all examples below, we have to allow for '--' args
+  // which are represented as '-' in the pattern
+  var regexpNargs;
+
+  switch (action.nargs) {
+    // the default (null) is assumed to be a single argument
+    case undefined:
+    case null:
+      regexpNargs = '(-*A-*)';
+      break;
+    // allow zero or more arguments
+    case c.OPTIONAL:
+      regexpNargs = '(-*A?-*)';
+      break;
+    // allow zero or more arguments
+    case c.ZERO_OR_MORE:
+      regexpNargs = '(-*[A-]*)';
+      break;
+    // allow one or more arguments
+    case c.ONE_OR_MORE:
+      regexpNargs = '(-*A[A-]*)';
+      break;
+    // allow any number of options or arguments
+    case c.REMAINDER:
+      regexpNargs = '([-AO]*)';
+      break;
+    // allow one argument followed by any number of options or arguments
+    case c.PARSER:
+      regexpNargs = '(-*A[-AO]*)';
+      break;
+    // all others should be integers
+    default:
+      regexpNargs = '(-*' + $$.repeat('-*A', action.nargs) + '-*)';
+  }
+
+  // if this is an optional action, -- is not allowed
+  if (action.isOptional()) {
+    regexpNargs = regexpNargs.replace(/-\*/g, '');
+    regexpNargs = regexpNargs.replace(/-/g, '');
+  }
+
+  // return the pattern
+  return regexpNargs;
+};
+
+//
+// Value conversion methods
+//
+
+ArgumentParser.prototype._getValues = function (action, argStrings) {
+  var self = this;
+
+  // for everything but PARSER args, strip out '--'
+  if (action.nargs !== c.PARSER && action.nargs !== c.REMAINDER) {
+    argStrings = argStrings.filter(function (arrayElement) {
+      return arrayElement !== '--';
+    });
+  }
+
+  var value, argString;
+
+  // optional argument produces a default when not present
+  if (argStrings.length === 0 && action.nargs === c.OPTIONAL) {
+
+    value = (action.isOptional()) ? action.constant : action.defaultValue;
+
+    if (typeof (value) === 'string') {
+      value = this._getValue(action, value);
+      this._checkValue(action, value);
+    }
+
+  // when nargs='*' on a positional, if there were no command-line
+  // args, use the default if it is anything other than None
+  } else if (argStrings.length === 0 && action.nargs === c.ZERO_OR_MORE &&
+    action.optionStrings.length === 0) {
+
+    value = (action.defaultValue || argStrings);
+    this._checkValue(action, value);
+
+  // single argument or optional argument produces a single value
+  } else if (argStrings.length === 1 &&
+        (!action.nargs || action.nargs === c.OPTIONAL)) {
+
+    argString = argStrings[0];
+    value = this._getValue(action, argString);
+    this._checkValue(action, value);
+
+  // REMAINDER arguments convert all values, checking none
+  } else if (action.nargs === c.REMAINDER) {
+    value = argStrings.map(function (v) {
+      return self._getValue(action, v);
+    });
+
+  // PARSER arguments convert all values, but check only the first
+  } else if (action.nargs === c.PARSER) {
+    value = argStrings.map(function (v) {
+      return self._getValue(action, v);
+    });
+    this._checkValue(action, value[0]);
+
+  // all other types of nargs produce a list
+  } else {
+    value = argStrings.map(function (v) {
+      return self._getValue(action, v);
+    });
+    value.forEach(function (v) {
+      self._checkValue(action, v);
+    });
+  }
+
+  // return the converted value
+  return value;
+};
+
+ArgumentParser.prototype._getValue = function (action, argString) {
+  var result;
+
+  var typeFunction = this._registryGet('type', action.type, action.type);
+  if (typeof typeFunction !== 'function') {
+    var message = format('%s is not callable', typeFunction);
+    throw argumentErrorHelper(action, message);
+  }
+
+  // convert the value to the appropriate type
+  try {
+    result = typeFunction(argString);
+
+    // ArgumentTypeErrors indicate errors
+    // If action.type is not a registered string, it is a function
+    // Try to deduce its name for inclusion in the error message
+    // Failing that, include the error message it raised.
