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diff --git a/node_modules/snapdragon-node/index.js b/node_modules/snapdragon-node/index.js
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+'use strict';
+
+var isObject = require('isobject');
+var define = require('define-property');
+var utils = require('snapdragon-util');
+var ownNames;
+
+/**
+ * Create a new AST `Node` with the given `val` and `type`.
+ *
+ * ```js
+ * var node = new Node('*', 'Star');
+ * var node = new Node({type: 'star', val: '*'});
+ * ```
+ * @name Node
+ * @param {String|Object} `val` Pass a matched substring, or an object to merge onto the node.
+ * @param {String} `type` The node type to use when `val` is a string.
+ * @return {Object} node instance
+ * @api public
+ */
+
+function Node(val, type, parent) {
+  if (typeof type !== 'string') {
+    parent = type;
+    type = null;
+  }
+
+  define(this, 'parent', parent);
+  define(this, 'isNode', true);
+  define(this, 'expect', null);
+
+  if (typeof type !== 'string' && isObject(val)) {
+    lazyKeys();
+    var keys = Object.keys(val);
+    for (var i = 0; i < keys.length; i++) {
+      var key = keys[i];
+      if (ownNames.indexOf(key) === -1) {
+        this[key] = val[key];
+      }
+    }
+  } else {
+    this.type = type;
+    this.val = val;
+  }
+}
+
+/**
+ * Returns true if the given value is a node.
+ *
+ * ```js
+ * var Node = require('snapdragon-node');
+ * var node = new Node({type: 'foo'});
+ * console.log(Node.isNode(node)); //=> true
+ * console.log(Node.isNode({})); //=> false
+ * ```
+ * @param {Object} `node`
+ * @returns {Boolean}
+ * @api public
+ */
+
+Node.isNode = function(node) {
+  return utils.isNode(node);
+};
+
+/**
+ * Define a non-enumberable property on the node instance.
+ * Useful for adding properties that shouldn't be extended
+ * or visible during debugging.
+ *
+ * ```js
+ * var node = new Node();
+ * node.define('foo', 'something non-enumerable');
+ * ```
+ * @param {String} `name`
+ * @param {any} `val`
+ * @return {Object} returns the node instance
+ * @api public
+ */
+
+Node.prototype.define = function(name, val) {
+  define(this, name, val);
+  return this;
+};
+
+/**
+ * Returns true if `node.val` is an empty string, or `node.nodes` does
+ * not contain any non-empty text nodes.
+ *
+ * ```js
+ * var node = new Node({type: 'text'});
+ * node.isEmpty(); //=> true
+ * node.val = 'foo';
+ * node.isEmpty(); //=> false
+ * ```
+ * @param {Function} `fn` (optional) Filter function that is called on `node` and/or child nodes. `isEmpty` will return false immediately when the filter function returns false on any nodes.
+ * @return {Boolean}
+ * @api public
+ */
+
+Node.prototype.isEmpty = function(fn) {
+  return utils.isEmpty(this, fn);
+};
+
+/**
+ * Given node `foo` and node `bar`, push node `bar` onto `foo.nodes`, and
+ * set `foo` as `bar.parent`.
+ *
+ * ```js
+ * var foo = new Node({type: 'foo'});
+ * var bar = new Node({type: 'bar'});
+ * foo.push(bar);
+ * ```
+ * @param {Object} `node`
+ * @return {Number} Returns the length of `node.nodes`
+ * @api public
+ */
+
+Node.prototype.push = function(node) {
+  assert(Node.isNode(node), 'expected node to be an instance of Node');
+  define(node, 'parent', this);
+
+  this.nodes = this.nodes || [];
+  return this.nodes.push(node);
+};
+
+/**
+ * Given node `foo` and node `bar`, unshift node `bar` onto `foo.nodes`, and
+ * set `foo` as `bar.parent`.
+ *
+ * ```js
+ * var foo = new Node({type: 'foo'});
+ * var bar = new Node({type: 'bar'});
+ * foo.unshift(bar);
+ * ```
+ * @param {Object} `node`
+ * @return {Number} Returns the length of `node.nodes`
+ * @api public
+ */
+
+Node.prototype.unshift = function(node) {
+  assert(Node.isNode(node), 'expected node to be an instance of Node');
+  define(node, 'parent', this);
+
+  this.nodes = this.nodes || [];
+  return this.nodes.unshift(node);
+};
+
+/**
+ * Pop a node from `node.nodes`.
