diff --git a/README.md b/README.md
index 9b3dc4cc..52bb9393 100644
--- a/README.md
+++ b/README.md
@@ -11,6 +11,7 @@ The Most Versatile JavaScript Animated Typing Utility on the Planet
 * [Usage](#usage)
 * [API](#api)
 * [Options](#options)
+* [Callback Methods](#callback-methods)
 * [CodePen Examples](#codepen-examples)
 * [Contribute](#contribute)
 * [License](#license)
@@ -132,7 +133,13 @@ new TypeIt('.typeit-box', {
 ```
 
 #### Companion Functions
-To control a typewriter effect to the smallest character, pause, speed, or more, there companion functions available. Simply chain them together on an instance of TypeIt, and your chain will execute. You'll be able to create a dynamic, realistic narrative with just a few lines of code.
+To control a typewriter effect to the smallest character, pause, speed, or more, there companion functions available. Simply chain them together on an instance of TypeIt, and your chain will execute. You'll be able to create a dynamic, realistic narrative with just a few lines of code that looks something like this:
+
+```js
+new TypeIt('#element', {
+    speed: 50
+}).type('I want to type this.').pause(500).type('And type some more!');
+```
 
 | Function        | Arguments   | Description
 | ------------- | ------------- | ------------- |
@@ -215,26 +222,32 @@ if(instance.isComplete) {
 ```
 
 ## Options
-You can modify the options for the plugin by passing in JSON upon instantiation.
+You can modify the options for the plugin by passing in JSON upon instantiation. It'll look something like this:
+
+```js
+new TypeIt('#element', {
+    strings: "Your default string.", // or, ["String #1", "String #2"]
+    speed: 100
+})
+```
 
 | Option        | Description   | Default Value
 | ------------- | ------------- | ------------- |
 | strings  | (string or array) The string(s) to be typed.       | 'Your default string.' |
 | speed     | (number in millseconds) The typing speed.             | 100  |
-| deleteSpeed     | (number in millseconds) The deletion speed. If left undefined, will be 1/3 of the type speed.           | undefined  |
+| deleteSpeed     | (number in millseconds) The deletion speed. If left null, will be 1/3 of the type speed.           | null |
 | lifeLike      | (boolean) Will make the typing pace irregular, as if a real person is doing it.  | true |
 | cursor    | (boolean) Show a blinking cursor at the end of the string(s).  | true  |
 | cursorSpeed    | (number in milliseconds) The blinking speed of the cursor.  | 1000  |
 | cursorChar    | (string) The character used for the cursor. HTML works too! | pipe |
 | breakLines    | (boolean) Choose whether you want multiple strings to be printed on top of each other (`breakLines: true`), or if you want each string to be deleted and replaced by the next one (`breakLines: false`).  | true  |
 | nextStringDelay    | (number in milliseconds or array) The amount of time (milliseconds) between typing the next string when multiple strings are defined. You may either pass a number in milliseconds, or an array of values. The first value will be used as the delay before a new string starts, and the second value will be used as the delay after a string ends. For example, passing `[1000, 2000]` will tell TypeIt to pause 1000ms before typing a new string, and wait 2000ms after a string has just completed. | 750 |
-| autoStart    | (boolean) Defines if the instance start typing automatically, whatever is the position of the element in the viewport. Turn this option to `false` if you want to tell the instance to start typing only when the element reach the viewport.  | true  |
+| autoStart    | (boolean) Determines if the instance will typing automatically on page load, or only when the target element becomes visible in the viewport. If you don't want instances far down on the page to begin until they're visible, set this option to `false.` | true  |
 | startDelete    | (boolean) Whether to begin instance by deleting strings inside element, and then typing what strings are defined via JSON or companion functions. | false  |
 | startDelay    | (number in milliseconds) The amount of time before the plugin begins typing after initalizing.  | 250  |
 | loop    | (boolean) Have your string or strings continuously loop after completing.  | false  |
 | loopDelay    | (number in milliseconds) The amount of time between looping over a string or set of strings again.  | 750  |
 | html    | (boolean) Handle strings as HTML, which will process tags and HTML entities. If 'false,' strings will be typed literally.  | true  |
-| callback    | (function) A function that executes after your typing has completed. | nuthin' |
 
 #### Changing Option Defaults
 If you're creating several instances of TypeIt on a page, and don't wish to repeatedly set an option of the same value for each of them, you can redefine the default options beforehand. Change the default value(s) before creating any instances, and you'll be set.
@@ -248,6 +261,46 @@ new TypeIt('#id', {
 });
 ```
 
+## Callback Methods
+Along all of these options, there are several callback method options you may use to trigger JavaScript at different points in time.
+
+```js
+new TypeIt('#id', {
+  strings: 'A string!'
+  afterString: function(step, queue, instance) {
+    //-- Execute your code here.
+  }
+});
+```
+
+### Passed Arguments
+
+Most callback methods will be passed the following arguments.
+
+| Argument | Description
+| ------------- | -------------
+| step | Each character, deletion, pause, line break, etc. are "steps" in a queue of actions that are run with each instance. Each step is an array with the method that's called, an argument for the method, and a tag if it's the first or last character in a string that's been queued to be typed. So, a typical step will look something like this: `[Function type, 'm']`.
+| queue | This is the rest of the queue that is yet to be typed. Each step in the queue is yet to be typed. Any steps that have already been typed will have been removed at this point.
+| instance | The instance of TypeIt itself.