+  } catch (e) {
+    var name = null;
+    if (typeof action.type === 'string') {
+      name = action.type;
+    } else {
+      name = action.type.name || action.type.displayName || '<function>';
+    }
+    var msg = format('Invalid %s value: %s', name, argString);
+    if (name === '<function>') { msg += '\n' + e.message; }
+    throw argumentErrorHelper(action, msg);
+  }
+  // return the converted value
+  return result;
+};
+
+ArgumentParser.prototype._checkValue = function (action, value) {
+  // converted value must be one of the choices (if specified)
+  var choices = action.choices;
+  if (choices) {
+    // choise for argument can by array or string
+    if ((typeof choices === 'string' || Array.isArray(choices)) &&
+        choices.indexOf(value) !== -1) {
+      return;
+    }
+    // choise for subparsers can by only hash
+    if (typeof choices === 'object' && !Array.isArray(choices) && choices[value]) {
+      return;
+    }
+
+    if (typeof choices === 'string') {
+      choices = choices.split('').join(', ');
+    } else if (Array.isArray(choices)) {
+      choices =  choices.join(', ');
+    } else {
+      choices =  Object.keys(choices).join(', ');
+    }
+    var message = format('Invalid choice: %s (choose from [%s])', value, choices);
+    throw argumentErrorHelper(action, message);
+  }
+};
+
+//
+// Help formatting methods
+//
+
+/**
+ * ArgumentParser#formatUsage -> string
+ *
+ * Return usage string
+ *
+ * See also [original guide][1]
+ *
+ * [1]:http://docs.python.org/dev/library/argparse.html#printing-help
+ **/
+ArgumentParser.prototype.formatUsage = function () {
+  var formatter = this._getFormatter();
+  formatter.addUsage(this.usage, this._actions, this._mutuallyExclusiveGroups);
+  return formatter.formatHelp();
+};
+
+/**
+ * ArgumentParser#formatHelp -> string
+ *
+ * Return help
+ *
+ * See also [original guide][1]
+ *
+ * [1]:http://docs.python.org/dev/library/argparse.html#printing-help
+ **/
+ArgumentParser.prototype.formatHelp = function () {
+  var formatter = this._getFormatter();
+
+  // usage
+  formatter.addUsage(this.usage, this._actions, this._mutuallyExclusiveGroups);
+
+  // description
+  formatter.addText(this.description);
+
+  // positionals, optionals and user-defined groups
+  this._actionGroups.forEach(function (actionGroup) {
+    formatter.startSection(actionGroup.title);
+    formatter.addText(actionGroup.description);
+    formatter.addArguments(actionGroup._groupActions);
+    formatter.endSection();
+  });
+
+  // epilog
+  formatter.addText(this.epilog);
+
+  // determine help from format above
+  return formatter.formatHelp();
+};
+
+ArgumentParser.prototype._getFormatter = function () {
+  var FormatterClass = this.formatterClass;
+  var formatter = new FormatterClass({ prog: this.prog });
+  return formatter;
+};
+
+//
+//  Print functions
+//
+
+/**
+ * ArgumentParser#printUsage() -> Void
+ *
+ * Print usage
+ *
+ * See also [original guide][1]
+ *
+ * [1]:http://docs.python.org/dev/library/argparse.html#printing-help
+ **/
+ArgumentParser.prototype.printUsage = function () {
+  this._printMessage(this.formatUsage());
+};
+
+/**
+ * ArgumentParser#printHelp() -> Void
+ *
+ * Print help
+ *
+ * See also [original guide][1]
+ *
+ * [1]:http://docs.python.org/dev/library/argparse.html#printing-help
+ **/
+ArgumentParser.prototype.printHelp = function () {
+  this._printMessage(this.formatHelp());
+};
+
+ArgumentParser.prototype._printMessage = function (message, stream) {
+  if (!stream) {
+    stream = process.stdout;
+  }
+  if (message) {
+    stream.write('' + message);
+  }
+};
+
+//
+//  Exit functions
+//
+
+/**
+ * ArgumentParser#exit(status=0, message) -> Void
+ * - status (int): exit status
+ * - message (string): message
+ *
+ * Print message in stderr/stdout and exit program
+ **/
+ArgumentParser.prototype.exit = function (status, message) {
+  if (message) {
+    if (status === 0) {
+      this._printMessage(message);
+    } else {
+      this._printMessage(message, process.stderr);
+    }
+  }
+
+  process.exit(status);
+};
+
+/**
+ * ArgumentParser#error(message) -> Void
+ * - err (Error|string): message
+ *
+ * Error method Prints a usage message incorporating the message to stderr and
+ * exits. If you override this in a subclass,
+ * it should not return -- it should
+ * either exit or throw an exception.
+ *
+ **/
+ArgumentParser.prototype.error = function (err) {
+  var message;
+  if (err instanceof Error) {
+    if (this.debug === true) {
+      throw err;
+    }
+    message = err.message;
+  } else {
+    message = err;
+  }
+  var msg = format('%s: error: %s', this.prog, message) + c.EOL;
+
+  if (this.debug === true) {
+    throw new Error(msg);
+  }
+
+  this.printUsage(process.stderr);
+
+  return this.exit(2, msg);
+};
+
+module.exports = ArgumentParser;
diff --git a/node_modules/argparse/lib/const.js b/node_modules/argparse/lib/const.js
new file mode 100644
index 0000000..b1fd4ce
--- /dev/null
+++ b/node_modules/argparse/lib/const.js
@@ -0,0 +1,21 @@
+//
+// Constants
+//
+
+'use strict';
+
+module.exports.EOL = '\n';
+
+module.exports.SUPPRESS = '==SUPPRESS==';
+
+module.exports.OPTIONAL = '?';
+
+module.exports.ZERO_OR_MORE = '*';
+
+module.exports.ONE_OR_MORE = '+';
+
+module.exports.PARSER = 'A...';
+
+module.exports.REMAINDER = '...';
+
+module.exports._UNRECOGNIZED_ARGS_ATTR = '_unrecognized_args';
diff --git a/node_modules/argparse/lib/help/added_formatters.js b/node_modules/argparse/lib/help/added_formatters.js
new file mode 100644
index 0000000..f8e4299
--- /dev/null
+++ b/node_modules/argparse/lib/help/added_formatters.js
@@ -0,0 +1,87 @@
+'use strict';
+
+var util    = require('util');
+
+// Constants
+var c = require('../const');
+
+var $$ = require('../utils');
+var HelpFormatter = require('./formatter.js');
+
+/**
+ * new RawDescriptionHelpFormatter(options)
+ * new ArgumentParser({formatterClass: argparse.RawDescriptionHelpFormatter, ...})
+ *
+ * Help message formatter which adds default values to argument help.