+ *
+ * ```js
+ * var node = new Node({type: 'foo'});
+ * node.push(new Node({type: 'a'}));
+ * node.push(new Node({type: 'b'}));
+ * node.push(new Node({type: 'c'}));
+ * node.push(new Node({type: 'd'}));
+ * console.log(node.nodes.length);
+ * //=> 4
+ * node.pop();
+ * console.log(node.nodes.length);
+ * //=> 3
+ * ```
+ * @return {Number} Returns the popped `node`
+ * @api public
+ */
+
+Node.prototype.pop = function() {
+  return this.nodes && this.nodes.pop();
+};
+
+/**
+ * Shift a node from `node.nodes`.
+ *
+ * ```js
+ * var node = new Node({type: 'foo'});
+ * node.push(new Node({type: 'a'}));
+ * node.push(new Node({type: 'b'}));
+ * node.push(new Node({type: 'c'}));
+ * node.push(new Node({type: 'd'}));
+ * console.log(node.nodes.length);
+ * //=> 4
+ * node.shift();
+ * console.log(node.nodes.length);
+ * //=> 3
+ * ```
+ * @return {Object} Returns the shifted `node`
+ * @api public
+ */
+
+Node.prototype.shift = function() {
+  return this.nodes && this.nodes.shift();
+};
+
+/**
+ * Remove `node` from `node.nodes`.
+ *
+ * ```js
+ * node.remove(childNode);
+ * ```
+ * @param {Object} `node`
+ * @return {Object} Returns the removed node.
+ * @api public
+ */
+
+Node.prototype.remove = function(node) {
+  assert(Node.isNode(node), 'expected node to be an instance of Node');
+  this.nodes = this.nodes || [];
+  var idx = node.index;
+  if (idx !== -1) {
+    node.index = -1;
+    return this.nodes.splice(idx, 1);
+  }
+  return null;
+};
+
+/**
+ * Get the first child node from `node.nodes` that matches the given `type`.
+ * If `type` is a number, the child node at that index is returned.
+ *
+ * ```js
+ * var child = node.find(1); //<= index of the node to get
+ * var child = node.find('foo'); //<= node.type of a child node
+ * var child = node.find(/^(foo|bar)$/); //<= regex to match node.type
+ * var child = node.find(['foo', 'bar']); //<= array of node.type(s)
+ * ```
+ * @param {String} `type`
+ * @return {Object} Returns a child node or undefined.
+ * @api public
+ */
+
+Node.prototype.find = function(type) {
+  return utils.findNode(this.nodes, type);
+};
+
+/**
+ * Return true if the node is the given `type`.
+ *
+ * ```js
+ * var node = new Node({type: 'bar'});
+ * cosole.log(node.isType('foo'));          // false
+ * cosole.log(node.isType(/^(foo|bar)$/));  // true
+ * cosole.log(node.isType(['foo', 'bar'])); // true
+ * ```
+ * @param {String} `type`
+ * @return {Boolean}
+ * @api public
+ */
+
+Node.prototype.isType = function(type) {
+  return utils.isType(this, type);
+};
+
+/**
+ * Return true if the `node.nodes` has the given `type`.
+ *
+ * ```js
+ * var foo = new Node({type: 'foo'});
+ * var bar = new Node({type: 'bar'});
+ * foo.push(bar);
+ *
+ * cosole.log(foo.hasType('qux'));          // false
+ * cosole.log(foo.hasType(/^(qux|bar)$/));  // true
+ * cosole.log(foo.hasType(['qux', 'bar'])); // true
+ * ```
+ * @param {String} `type`
+ * @return {Boolean}
+ * @api public
+ */
+
+Node.prototype.hasType = function(type) {
+  return utils.hasType(this, type);
+};
+
+/**
+ * Get the siblings array, or `null` if it doesn't exist.
+ *
+ * ```js
+ * var foo = new Node({type: 'foo'});
+ * var bar = new Node({type: 'bar'});
+ * var baz = new Node({type: 'baz'});
+ * foo.push(bar);
+ * foo.push(baz);
+ *
+ * console.log(bar.siblings.length) // 2
+ * console.log(baz.siblings.length) // 2
+ * ```
+ * @return {Array}
+ * @api public
+ */
+
+Object.defineProperty(Node.prototype, 'siblings', {
+  set: function() {
+    throw new Error('node.siblings is a getter and cannot be defined');
+  },
+  get: function() {
+    return this.parent ? this.parent.nodes : null;
+  }
+});
+
+/**
+ * Get the node's current index from `node.parent.nodes`.
+ * This should always be correct, even when the parent adds nodes.