+
+### Available Methods
+Remember, each of these methods is passed as an option into your instance when you create it:
+
+```js
+new TypeIt('#id', {
+  afterString: function (step, queue, instance) {},
+  afterComplete: function (instance) {}
+});
+```
+
+| Method | Description | Included Arguments
+| ------------- | ------------- | ------------- |
+| beforeString()  | Before a new string is about to be typed. For example, if you pass two strings in an array when you set up TypeIt, this callback method will execute twice. | step, queue, instance |
+| beforeStep() | Before each step in the queue is executed (including individual pauses, deletions, and new characters). | step, queue, instance
+| afterString() | After a string is typed. | step, queue, instance
+| afterStep() | After each step in the queue is executed. | step, queue, instance
+| afterComplete() | After the entire instance is complete. This runs when all of the steps in the queue have been executed. So, technically, if you let the instance run out of steps and then add new steps later, this method could run more than once. | instance
+
 ## CodePen Examples
 I have a few CodePen examples that illustrate how to do some interesting things with TypeIt.
 
diff --git a/dist/typeit.es.js b/dist/typeit.es.js
index 52afb826..a3a6cbfb 100644
--- a/dist/typeit.es.js
+++ b/dist/typeit.es.js
@@ -2,7 +2,7 @@
  *
  *   typeit - The most versatile animated typing utility on the planet.
  *   Author: Alex MacArthur <alex@macarthur.me> (https://macarthur.me)
- *   Version: v5.5.2
+ *   Version: v5.6.0
  *   URL: https://typeitjs.com
  *   License: GPL-2.0
  *
@@ -10,7 +10,7 @@
 window.TypeItDefaults = {
   strings: [],
   speed: 100,
-  deleteSpeed: undefined,
+  deleteSpeed: null,
   lifeLike: true,
   cursor: true,
   cursorChar: "|",
@@ -23,7 +23,12 @@ window.TypeItDefaults = {
   loopDelay: 750,
   html: true,
   autoStart: true,
-  callback: function callback() {}
+  callback: false,
+  beforeString: false,
+  afterString: false,
+  beforeStep: false,
+  afterStep: false,
+  afterComplete: false
 };
 
 function isVisible(element) {
@@ -60,6 +65,29 @@ function toArray(string) {
   return Array.isArray(string) ? string.slice(0) : string.split("<br>");
 }
 
+function groupHTMLTags(arr) {
+  var tPosition = [];
+  var tag = void 0;
+  var isEntity = false;
+
+  for (var j = 0; j < arr.length; j++) {
+    if (arr[j] === "<" || arr[j] === "&") {
+      tPosition[0] = j;
+      isEntity = arr[j] === "&";
+    }
+
+    if (arr[j] === ">" || arr[j] === ";" && isEntity) {
+      tPosition[1] = j;
+      j = 0;
+      tag = arr.slice(tPosition[0], tPosition[1] + 1).join("");
+      arr.splice(tPosition[0], tPosition[1] - tPosition[0] + 1, tag);
+      isEntity = false;
+    }
+  }
+
+  return arr;
+}
+
 var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) {
   return typeof obj;
 } : function (obj) {
@@ -101,9 +129,10 @@ var createClass = function () {
 }();
 
 var Instance = function () {
-  function Instance(element, id, options) {
+  function Instance(element, id, options, typeit) {
     classCallCheck(this, Instance);
 
+    this.typeit = typeit;
     this.timeouts = [];
     this.id = id;
     this.queue = [];
@@ -165,6 +194,7 @@ var Instance = function () {
 
       this.cursor();
       this.generateQueue();
+
       this.kickoff();
     }
   }, {
@@ -181,16 +211,17 @@ var Instance = function () {
       this.options.strings.forEach(function (string, index) {
         _this.queueString(string);
 
-        //-- This is not the last string,so insert a pause for between strings.
-        if (index + 1 < _this.options.strings.length) {
-          if (_this.options.breakLines) {
-            _this.queue.push([_this.break]);
-            _this.insertSplitPause(_this.queue.length);
-          } else {
-            _this.queueDeletions(string);
-            _this.insertSplitPause(_this.queue.length, string.length);
-          }
+        //-- This is the last string. Get outta here.
+        if (index + 1 === _this.options.strings.length) return;
+
+        if (_this.options.breakLines) {
+          _this.queue.push([_this.break]);
+          _this.insertSplitPause(_this.queue.length);
+          return;
         }
+
+        _this.queueDeletions(string);
+        _this.insertSplitPause(_this.queue.length, string.length);
       });
     }
 
@@ -248,10 +279,19 @@ var Instance = function () {
       //-- Shorten it by one character.
       string.splice(0, 1);
 
+      //-- If rake is true, this is the first time we've queued this string.
+      if (rake) {
+        this.queue[this.queue.length - 1].push("first-of-string");
+      }
+
       //-- If there's more to it, run again until fully printed.
       if (string.length) {
         this.queueString(string, false);
+        return;
       }
+
+      //-- End of string!