+ *
+ * Only the name of this class is considered a public API. All the methods
+ * provided by the class are considered an implementation detail.
+ **/
+
+function ArgumentDefaultsHelpFormatter(options) {
+  HelpFormatter.call(this, options);
+}
+
+util.inherits(ArgumentDefaultsHelpFormatter, HelpFormatter);
+
+ArgumentDefaultsHelpFormatter.prototype._getHelpString = function (action) {
+  var help = action.help;
+  if (action.help.indexOf('%(defaultValue)s') === -1) {
+    if (action.defaultValue !== c.SUPPRESS) {
+      var defaulting_nargs = [ c.OPTIONAL, c.ZERO_OR_MORE ];
+      if (action.isOptional() || (defaulting_nargs.indexOf(action.nargs) >= 0)) {
+        help += ' (default: %(defaultValue)s)';
+      }
+    }
+  }
+  return help;
+};
+
+module.exports.ArgumentDefaultsHelpFormatter = ArgumentDefaultsHelpFormatter;
+
+/**
+ * new RawDescriptionHelpFormatter(options)
+ * new ArgumentParser({formatterClass: argparse.RawDescriptionHelpFormatter, ...})
+ *
+ * Help message formatter which retains any formatting in descriptions.
+ *
+ * Only the name of this class is considered a public API. All the methods
+ * provided by the class are considered an implementation detail.
+ **/
+
+function RawDescriptionHelpFormatter(options) {
+  HelpFormatter.call(this, options);
+}
+
+util.inherits(RawDescriptionHelpFormatter, HelpFormatter);
+
+RawDescriptionHelpFormatter.prototype._fillText = function (text, width, indent) {
+  var lines = text.split('\n');
+  lines = lines.map(function (line) {
+    return $$.trimEnd(indent + line);
+  });
+  return lines.join('\n');
+};
+module.exports.RawDescriptionHelpFormatter = RawDescriptionHelpFormatter;
+
+/**
+ * new RawTextHelpFormatter(options)
+ * new ArgumentParser({formatterClass: argparse.RawTextHelpFormatter, ...})
+ *
+ * Help message formatter which retains formatting of all help text.
+ *
+ * Only the name of this class is considered a public API. All the methods
+ * provided by the class are considered an implementation detail.
+ **/
+
+function RawTextHelpFormatter(options) {
+  RawDescriptionHelpFormatter.call(this, options);
+}
+
+util.inherits(RawTextHelpFormatter, RawDescriptionHelpFormatter);
+
+RawTextHelpFormatter.prototype._splitLines = function (text) {
+  return text.split('\n');
+};
+
+module.exports.RawTextHelpFormatter = RawTextHelpFormatter;
diff --git a/node_modules/argparse/lib/help/formatter.js b/node_modules/argparse/lib/help/formatter.js
new file mode 100644
index 0000000..29036c1
--- /dev/null
+++ b/node_modules/argparse/lib/help/formatter.js
@@ -0,0 +1,795 @@
+/**
+ * class HelpFormatter
+ *
+ * Formatter for generating usage messages and argument help strings. Only the
+ * name of this class is considered a public API. All the methods provided by
+ * the class are considered an implementation detail.
+ *
+ * Do not call in your code, use this class only for inherits your own forvatter
+ *
+ * ToDo add [additonal formatters][1]
+ *
+ * [1]:http://docs.python.org/dev/library/argparse.html#formatter-class
+ **/
+'use strict';
+
+var sprintf = require('sprintf-js').sprintf;
+
+// Constants
+var c = require('../const');
+
+var $$ = require('../utils');
+
+
+/*:nodoc:* internal
+ * new Support(parent, heding)
+ * - parent (object): parent section
+ * - heading (string): header string
+ *
+ **/
+function Section(parent, heading) {
+  this._parent = parent;
+  this._heading = heading;
+  this._items = [];
+}
+
+/*:nodoc:* internal
+ * Section#addItem(callback) -> Void
+ * - callback (array): tuple with function and args
+ *
+ * Add function for single element
+ **/
+Section.prototype.addItem = function (callback) {
+  this._items.push(callback);
+};
+
+/*:nodoc:* internal
+ * Section#formatHelp(formatter) -> string
+ * - formatter (HelpFormatter): current formatter
+ *
+ * Form help section string
+ *
+ **/
+Section.prototype.formatHelp = function (formatter) {
+  var itemHelp, heading;
+
+  // format the indented section
+  if (this._parent) {
+    formatter._indent();
+  }
+
+  itemHelp = this._items.map(function (item) {
+    var obj, func, args;
+
+    obj = formatter;
+    func = item[0];
+    args = item[1];
+    return func.apply(obj, args);
+  });
+  itemHelp = formatter._joinParts(itemHelp);
+
+  if (this._parent) {
+    formatter._dedent();
+  }
+
+  // return nothing if the section was empty
+  if (!itemHelp) {
+    return '';
+  }
+
+  // add the heading if the section was non-empty
+  heading = '';
+  if (this._heading && this._heading !== c.SUPPRESS) {
+    var currentIndent = formatter.currentIndent;
+    heading = $$.repeat(' ', currentIndent) + this._heading + ':' + c.EOL;
+  }
+
+  // join the section-initialize newline, the heading and the help
+  return formatter._joinParts([ c.EOL, heading, itemHelp, c.EOL ]);
+};
+
+/**
+ * new HelpFormatter(options)
+ *
+ * #### Options:
+ * - `prog`: program name