+ *
+ * ```js
+ * var foo = new Node({type: 'foo'});
+ * var bar = new Node({type: 'bar'});
+ * var baz = new Node({type: 'baz'});
+ * var qux = new Node({type: 'qux'});
+ * foo.push(bar);
+ * foo.push(baz);
+ * foo.unshift(qux);
+ *
+ * console.log(bar.index) // 1
+ * console.log(baz.index) // 2
+ * console.log(qux.index) // 0
+ * ```
+ * @return {Number}
+ * @api public
+ */
+
+Object.defineProperty(Node.prototype, 'index', {
+  set: function(index) {
+    define(this, 'idx', index);
+  },
+  get: function() {
+    if (!Array.isArray(this.siblings)) {
+      return -1;
+    }
+    var tok = this.idx !== -1 ? this.siblings[this.idx] : null;
+    if (tok !== this) {
+      this.idx = this.siblings.indexOf(this);
+    }
+    return this.idx;
+  }
+});
+
+/**
+ * Get the previous node from the siblings array or `null`.
+ *
+ * ```js
+ * var foo = new Node({type: 'foo'});
+ * var bar = new Node({type: 'bar'});
+ * var baz = new Node({type: 'baz'});
+ * foo.push(bar);
+ * foo.push(baz);
+ *
+ * console.log(baz.prev.type) // 'bar'
+ * ```
+ * @return {Object}
+ * @api public
+ */
+
+Object.defineProperty(Node.prototype, 'prev', {
+  set: function() {
+    throw new Error('node.prev is a getter and cannot be defined');
+  },
+  get: function() {
+    if (Array.isArray(this.siblings)) {
+      return this.siblings[this.index - 1] || this.parent.prev;
+    }
+    return null;
+  }
+});
+
+/**
+ * Get the siblings array, or `null` if it doesn't exist.
+ *
+ * ```js
+ * var foo = new Node({type: 'foo'});
+ * var bar = new Node({type: 'bar'});
+ * var baz = new Node({type: 'baz'});
+ * foo.push(bar);
+ * foo.push(baz);
+ *
+ * console.log(bar.siblings.length) // 2
+ * console.log(baz.siblings.length) // 2
+ * ```
+ * @return {Object}
+ * @api public
+ */
+
+Object.defineProperty(Node.prototype, 'next', {
+  set: function() {
+    throw new Error('node.next is a getter and cannot be defined');
+  },
+  get: function() {
+    if (Array.isArray(this.siblings)) {
+      return this.siblings[this.index + 1] || this.parent.next;
+    }
+    return null;
+  }
+});
+
+/**
+ * Get the first node from `node.nodes`.
+ *
+ * ```js
+ * var foo = new Node({type: 'foo'});
+ * var bar = new Node({type: 'bar'});
+ * var baz = new Node({type: 'baz'});
+ * var qux = new Node({type: 'qux'});
+ * foo.push(bar);
+ * foo.push(baz);
+ * foo.push(qux);
+ *
+ * console.log(foo.first.type) // 'bar'
+ * ```
+ * @return {Object} The first node, or undefiend
+ * @api public
+ */
+
+Object.defineProperty(Node.prototype, 'first', {
+  get: function() {
+    return this.nodes ? this.nodes[0] : null;
+  }
+});
+
+/**
+ * Get the last node from `node.nodes`.
+ *
+ * ```js
+ * var foo = new Node({type: 'foo'});
+ * var bar = new Node({type: 'bar'});
+ * var baz = new Node({type: 'baz'});
+ * var qux = new Node({type: 'qux'});
+ * foo.push(bar);
+ * foo.push(baz);
+ * foo.push(qux);
+ *
+ * console.log(foo.last.type) // 'qux'
+ * ```
+ * @return {Object} The last node, or undefiend
+ * @api public
+ */
+
+Object.defineProperty(Node.prototype, 'last', {
+  get: function() {
+    return this.nodes ? utils.last(this.nodes) : null;
+  }
+});
+
+/**
+ * Get the last node from `node.nodes`.
+ *
+ * ```js
+ * var foo = new Node({type: 'foo'});
+ * var bar = new Node({type: 'bar'});
+ * var baz = new Node({type: 'baz'});
+ * var qux = new Node({type: 'qux'});
+ * foo.push(bar);
+ * foo.push(baz);
+ * foo.push(qux);
+ *
+ * console.log(foo.last.type) // 'qux'
+ * ```
+ * @return {Object} The last node, or undefiend
+ * @api public
+ */
+
+Object.defineProperty(Node.prototype, 'scope', {
+  get: function() {
+    if (this.isScope !== true) {
+      return this.parent ? this.parent.scope : this;
+    }
+    return this;
+  }
+});
+
+/**
+ * Get own property names from Node prototype, but only the
+ * first time `Node` is instantiated
+ */
+
+function lazyKeys() {
+  if (!ownNames) {
+    ownNames = Object.getOwnPropertyNames(Node.prototype);
+  }
+}
+
+/**
+ * Simplified assertion. Throws an error is `val` is falsey.
+ */
+
+function assert(val, message) {
+  if (!val) throw new Error(message);
+}
+
+/**
+ * Expose `Node`
+ */
+
+exports = module.exports = Node;