+      this.queue[this.queue.length - 1].push("last-of-string");
     }
 
     /**
@@ -374,11 +414,11 @@ var Instance = function () {
     value: function pause() {
       var _this3 = this;
 
-      var time = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : null;
+      var time = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;
 
       setTimeout(function () {
         _this3.next();
-      }, time === null ? this.options.nextStringDelay.total : time);
+      }, time ? time : this.options.nextStringDelay.total);
     }
 
     /*
@@ -398,24 +438,7 @@ var Instance = function () {
 
         //-- If we're parsing HTML, group tags into their own array items.
         if (_this4.options.html) {
-          var tPosition = [];
-          var tag = void 0;
-          var isEntity = false;
-
-          for (var j = 0; j < item.length; j++) {
-            if (item[j] === "<" || item[j] === "&") {
-              tPosition[0] = j;
-              isEntity = item[j] === "&";
-            }
-
-            if (item[j] === ">" || item[j] === ";" && isEntity) {
-              tPosition[1] = j;
-              j = 0;
-              tag = item.slice(tPosition[0], tPosition[1] + 1).join("");
-              item.splice(tPosition[0], tPosition[1] - tPosition[0] + 1, tag);
-              isEntity = false;
-            }
-          }
+          return groupHTMLTags(item);
         }
 
         return item;
@@ -480,7 +503,7 @@ var Instance = function () {
     key: "setPace",
     value: function setPace() {
       var typeSpeed = this.options.speed;
-      var deleteSpeed = this.options.deleteSpeed !== undefined ? this.options.deleteSpeed : this.options.speed / 3;
+      var deleteSpeed = this.options.deleteSpeed !== null ? this.options.deleteSpeed : this.options.speed / 3;
       var typeRange = typeSpeed / 2;
       var deleteRange = deleteSpeed / 2;
 
@@ -499,6 +522,7 @@ var Instance = function () {
 
         var textArray = _this6.elementContainer.innerHTML.split("");
 
+        //-- Cut the array by a character.
         for (var n = textArray.length - 1; n > -1; n--) {
           if ((textArray[n] === ">" || textArray[n] === ";") && _this6.options.html) {
             for (var o = n; o > -1; o--) {
@@ -565,7 +589,7 @@ var Instance = function () {
     }
 
     /*
-      Empty the existing text, clearing it instantly.
+    * Empty the existing text, clearing it instantly.
     */
 
   }, {
@@ -585,13 +609,38 @@ var Instance = function () {
 
       //-- We haven't reached the end of the queue, go again.
       if (this.queue.length > 0) {
-        var thisStep = this.queue[0];
-        this.queue.shift();
-        thisStep[0].call(this, thisStep[1]);
+        this.step = this.queue.shift();
+
+        if (this.step[2] === "first-of-string" && this.options.beforeString) {
+          this.options.beforeString(this.step, this.queue, this.typeit);
+        }
+
+        if (this.options.beforeStep) {
+          this.options.beforeStep(this.step, this.queue, this.typeit);
+        }
+
+        //-- Execute this step!
+        this.step[0].call(this, this.step[1], this.step[2]);
+
+        if (this.step[2] === "last-of-string" && this.options.afterString) {
+          this.options.afterString(this.step, this.queue, this.typeit);
+        }
+
+        if (this.options.afterStep) {
+          this.options.afterStep(this.step, this.queue, this.typeit);
+        }
+
         return;
       }
 
-      this.options.callback();
+      //-- @todo: Remove in next major release.
+      if (this.options.callback) {
+        this.options.callback();
+      }
+
+      if (this.options.afterComplete) {
+        this.options.afterComplete(this.step, this.typeit);
+      }
 
       if (this.options.loop) {
         this.queueDeletions(this.elementContainer.innerHTML);
@@ -600,9 +649,11 @@ var Instance = function () {
         setTimeout(function () {
           _this7.next();
         }, this.options.loopDelay / 2);
-      } else {
-        this.isComplete = true;
+
+        return;
       }
+
+      this.isComplete = true;
     }
   }]);
   return Instance;
@@ -646,7 +697,7 @@ var TypeIt = function () {
       var _this = this;
 
       [].slice.call(this.elements).forEach(function (element) {
-        _this.instances.push(new Instance(element, _this.id, _this.args));
+        _this.instances.push(new Instance(element, _this.id, _this.args, _this));
       });
     }
   }, {
@@ -766,6 +817,8 @@ var TypeIt = function () {
   }, {
     key: "isComplete",
     get: function get$$1() {
+      if (!this.instances.length) return false;
+
       return this.instances[0].isComplete;
     }
   }]);
diff --git a/dist/typeit.js b/dist/typeit.js
index 7a291ff7..29ff56b5 100644
--- a/dist/typeit.js
+++ b/dist/typeit.js
@@ -2,7 +2,7 @@
  *
  *   typeit - The most versatile animated typing utility on the planet.