+ * - `indentIncriment`: indent step, default value 2
+ * - `maxHelpPosition`: max help position, default value = 24
+ * - `width`: line width
+ *
+ **/
+var HelpFormatter = module.exports = function HelpFormatter(options) {
+  options = options || {};
+
+  this._prog = options.prog;
+
+  this._maxHelpPosition = options.maxHelpPosition || 24;
+  this._width = (options.width || ((process.env.COLUMNS || 80) - 2));
+
+  this._currentIndent = 0;
+  this._indentIncriment = options.indentIncriment || 2;
+  this._level = 0;
+  this._actionMaxLength = 0;
+
+  this._rootSection = new Section(null);
+  this._currentSection = this._rootSection;
+
+  this._whitespaceMatcher = new RegExp('\\s+', 'g');
+  this._longBreakMatcher = new RegExp(c.EOL + c.EOL + c.EOL + '+', 'g');
+};
+
+HelpFormatter.prototype._indent = function () {
+  this._currentIndent += this._indentIncriment;
+  this._level += 1;
+};
+
+HelpFormatter.prototype._dedent = function () {
+  this._currentIndent -= this._indentIncriment;
+  this._level -= 1;
+  if (this._currentIndent < 0) {
+    throw new Error('Indent decreased below 0.');
+  }
+};
+
+HelpFormatter.prototype._addItem = function (func, args) {
+  this._currentSection.addItem([ func, args ]);
+};
+
+//
+// Message building methods
+//
+
+/**
+ * HelpFormatter#startSection(heading) -> Void
+ * - heading (string): header string
+ *
+ * Start new help section
+ *
+ * See alse [code example][1]
+ *
+ * ##### Example
+ *
+ *      formatter.startSection(actionGroup.title);
+ *      formatter.addText(actionGroup.description);
+ *      formatter.addArguments(actionGroup._groupActions);
+ *      formatter.endSection();
+ *
+ **/
+HelpFormatter.prototype.startSection = function (heading) {
+  this._indent();
+  var section = new Section(this._currentSection, heading);
+  var func = section.formatHelp.bind(section);
+  this._addItem(func, [ this ]);
+  this._currentSection = section;
+};
+
+/**
+ * HelpFormatter#endSection -> Void
+ *
+ * End help section
+ *
+ * ##### Example
+ *
+ *      formatter.startSection(actionGroup.title);
+ *      formatter.addText(actionGroup.description);
+ *      formatter.addArguments(actionGroup._groupActions);
+ *      formatter.endSection();
+ **/
+HelpFormatter.prototype.endSection = function () {
+  this._currentSection = this._currentSection._parent;
+  this._dedent();
+};
+
+/**
+ * HelpFormatter#addText(text) -> Void
+ * - text (string): plain text
+ *
+ * Add plain text into current section
+ *
+ * ##### Example
+ *
+ *      formatter.startSection(actionGroup.title);
+ *      formatter.addText(actionGroup.description);
+ *      formatter.addArguments(actionGroup._groupActions);
+ *      formatter.endSection();
+ *
+ **/
+HelpFormatter.prototype.addText = function (text) {
+  if (text && text !== c.SUPPRESS) {
+    this._addItem(this._formatText, [ text ]);
+  }
+};
+
+/**
+ * HelpFormatter#addUsage(usage, actions, groups, prefix) -> Void
+ * - usage (string): usage text
+ * - actions (array): actions list
+ * - groups (array): groups list
+ * - prefix (string): usage prefix
+ *
+ * Add usage data into current section
+ *
+ * ##### Example
+ *
+ *      formatter.addUsage(this.usage, this._actions, []);
+ *      return formatter.formatHelp();
+ *
+ **/
+HelpFormatter.prototype.addUsage = function (usage, actions, groups, prefix) {
+  if (usage !== c.SUPPRESS) {
+    this._addItem(this._formatUsage, [ usage, actions, groups, prefix ]);
+  }
+};
+
+/**
+ * HelpFormatter#addArgument(action) -> Void
+ * - action (object): action
+ *
+ * Add argument into current section
+ *
+ * Single variant of [[HelpFormatter#addArguments]]
+ **/
+HelpFormatter.prototype.addArgument = function (action) {
+  if (action.help !== c.SUPPRESS) {
+    var self = this;
+
+    // find all invocations
+    var invocations = [ this._formatActionInvocation(action) ];
+    var invocationLength = invocations[0].length;
+
+    var actionLength;
+
+    if (action._getSubactions) {
+      this._indent();
+      action._getSubactions().forEach(function (subaction) {
+
+        var invocationNew = self._formatActionInvocation(subaction);
+        invocations.push(invocationNew);
+        invocationLength = Math.max(invocationLength, invocationNew.length);
+
+      });
+      this._dedent();
+    }
+
+    // update the maximum item length
+    actionLength = invocationLength + this._currentIndent;
+    this._actionMaxLength = Math.max(this._actionMaxLength, actionLength);
+
+    // add the item to the list
+    this._addItem(this._formatAction, [ action ]);
+  }
+};
+
+/**
+ * HelpFormatter#addArguments(actions) -> Void
+ * - actions (array): actions list
+ *
+ * Mass add arguments into current section
+ *
+ * ##### Example
+ *
+ *      formatter.startSection(actionGroup.title);
+ *      formatter.addText(actionGroup.description);
+ *      formatter.addArguments(actionGroup._groupActions);