  *   Author: Alex MacArthur <alex@macarthur.me> (https://macarthur.me)
- *   Version: v5.5.2
+ *   Version: v5.6.0
  *   URL: https://typeitjs.com
  *   License: GPL-2.0
  *
@@ -16,7 +16,7 @@
 window.TypeItDefaults = {
   strings: [],
   speed: 100,
-  deleteSpeed: undefined,
+  deleteSpeed: null,
   lifeLike: true,
   cursor: true,
   cursorChar: "|",
@@ -29,7 +29,12 @@ window.TypeItDefaults = {
   loopDelay: 750,
   html: true,
   autoStart: true,
-  callback: function callback() {}
+  callback: false,
+  beforeString: false,
+  afterString: false,
+  beforeStep: false,
+  afterStep: false,
+  afterComplete: false
 };
 
 function isVisible(element) {
@@ -66,6 +71,29 @@ function toArray(string) {
   return Array.isArray(string) ? string.slice(0) : string.split("<br>");
 }
 
+function groupHTMLTags(arr) {
+  var tPosition = [];
+  var tag = void 0;
+  var isEntity = false;
+
+  for (var j = 0; j < arr.length; j++) {
+    if (arr[j] === "<" || arr[j] === "&") {
+      tPosition[0] = j;
+      isEntity = arr[j] === "&";
+    }
+
+    if (arr[j] === ">" || arr[j] === ";" && isEntity) {
+      tPosition[1] = j;
+      j = 0;
+      tag = arr.slice(tPosition[0], tPosition[1] + 1).join("");
+      arr.splice(tPosition[0], tPosition[1] - tPosition[0] + 1, tag);
+      isEntity = false;
+    }
+  }
+
+  return arr;
+}
+
 var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) {
   return typeof obj;
 } : function (obj) {
@@ -107,9 +135,10 @@ var createClass = function () {
 }();
 
 var Instance = function () {
-  function Instance(element, id, options) {
+  function Instance(element, id, options, typeit) {
     classCallCheck(this, Instance);
 
+    this.typeit = typeit;
     this.timeouts = [];
     this.id = id;
     this.queue = [];
@@ -171,6 +200,7 @@ var Instance = function () {
 
       this.cursor();
       this.generateQueue();
+
       this.kickoff();
     }
   }, {
@@ -187,16 +217,17 @@ var Instance = function () {
       this.options.strings.forEach(function (string, index) {
         _this.queueString(string);
 
-        //-- This is not the last string,so insert a pause for between strings.
-        if (index + 1 < _this.options.strings.length) {
-          if (_this.options.breakLines) {
-            _this.queue.push([_this.break]);
-            _this.insertSplitPause(_this.queue.length);
-          } else {
-            _this.queueDeletions(string);
-            _this.insertSplitPause(_this.queue.length, string.length);
-          }
+        //-- This is the last string. Get outta here.
+        if (index + 1 === _this.options.strings.length) return;
+
+        if (_this.options.breakLines) {
+          _this.queue.push([_this.break]);
+          _this.insertSplitPause(_this.queue.length);
+          return;
         }
+
+        _this.queueDeletions(string);
+        _this.insertSplitPause(_this.queue.length, string.length);
       });
     }
 
@@ -254,10 +285,19 @@ var Instance = function () {
       //-- Shorten it by one character.
       string.splice(0, 1);
 
+      //-- If rake is true, this is the first time we've queued this string.
+      if (rake) {
+        this.queue[this.queue.length - 1].push("first-of-string");
+      }
+
       //-- If there's more to it, run again until fully printed.
       if (string.length) {
         this.queueString(string, false);
+        return;
       }
+
+      //-- End of string!
+      this.queue[this.queue.length - 1].push("last-of-string");
     }
 
     /**
@@ -380,11 +420,11 @@ var Instance = function () {
     value: function pause() {
       var _this3 = this;
 
-      var time = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : null;
+      var time = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;
 
       setTimeout(function () {
         _this3.next();
-      }, time === null ? this.options.nextStringDelay.total : time);
+      }, time ? time : this.options.nextStringDelay.total);
     }
 
     /*
@@ -404,24 +444,7 @@ var Instance = function () {
 
         //-- If we're parsing HTML, group tags into their own array items.
         if (_this4.options.html) {
-          var tPosition = [];
-          var tag = void 0;
-          var isEntity = false;
-
-          for (var j = 0; j < item.length; j++) {
-            if (item[j] === "<" || item[j] === "&") {
-              tPosition[0] = j;
-              isEntity = item[j] === "&";
-            }
-
-            if (item[j] === ">" || item[j] === ";" && isEntity) {
-              tPosition[1] = j;
-              j = 0;
-              tag = item.slice(tPosition[0], tPosition[1] + 1).join("");
-              item.splice(tPosition[0], tPosition[1] - tPosition[0] + 1, tag);
-              isEntity = false;
-            }
-          }
+          return groupHTMLTags(item);
         }
 
         return item;
@@ -486,7 +509,7 @@ var Instance = function () {
     key: "setPace",
     value: function setPace() {
       var typeSpeed = this.options.speed;
-      var deleteSpeed = this.options.deleteSpeed !== undefined ? this.options.deleteSpeed : this.options.speed / 3;
+      var deleteSpeed = this.options.deleteSpeed !== null ? this.options.deleteSpeed : this.options.speed / 3;
       var typeRange = typeSpeed / 2;
       var deleteRange = deleteSpeed / 2;
 
@@ -505,6 +528,7 @@ var Instance = function () {
 
         var textArray = _this6.elementContainer.innerHTML.split("");
 
+        //-- Cut the array by a character.
         for (var n = textArray.length - 1; n > -1; n--) {
           if ((textArray[n] === ">" || textArray[n] === ";") && _this6.options.html) {
             for (var o = n; o > -1; o--) {
@@ -571,7 +595,7 @@ var Instance = function () {
     }
 
     /*
-      Empty the existing text, clearing it instantly.
+    * Empty the existing text, clearing it instantly.
     */
 
   }, {
@@ -591,13 +615,38 @@ var Instance = function () {
 
       //-- We haven't reached the end of the queue, go again.
       if (this.queue.length > 0) {
-        var thisStep = this.queue[0];
-        this.queue.shift();
-        thisStep[0].call(this, thisStep[1]);
+        this.step = this.queue.shift();
+
+        if (this.step[2] === "first-of-string" && this.options.beforeString) {
+          this.options.beforeString(this.step, this.queue, this.typeit);
+        }
+
+        if (this.options.beforeStep) {
+          this.options.beforeStep(this.step, this.queue, this.typeit);
+        }
+
+        //-- Execute this step!
+        this.step[0].call(this, this.step[1], this.step[2]);
+
+        if (this.step[2] === "last-of-string" && this.options.afterString) {
+          this.options.afterString(this.step, this.queue, this.typeit);
+        }
+
+        if (this.options.afterStep) {
+          this.options.afterStep(this.step, this.queue, this.typeit);
+        }
+
         return;
       }
 
-      this.options.callback();
+      //-- @todo: Remove in next major release.
+      if (this.options.callback) {
+        this.options.callback();
+      }
+
+      if (this.options.afterComplete) {
+        this.options.afterComplete(this.step, this.typeit);
+      }
 
       if (this.options.loop) {
         this.queueDeletions(this.elementContainer.innerHTML);
@@ -606,9 +655,11 @@ var Instance = function () {
         setTimeout(function () {
           _this7.next();
         }, this.options.loopDelay / 2);
-      } else {
-        this.isComplete = true;
+
+        return;
       }
+
+      this.isComplete = true;
     }
   }]);
   return Instance;
@@ -652,7 +703,7 @@ var TypeIt = function () {
       var _this = this;
 
       [].slice.call(this.elements).forEach(function (element) {
-        _this.instances.push(new Instance(element, _this.id, _this.args));
+        _this.instances.push(new Instance(element, _this.id, _this.args, _this));
       });
     }
   }, {
@@ -772,6 +823,8 @@ var TypeIt = function () {
   }, {
     key: "isComplete",
     get: function get$$1() {
+      if (!this.instances.length) return false;
+
       return this.instances[0].isComplete;
     }
   }]);
diff --git a/dist/typeit.min.js b/dist/typeit.min.js
index 9a24618f..a0233846 100644
--- a/dist/typeit.min.js
+++ b/dist/typeit.min.js
@@ -2,9 +2,9 @@
  *
  *   typeit - The most versatile animated typing utility on the planet.
  *   Author: Alex MacArthur <alex@macarthur.me> (https://macarthur.me)
- *   Version: v5.5.2
+ *   Version: v5.6.0
  *   URL: https://typeitjs.com
  *   License: GPL-2.0
  *
  */
-!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?module.exports=t():"function"==typeof define&&define.amd?define(t):e.TypeIt=t()}(this,function(){"use strict";function e(e){var t=e.getBoundingClientRect();return!(t.right>window.innerWidth||t.bottom>window.innerHeight)&&!(t.top<0||t.left<0)}function t(e,t){return Math.abs(Math.random()*(e+t-(e-t))+(e-t))}function n(e,t){return 0===e.indexOf(t)}function i(e){return Array.isArray(e)?e.slice(0):e.split("<br>")}window.TypeItDefaults={strings:[],speed:100,deleteSpeed:void 0,lifeLike:!0,cursor:!0,cursorChar:"|",cursorSpeed:1e3,breakLines:!0,startDelay:250,startDelete:!1,nextStringDelay:750,loop:!1,loopDelay:750,html:!0,autoStart:!0,callback:function(){}};var s="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":typeof e},o=function(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")},r=function(){function e(e,t){for(var n=0;n<t.length;n++){var i=t[n];i.enumerable=i.enumerable||!1,i.configurable=!0,"value"in i&&(i.writable=!0),Object.defineProperty(e,i.key,i)}}return function(t,n,i){return n&&e(t.prototype,n),i&&e(t,i),t}}(),u=function(){function s(e,t,n){o(this,s),this.timeouts=[],this.id=t,this.queue=[],this.hasStarted=!1,this.isFrozen=!1,this.isComplete=!1,this.isInTag=!1,this.stringsToDelete="",this.style="display:inline;position:relative;font:inherit;color:inherit;",this.element=e,this.setOptions(n,window.TypeItDefaults,!1),this.setNextStringDelay(),this.init()}return r(s,[{key:"setNextStringDelay",value:function(){var e=Array.isArray(this.options.nextStringDelay),t=e?null:this.options.nextStringDelay/2;this.options.nextStringDelay={before:e?this.options.nextStringDelay[0]:t,after:e?this.options.nextStringDelay[1]:t,total:e?this.options.nextStringDelay.reduce(function(e,t){return e+t}):this.options.nextStringDelay}}},{key:"init",value:function(){this.checkElement(),this.options.strings=i(this.options.strings),this.options.strings=this.options.strings.map(function(e){return e.replace(/<\!--.*?-->/g,"")}),this.options.strings.length>=1&&""===this.options.strings[0]||(this.element.innerHTML='\n        <span style="'+this.style+'" class="ti-container"></span>\n      ',this.element.setAttribute("data-typeitid",this.id),this.elementContainer=this.element.querySelector("span"),this.options.startDelete&&(this.insert(this.stringsToDelete),this.queue.push([this.delete]),this.insertSplitPause(1)),this.cursor(),this.generateQueue(),this.kickoff())}},{key:"generateQueue",value:function(){var e=this,t=arguments.length>0&&void 0!==arguments[0]?arguments[0]:null;t=null===t?