+ *      formatter.endSection();
+ *
+ **/
+HelpFormatter.prototype.addArguments = function (actions) {
+  var self = this;
+  actions.forEach(function (action) {
+    self.addArgument(action);
+  });
+};
+
+//
+// Help-formatting methods
+//
+
+/**
+ * HelpFormatter#formatHelp -> string
+ *
+ * Format help
+ *
+ * ##### Example
+ *
+ *      formatter.addText(this.epilog);
+ *      return formatter.formatHelp();
+ *
+ **/
+HelpFormatter.prototype.formatHelp = function () {
+  var help = this._rootSection.formatHelp(this);
+  if (help) {
+    help = help.replace(this._longBreakMatcher, c.EOL + c.EOL);
+    help = $$.trimChars(help, c.EOL) + c.EOL;
+  }
+  return help;
+};
+
+HelpFormatter.prototype._joinParts = function (partStrings) {
+  return partStrings.filter(function (part) {
+    return (part && part !== c.SUPPRESS);
+  }).join('');
+};
+
+HelpFormatter.prototype._formatUsage = function (usage, actions, groups, prefix) {
+  if (!prefix && typeof prefix !== 'string') {
+    prefix = 'usage: ';
+  }
+
+  actions = actions || [];
+  groups = groups || [];
+
+
+  // if usage is specified, use that
+  if (usage) {
+    usage = sprintf(usage, { prog: this._prog });
+
+    // if no optionals or positionals are available, usage is just prog
+  } else if (!usage && actions.length === 0) {
+    usage = this._prog;
+
+    // if optionals and positionals are available, calculate usage
+  } else if (!usage) {
+    var prog = this._prog;
+    var optionals = [];
+    var positionals = [];
+    var actionUsage;
+    var textWidth;
+
+    // split optionals from positionals
+    actions.forEach(function (action) {
+      if (action.isOptional()) {
+        optionals.push(action);
+      } else {
+        positionals.push(action);
+      }
+    });
+
+    // build full usage string
+    actionUsage = this._formatActionsUsage([].concat(optionals, positionals), groups);
+    usage = [ prog, actionUsage ].join(' ');
+
+    // wrap the usage parts if it's too long
+    textWidth = this._width - this._currentIndent;
+    if ((prefix.length + usage.length) > textWidth) {
+
+      // break usage into wrappable parts
+      var regexpPart = new RegExp('\\(.*?\\)+|\\[.*?\\]+|\\S+', 'g');
+      var optionalUsage = this._formatActionsUsage(optionals, groups);
+      var positionalUsage = this._formatActionsUsage(positionals, groups);
+
+
+      var optionalParts = optionalUsage.match(regexpPart);
+      var positionalParts = positionalUsage.match(regexpPart) || [];
+
+      if (optionalParts.join(' ') !== optionalUsage) {
+        throw new Error('assert "optionalParts.join(\' \') === optionalUsage"');
+      }
+      if (positionalParts.join(' ') !== positionalUsage) {
+        throw new Error('assert "positionalParts.join(\' \') === positionalUsage"');
+      }
+
+      // helper for wrapping lines
+      /*eslint-disable func-style*/ // node 0.10 compat
+      var _getLines = function (parts, indent, prefix) {
+        var lines = [];
+        var line = [];
+
+        var lineLength = prefix ? prefix.length - 1 : indent.length - 1;
+
+        parts.forEach(function (part) {
+          if (lineLength + 1 + part.length > textWidth) {
+            lines.push(indent + line.join(' '));
+            line = [];
+            lineLength = indent.length - 1;
+          }
+          line.push(part);
+          lineLength += part.length + 1;
+        });
+
+        if (line) {
+          lines.push(indent + line.join(' '));
+        }
+        if (prefix) {
+          lines[0] = lines[0].substr(indent.length);
+        }
+        return lines;
+      };
+
+      var lines, indent, parts;
+      // if prog is short, follow it with optionals or positionals
+      if (prefix.length + prog.length <= 0.75 * textWidth) {
+        indent = $$.repeat(' ', (prefix.length + prog.length + 1));
+        if (optionalParts) {
+          lines = [].concat(
+            _getLines([ prog ].concat(optionalParts), indent, prefix),
+            _getLines(positionalParts, indent)
+          );
+        } else if (positionalParts) {
+          lines = _getLines([ prog ].concat(positionalParts), indent, prefix);
+        } else {
+          lines = [ prog ];
+        }
+
+        // if prog is long, put it on its own line
+      } else {
+        indent = $$.repeat(' ', prefix.length);
+        parts = optionalParts.concat(positionalParts);
+        lines = _getLines(parts, indent);
+        if (lines.length > 1) {
+          lines = [].concat(
+            _getLines(optionalParts, indent),
+            _getLines(positionalParts, indent)
+          );
+        }
+        lines = [ prog ].concat(lines);
+      }
+      // join lines into usage
+      usage = lines.join(c.EOL);
+    }
+  }
+
+  // prefix with 'usage:'
+  return prefix + usage + c.EOL + c.EOL;
+};
+
+HelpFormatter.prototype._formatActionsUsage = function (actions, groups) {