[this.pause,this.options.startDelay]:t,this.queue.push(t),this.options.strings.forEach(function(t,n){e.queueString(t),n+1<e.options.strings.length&&(e.options.breakLines?(e.queue.push([e.break]),e.insertSplitPause(e.queue.length)):(e.queueDeletions(t),e.insertSplitPause(e.queue.length,t.length)))})}},{key:"queueDeletions",value:function(){for(var e=arguments.length>0&&void 0!==arguments[0]?arguments[0]:null,t="string"==typeof e?e.length:e,n=0;n<t;n++)this.queue.push([this.delete,1])}},{key:"queueString",value:function(e){var t=!(arguments.length>1&&void 0!==arguments[1])||arguments[1];if(e){if(e=i(e),document.implementation.createHTMLDocument("").body.innerHTML=e,t&&(e=(e=this.rake(e))[0]),this.options.html&&n(e[0],"<")&&!n(e[0],"</")){var s=e[0].match(/\<(.*?)\>/),o=document.implementation.createHTMLDocument("");o.body.innerHTML="<"+s[1]+"></"+s[1]+">",this.queue.push([this.type,o.body.children[0]])}else this.queue.push([this.type,e[0]]);e.splice(0,1),e.length&&this.queueString(e,!1)}}},{key:"insertSplitPause",value:function(e){var t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:1;this.queue.splice(e,0,[this.pause,this.options.nextStringDelay.before]),this.queue.splice(e-t,0,[this.pause,this.options.nextStringDelay.after])}},{key:"kickoff",value:function(){if(this.options.autoStart)return this.hasStarted=!0,void this.next();if(e(this.element))return this.hasStarted=!0,void this.next();var t=this;window.addEventListener("scroll",function n(i){e(t.element)&&!t.hasStarted&&(t.hasStarted=!0,t.next(),i.currentTarget.removeEventListener(i.type,n))})}},{key:"cursor",value:function(){var e="visibility: hidden;";if(this.options.cursor){var t=document.createElement("style");t.id=this.id;var n="\n            @keyframes blink-"+this.id+" {\n              0% {opacity: 0}\n              49% {opacity: 0}\n              50% {opacity: 1}\n            }\n\n            [data-typeitid='"+this.id+"'] .ti-cursor {\n              animation: blink-"+this.id+" "+this.options.cursorSpeed/1e3+"s infinite;\n            }\n          ";t.appendChild(document.createTextNode(n)),document.head.appendChild(t),e=""}this.element.insertAdjacentHTML("beforeend",'<span style="'+this.style+e+'" class="ti-cursor">'+this.options.cursorChar+"</span>")}},{key:"insert",value:function(e){arguments.length>1&&void 0!==arguments[1]&&arguments[1]?this.elementContainer.lastChild.insertAdjacentHTML("beforeend",e):this.elementContainer.insertAdjacentHTML("beforeend",e),this.elementContainer.innerHTML=this.elementContainer.innerHTML.split("").join("")}},{key:"checkElement",value:function(){var e=this;[].slice.call(this.element.childNodes).forEach(function(t){void 0!==t.classList&&t.classList.contains("ti-container")&&(e.element.innerHTML="")}),!this.options.startDelete&&this.element.innerHTML.length>0?this.options.strings=this.element.innerHTML.trim():this.stringsToDelete=this.element.innerHTML}},{key:"break",value:function(){this.insert("<br>"),this.next()}},{key:"pause",value:function(){var e=this,t=arguments.length>0&&void 0!==arguments[0]?arguments[0]:null;setTimeout(function(){e.next()},null===t?this.options.nextStringDelay.total:t)}},{key:"rake",value:function(e){var t=this;return e.map(function(e){if(e=e.split(""),t.options.html)for(var n=[],i=void 0,s=!1,o=0;o<e.length;o++)"<"!==e[o]&&"&"!==e[o]||(n[0]=o,s="&"===e[o]),(">"===e[o]||";"===e[o]&&s)&&(n[1]=o,o=0,i=e.slice(n[0],n[1]+1).join(""),e.splice(n[0],n[1]-n[0]+1,i),s=!1);return e})}},{key:"type",value:function(e){var t=this;this.setPace(),this.timeouts[0]=setTimeout(function(){return"string"!=typeof e?(e.innerHTML="",t.elementContainer.appendChild(e),t.isInTag=!0,void t.next()):n(e,"</")?(t.isInTag=!1,void t.next()):(t.insert(e,t.isInTag),void t.next())},this.typePace)}},{key:"setOptions",value:function(e){var t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:null,n=!(arguments.length>2&&void 0!==arguments[2])||arguments[2],i={};for(var s in null===t&&(t=this.options),t)i[s]=t[s];for(var o in e)i[o]=e[o];this.options=i,n&&this.next()}},{key:"setPace",value:function(){var e=this.options.speed,n=void 0!==this.options.deleteSpeed?this.options.deleteSpeed:this.options.speed/3,i=e/2,s=n/2;this.typePace=this.options.lifeLike?t(e,i):e,this.deletePace=this.options.lifeLike?t(n,s):n}},{key:"delete",value:function(){var e=this,t=arguments.length>0&&void 0!==arguments[0]?arguments[0]:null;this.timeouts[1]=setTimeout(function(){e.setPace();for(var n=e.elementContainer.innerHTML.split(""),i=n.length-1;i>-1;i--){if(">"!==n[i]&&";"!==n[i]||!e.options.html){n.pop();break}for(var s=i;s>-1;s--){if("<br>"===n.slice(s-3,s+1).join("")){n.splice(s-3,4);break}if("&"===n[s]){n.splice(s,i-s+1);break}if("<"===n[s]&&">"!