+  // find group indices and identify actions in groups
+  var groupActions = [];
+  var inserts = [];
+  var self = this;
+
+  groups.forEach(function (group) {
+    var end;
+    var i;
+
+    var start = actions.indexOf(group._groupActions[0]);
+    if (start >= 0) {
+      end = start + group._groupActions.length;
+
+      //if (actions.slice(start, end) === group._groupActions) {
+      if ($$.arrayEqual(actions.slice(start, end), group._groupActions)) {
+        group._groupActions.forEach(function (action) {
+          groupActions.push(action);
+        });
+
+        if (!group.required) {
+          if (inserts[start]) {
+            inserts[start] += ' [';
+          } else {
+            inserts[start] = '[';
+          }
+          inserts[end] = ']';
+        } else {
+          if (inserts[start]) {
+            inserts[start] += ' (';
+          } else {
+            inserts[start] = '(';
+          }
+          inserts[end] = ')';
+        }
+        for (i = start + 1; i < end; i += 1) {
+          inserts[i] = '|';
+        }
+      }
+    }
+  });
+
+  // collect all actions format strings
+  var parts = [];
+
+  actions.forEach(function (action, actionIndex) {
+    var part;
+    var optionString;
+    var argsDefault;
+    var argsString;
+
+    // suppressed arguments are marked with None
+    // remove | separators for suppressed arguments
+    if (action.help === c.SUPPRESS) {
+      parts.push(null);
+      if (inserts[actionIndex] === '|') {
+        inserts.splice(actionIndex, actionIndex);
+      } else if (inserts[actionIndex + 1] === '|') {
+        inserts.splice(actionIndex + 1, actionIndex + 1);
+      }
+
+      // produce all arg strings
+    } else if (!action.isOptional()) {
+      part = self._formatArgs(action, action.dest);
+
+      // if it's in a group, strip the outer []
+      if (groupActions.indexOf(action) >= 0) {
+        if (part[0] === '[' && part[part.length - 1] === ']') {
+          part = part.slice(1, -1);
+        }
+      }
+      // add the action string to the list
+      parts.push(part);
+
+    // produce the first way to invoke the option in brackets
+    } else {
+      optionString = action.optionStrings[0];
+
+      // if the Optional doesn't take a value, format is: -s or --long
+      if (action.nargs === 0) {
+        part = '' + optionString;
+
+      // if the Optional takes a value, format is: -s ARGS or --long ARGS
+      } else {
+        argsDefault = action.dest.toUpperCase();
+        argsString = self._formatArgs(action, argsDefault);
+        part = optionString + ' ' + argsString;
+      }
+      // make it look optional if it's not required or in a group
+      if (!action.required && groupActions.indexOf(action) < 0) {
+        part = '[' + part + ']';
+      }
+      // add the action string to the list
+      parts.push(part);
+    }
+  });
+
+  // insert things at the necessary indices
+  for (var i = inserts.length - 1; i >= 0; --i) {
+    if (inserts[i] !== null) {
+      parts.splice(i, 0, inserts[i]);
+    }
+  }
+
+  // join all the action items with spaces
+  var text = parts.filter(function (part) {
+    return !!part;
+  }).join(' ');
+
+  // clean up separators for mutually exclusive groups
+  text = text.replace(/([\[(]) /g, '$1'); // remove spaces
+  text = text.replace(/ ([\])])/g, '$1');
+  text = text.replace(/\[ *\]/g, ''); // remove empty groups
+  text = text.replace(/\( *\)/g, '');
+  text = text.replace(/\(([^|]*)\)/g, '$1'); // remove () from single action groups
+
+  text = text.trim();
+
+  // return the text
+  return text;
+};
+
+HelpFormatter.prototype._formatText = function (text) {
+  text = sprintf(text, { prog: this._prog });
+  var textWidth = this._width - this._currentIndent;
+  var indentIncriment = $$.repeat(' ', this._currentIndent);
+  return this._fillText(text, textWidth, indentIncriment) + c.EOL + c.EOL;
+};
+
+HelpFormatter.prototype._formatAction = function (action) {
+  var self = this;
+
+  var helpText;
+  var helpLines;
+  var parts;
+  var indentFirst;
+
+  // determine the required width and the entry label
+  var helpPosition = Math.min(this._actionMaxLength + 2, this._maxHelpPosition);
+  var helpWidth = this._width - helpPosition;
+  var actionWidth = helpPosition - this._currentIndent - 2;
+  var actionHeader = this._formatActionInvocation(action);
+
+  // no help; start on same line and add a final newline
+  if (!action.help) {
+    actionHeader = $$.repeat(' ', this._currentIndent) + actionHeader + c.EOL;
+
+  // short action name; start on the same line and pad two spaces
+  } else if (actionHeader.length <= actionWidth) {
+    actionHeader = $$.repeat(' ', this._currentIndent) +
+        actionHeader +
+        '  ' +
+        $$.repeat(' ', actionWidth - actionHeader.length);
+    indentFirst = 0;
+
+  // long action name; start on the next line