==n[s-1]){if(";"===n[s-1])for(var o=s-1;o>-1;o--)if("&"===n[o]){n.splice(o,s-o);break}n.splice(s-1,1);break}}break}if(e.elementContainer.innerHTML.indexOf("></")>-1)for(var r=e.elementContainer.innerHTML.indexOf("></")-2;r>=0;r--)if("<"===n[r]){n.splice(r,n.length-r);break}e.elementContainer.innerHTML=n.join("").replace(/<[^\/>][^>]*><\/[^>]+>/,""),null===t&&e.queue.unshift([e.delete,n.length]),t>1&&e.queue.unshift([e.delete,t-1]),e.next()},this.deletePace)}},{key:"empty",value:function(){this.elementContainer.innerHTML="",this.next()}},{key:"next",value:function(){var e=this;if(!this.isFrozen){if(this.queue.length>0){var t=this.queue[0];return this.queue.shift(),void t[0].call(this,t[1])}this.options.callback(),this.options.loop?(this.queueDeletions(this.elementContainer.innerHTML),this.generateQueue([this.pause,this.options.loopDelay/2]),setTimeout(function(){e.next()},this.options.loopDelay/2)):this.isComplete=!0}}}]),s}();return function(){function e(t,n){o(this,e),this.id=this.generateHash(),this.instances=[],this.elements=[],this.args=n,"object"===(void 0===t?"undefined":s(t))&&(void 0===t.length?this.elements.push(t):this.elements=t),"string"==typeof t&&(this.elements=document.querySelectorAll(t)),this.createInstances()}return r(e,[{key:"generateHash",value:function(){return Math.random().toString(36).substring(2,15)+Math.random().toString(36).substring(2,15)}},{key:"createInstances",value:function(){var e=this;[].slice.call(this.elements).forEach(function(t){e.instances.push(new u(t,e.id,e.args))})}},{key:"pushAction",value:function(e){var t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:null;this.instances.forEach(function(n){n.queue.push([n[e],t]),!0===n.isComplete&&n.next()})}},{key:"type",value:function(){var e=arguments.length>0&&void 0!==arguments[0]?arguments[0]:"";return this.instances.forEach(function(t){t.queueString(e),!0===t.isComplete&&t.next()}),this}},{key:"delete",value:function(){var e=arguments.length>0&&void 0!==arguments[0]?arguments[0]:null;return this.pushAction("delete",e),this}},{key:"freeze",value:function(){this.instances.forEach(function(e){e.isFrozen=!0})}},{key:"unfreeze",value:function(){this.instances.forEach(function(e){e.isFrozen&&(e.isFrozen=!1,e.next())})}},{key:"pause",value:function(){var e=arguments.length>0&&void 0!==arguments[0]?arguments[0]:null;return this.pushAction("pause",e),this}},{key:"destroy",value:function(){var e=!(arguments.length>0&&void 0!==arguments[0])||arguments[0];this.instances.forEach(function(t){t.timeouts=t.timeouts.map(function(e){return clearTimeout(e),null}),e&&t.element.removeChild(t.element.querySelector(".ti-cursor"))}),this.instances=[]}},{key:"empty",value:function(){return this.pushAction("empty"),this}},{key:"break",value:function(){return this.pushAction("break"),this}},{key:"options",value:function(e){return this.pushAction("setOptions",e),this}},{key:"isComplete",get:function(){return this.instances[0].isComplete}}]),e}()});
+!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?module.exports=e():"function"==typeof define&&define.amd?define(e):t.TypeIt=e()}(this,function(){"use strict";function n(t){var e=t.getBoundingClientRect();return!(e.right>window.innerWidth||e.bottom>window.innerHeight)&&!(e.top<0||e.left<0)}function o(t,e){return Math.abs(Math.random()*(t+e-(t-e))+(t-e))}function r(t,e){return 0===t.indexOf(e)}function u(t){return Array.isArray(t)?t.slice(0):t.split("<br>")}window.TypeItDefaults={strings:[],speed:100,deleteSpeed:null,lifeLike:!0,cursor:!0,cursorChar:"|",cursorSpeed:1e3,breakLines:!0,startDelay:250,startDelete:!1,nextStringDelay:750,loop:!1,loopDelay:750,html:!0,autoStart:!0,callback:!1,beforeString:!1,afterString:!1,beforeStep:!1,afterStep:!1,afterComplete:!1};var s="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(t){return typeof t}:function(t){return t&&"function"==typeof Symbol&&t.constructor===Symbol&&t!==Symbol.prototype?"symbol":typeof t},h=function(t,e){if(!(t instanceof e))throw new TypeError("Cannot call a class as a function")},t=function(){function n(t,e){for(var i=0;i<e.length;i++){var n=e[i];n.enumerable=n.enumerable||!1,n.configurable=!0,"value"in n&&(n.writable=!0),Object.defineProperty(t,n.key,n)}}return function(t,e,i){return e&&n(t.prototype,e),i&&n(t,i),t}}(),a=function(){function s(t,e,i,n){h(this,s),this.typeit=n,this.timeouts=[],this.id=e,this.queue=[],this.hasStarted=!1,this.isFrozen=!1,this.isComplete=!1,this.isInTag=!1,this.stringsToDelete="",this.style="display:inline;position:relative;font:inherit;color:inherit;",this.element=t,this.setOptions(i,window.TypeItDefaults,!1),this.setNextStringDelay(),this.init()}return t(s,[{key:"setNextStringDelay",value:function(){var t=Array.isArray(this.options.nextStringDelay),e=t?null:this.options.nextStringDelay/2;this.options.nextStringDelay={before:t?this.options.nextStringDelay[0]:e,after:t?this.options.nextStringDelay[1]:e,total:t?this.options.nextStringDelay.reduce(function(t,e){return t+e}):this.options.nextStringDelay}}},{key:"init",value:function(){this.checkElement(),this.options.strings=u(this.options.strings),this.options.strings=this.options.strings.map(function(t){return t.replace(/<\!