+  } else {
+    actionHeader = $$.repeat(' ', this._currentIndent) + actionHeader + c.EOL;
+    indentFirst = helpPosition;
+  }
+
+  // collect the pieces of the action help
+  parts = [ actionHeader ];
+
+  // if there was help for the action, add lines of help text
+  if (action.help) {
+    helpText = this._expandHelp(action);
+    helpLines = this._splitLines(helpText, helpWidth);
+    parts.push($$.repeat(' ', indentFirst) + helpLines[0] + c.EOL);
+    helpLines.slice(1).forEach(function (line) {
+      parts.push($$.repeat(' ', helpPosition) + line + c.EOL);
+    });
+
+  // or add a newline if the description doesn't end with one
+  } else if (actionHeader.charAt(actionHeader.length - 1) !== c.EOL) {
+    parts.push(c.EOL);
+  }
+  // if there are any sub-actions, add their help as well
+  if (action._getSubactions) {
+    this._indent();
+    action._getSubactions().forEach(function (subaction) {
+      parts.push(self._formatAction(subaction));
+    });
+    this._dedent();
+  }
+  // return a single string
+  return this._joinParts(parts);
+};
+
+HelpFormatter.prototype._formatActionInvocation = function (action) {
+  if (!action.isOptional()) {
+    var format_func = this._metavarFormatter(action, action.dest);
+    var metavars = format_func(1);
+    return metavars[0];
+  }
+
+  var parts = [];
+  var argsDefault;
+  var argsString;
+
+  // if the Optional doesn't take a value, format is: -s, --long
+  if (action.nargs === 0) {
+    parts = parts.concat(action.optionStrings);
+
+  // if the Optional takes a value, format is: -s ARGS, --long ARGS
+  } else {
+    argsDefault = action.dest.toUpperCase();
+    argsString = this._formatArgs(action, argsDefault);
+    action.optionStrings.forEach(function (optionString) {
+      parts.push(optionString + ' ' + argsString);
+    });
+  }
+  return parts.join(', ');
+};
+
+HelpFormatter.prototype._metavarFormatter = function (action, metavarDefault) {
+  var result;
+
+  if (action.metavar || action.metavar === '') {
+    result = action.metavar;
+  } else if (action.choices) {
+    var choices = action.choices;
+
+    if (typeof choices === 'string') {
+      choices = choices.split('').join(', ');
+    } else if (Array.isArray(choices)) {
+      choices = choices.join(',');
+    } else {
+      choices = Object.keys(choices).join(',');
+    }
+    result = '{' + choices + '}';
+  } else {
+    result = metavarDefault;
+  }
+
+  return function (size) {
+    if (Array.isArray(result)) {
+      return result;
+    }
+
+    var metavars = [];
+    for (var i = 0; i < size; i += 1) {
+      metavars.push(result);
+    }
+    return metavars;
+  };
+};
+
+HelpFormatter.prototype._formatArgs = function (action, metavarDefault) {
+  var result;
+  var metavars;
+
+  var buildMetavar = this._metavarFormatter(action, metavarDefault);
+
+  switch (action.nargs) {
+    /*eslint-disable no-undefined*/
+    case undefined:
+    case null:
+      metavars = buildMetavar(1);
+      result = '' + metavars[0];
+      break;
+    case c.OPTIONAL:
+      metavars = buildMetavar(1);
+      result = '[' + metavars[0] + ']';
+      break;
+    case c.ZERO_OR_MORE:
+      metavars = buildMetavar(2);
+      result = '[' + metavars[0] + ' [' + metavars[1] + ' ...]]';
+      break;
+    case c.ONE_OR_MORE:
+      metavars = buildMetavar(2);
+      result = '' + metavars[0] + ' [' + metavars[1] + ' ...]';
+      break;
+    case c.REMAINDER:
+      result = '...';
+      break;
+    case c.PARSER:
+      metavars = buildMetavar(1);
+      result = metavars[0] + ' ...';
+      break;
+    default:
+      metavars = buildMetavar(action.nargs);
+      result = metavars.join(' ');
+  }
+  return result;
+};
+
+HelpFormatter.prototype._expandHelp = function (action) {
+  var params = { prog: this._prog };
+
+  Object.keys(action).forEach(function (actionProperty) {
+    var actionValue = action[actionProperty];
+
+    if (actionValue !== c.SUPPRESS) {
+      params[actionProperty] = actionValue;
+    }
+  });
+
+  if (params.choices) {
+    if (typeof params.choices === 'string') {
+      params.choices = params.choices.split('').join(', ');
+    } else if (Array.isArray(params.choices)) {
+      params.choices = params.choices.join(', ');
+    } else {
+      params.choices = Object.keys(params.choices).join(', ');
+    }
+  }
+
+  return sprintf(this._getHelpString(action), params);
+};
+
+HelpFormatter.prototype._splitLines = function (text, width) {
+  var lines = [];
+  var delimiters = [ ' ', '.', ',', '!', '?' ];
+  var re = new RegExp('[' + delimiters.join('') + '][^' + delimiters.join('') + ']*$');
+
+  text = text.replace(/[\n\|\t]/g, ' ');
+
+  text = text.trim();
+  text = text.replace(this._whitespaceMatcher, ' ');
+
+  // Wraps the single paragraph in text (a string) so every line
+  // is at most width characters long.
+  text.split(c.EOL).forEach(function (line) {
+    if (width >= line.length) {
+      lines.push(line);
+      return;
+    }
+
+    var wrapStart = 0;
+    var wrapEnd = width;
+    var delimiterIndex = 0;
+    while (wrapEnd <= line.length) {
+      if (wrapEnd !== line.length && delimiters.indexOf(line[wrapEnd] < -1)) {
+        delimiterIndex = (re.exec(line.substring(wrapStart, wrapEnd)) || {}).index;
+        wrapEnd = wrapStart + delimiterIndex + 1;
+      }
+      lines.push(line.substring(wrapStart, wrapEnd));
+      wrapStart = wrapEnd;
+      wrapEnd += width;
+    }
+    if (wrapStart < line.length) {
+      lines.push(line.substring(wrapStart, wrapEnd));
+    }
+  });
+
+  return lines;
+};
+
+HelpFormatter.prototype._fillText = function (text, width, indent) {
+  var lines = this._splitLines(text, width);
+  lines = lines.map(function (line) {
+    return indent + line;
+  });
+  return lines.join(c.EOL);
+};
+
+HelpFormatter.prototype._getHelpString = function (action) {
+  return action.help;
+};
diff --git a/node_modules/argparse/lib/namespace.js b/node_modules/argparse/lib/namespace.js
new file mode 100644
index 0000000..a860de9
--- /dev/null
+++ b/node_modules/argparse/lib/namespace.js
@@ -0,0 +1,76 @@
+/**
+ * class Namespace
+ *
+ * Simple object for storing attributes. Implements equality by attribute names
+ * and values, and provides a simple string representation.
+ *
+ * See also [original guide][1]
+ *
+ * [1]:http://docs.python.org/dev/library/argparse.html#the-namespace-object
+ **/
+'use strict';
+
+var $$ = require('./utils');
+
+/**
+ * new Namespace(options)
+ * - options(object): predefined propertis for result object
+ *
+ **/
+var Namespace = module.exports = function Namespace(options) {
+  $$.extend(this, options);
+};
+
+/**
+ * Namespace#isset(key) -> Boolean
+ * - key (string|number): property name
+ *
+ * Tells whenever `namespace` contains given `key` or not.
+ **/
+Namespace.prototype.isset = function (key) {
+  return $$.has(this, key);
+};
+
+/**
+ * Namespace#set(key, value) -> self
+ * -key (string|number|object): propery name
+ * -value (mixed): new property value
+ *
+ * Set the property named key with value.
+ * If key object then set all key properties to namespace object
+ **/
+Namespace.prototype.set = function (key, value) {
+  if (typeof (key) === 'object') {
+    $$.extend(this, key);
+  } else {
+    this[key] = value;
+  }
+  return this;
+};
+
+/**
+ * Namespace#get(key, defaultValue) -> mixed
+ * - key (string|number): property name
+ * - defaultValue (mixed): default value
+ *
+ * Return the property key or defaulValue if not set
+ **/
+Namespace.prototype.get = function (key, defaultValue) {
+  return !this[key] ? defaultValue : this[key];
+};
+
+/**
+ * Namespace#unset(key, defaultValue) -> mixed
+ * - key (string|number): property name
+ * - defaultValue (mixed): default value
+ *
+ * Return data[key](and delete it) or defaultValue
+ **/
+Namespace.prototype.unset = function (key, defaultValue) {
+  var value = this[key];
+  if (value !== null) {
+    delete this[key];
+    return value;
+  }
+  return defaultValue;
+};
diff --git a/node_modules/argparse/lib/utils.js b/node_modules/argparse/lib/utils.js
new file mode 100644
index 0000000..4a9cf3e
--- /dev/null
+++ b/node_modules/argparse/lib/utils.js
@@ -0,0 +1,57 @@
+'use strict';
+
+exports.repeat = function (str, num) {
+  var result = '';
+  for (var i = 0; i < num; i++) { result += str; }
+  return result;
+};
+
+exports.arrayEqual = function (a, b) {
+  if (a.length !== b.length) { return false; }
+  for (var i = 0; i < a.length; i++) {
+    if (a[i] !== b[i]) { return false; }
+  }
+  return true;
+};
+
+exports.trimChars = function (str, chars) {
+  var start = 0;
+  var end = str.length - 1;
+  while (chars.indexOf(str.charAt(start)) >= 0) { start++; }
+  while (chars.indexOf(str.charAt(end)) >= 0) { end--; }
+  return str.slice(start, end + 1);
+};
+
+exports.capitalize = function (str) {
+  return str.charAt(0).toUpperCase() + str.slice(1);
+};
+
+exports.arrayUnion = function () {
+  var result = [];
+  for (var i = 0, values = {}; i < arguments.length; i++) {
+    var arr = arguments[i];
+    for (var j = 0; j < arr.length; j++) {
+      if (!values[arr[j]]) {
+        values[arr[j]] = true;
+        result.push(arr[j]);
+      }
+    }
+  }
+  return result;
+};
+
+function has(obj, key) {
+  return Object.prototype.hasOwnProperty.call(obj, key);
+}
+
+exports.has = has;
+
+exports.extend = function (dest, src) {
+  for (var i in src) {
+    if (has(src, i)) { dest[i] = src[i]; }
+  }
+};
+
+exports.trimEnd = function (str) {
+  return str.replace(/\s+$/g, '');
+};