--.*?-->/g,"")}),1<=this.options.strings.length&&""===this.options.strings[0]||(this.element.innerHTML='\n        <span style="'+this.style+'" class="ti-container"></span>\n      ',this.element.setAttribute("data-typeitid",this.id),this.elementContainer=this.element.querySelector("span"),this.options.startDelete&&(this.insert(this.stringsToDelete),this.queue.push([this.delete]),this.insertSplitPause(1)),this.cursor(),this.generateQueue(),this.kickoff())}},{key:"generateQueue",value:function(){var i=this,t=0<arguments.length&&void 0!==arguments[0]?arguments[0]:null;t=null===t?[this.pause,this.options.startDelay]:t,this.queue.push(t),this.options.strings.forEach(function(t,e){if(i.queueString(t),e+1!==i.options.strings.length){if(i.options.breakLines)return i.queue.push([i.break]),void i.insertSplitPause(i.queue.length);i.queueDeletions(t),i.insertSplitPause(i.queue.length,t.length)}})}},{key:"queueDeletions",value:function(){for(var t=0<arguments.length&&void 0!==arguments[0]?arguments[0]:null,e="string"==typeof t?t.length:t,i=0;i<e;i++)this.queue.push([this.delete,1])}},{key:"queueString",value:function(t){var e=!(1<arguments.length&&void 0!==arguments[1])||arguments[1];if(t){if(t=u(t),document.implementation.createHTMLDocument("").body.innerHTML=t,e&&(t=(t=this.rake(t))[0]),this.options.html&&r(t[0],"<")&&!r(t[0],"</")){var i=t[0].match(/\<(.*?)\>/),n=document.implementation.createHTMLDocument("");n.body.innerHTML="<"+i[1]+"></"+i[1]+">",this.queue.push([this.type,n.body.children[0]])}else this.queue.push([this.type,t[0]]);t.splice(0,1),e&&this.queue[this.queue.length-1].push("first-of-string"),t.length?this.queueString(t,!1):this.queue[this.queue.length-1].push("last-of-string")}}},{key:"insertSplitPause",value:function(t){var e=1<arguments.length&&void 0!==arguments[1]?arguments[1]:1;this.queue.splice(t,0,[this.pause,this.options.nextStringDelay.before]),this.queue.splice(t-e,0,[this.pause,this.options.nextStringDelay.after])}},{key:"kickoff",value:function(){if(this.options.autoStart)return this.hasStarted=!0,void this.next();if(n(this.element))return this.hasStarted=!0,void this.next();var i=this;window.addEventListener("scroll",function t(e){n(i.element)&&!i.hasStarted&&(i.hasStarted=!0,i.next(),e.currentTarget.removeEventListener(e.type,t))})}},{key:"cursor",value:function(){var t="visibility: hidden;";if(this.options.cursor){var e=document.createElement("style");e.id=this.id;var i="\n            @keyframes blink-"+this.id+" {\n              0% {opacity: 0}\n              49% {opacity: 0}\n              50% {opacity: 1}\n            }\n\n            [data-typeitid='"+this.id+"'] .ti-cursor {\n              animation: blink-"+this.id+" "+this.options.cursorSpeed/1e3+"s infinite;\n            }\n          ";e.appendChild(document.createTextNode(i)),document.head.appendChild(e),t=""}this.element.insertAdjacentHTML("beforeend",'<span style="'+this.style+t+'" class="ti-cursor">'+this.options.cursorChar+"</span>")}},{key:"insert",value:function(t){1<arguments.length&&void 0!==arguments[1]&&arguments[1]?this.elementContainer.lastChild.insertAdjacentHTML("beforeend",t):this.elementContainer.insertAdjacentHTML("beforeend",t),this.elementContainer.innerHTML=this.elementContainer.innerHTML.split("").join("")}},{key:"checkElement",value:function(){var e=this;[].slice.call(this.element.childNodes).forEach(function(t){void 0!==t.classList&&t.classList.contains("ti-container")&&(e.element.innerHTML="")}),!this.options.startDelete&&0<this.element.innerHTML.length?this.options.strings=this.element.innerHTML.trim():this.stringsToDelete=this.element.innerHTML}},{key:"break",value:function(){this.insert("<br>"),this.next()}},{key:"pause",value:function(){var t=this,e=0<arguments.length&&void 0!==arguments[0]&&arguments[0];setTimeout(function(){t.next()},e||this.options.nextStringDelay.total)}},{key:"rake",value:function(t){var e=this;return t.map(function(t){return t=t.split(""),e.options.html?function(t){for(var e=[],i=void 0,n=!1,s=0;s<t.length;s++)"<"!==t[s]&&"&"!==t[s]||(n="&"===t[e[0]=s]),(">"===t[s]||";"===t[s]&&n)&&(e[1]=s,s=0,i=t.slice(e[0],e[1]+1).join(""),t.splice(e[0],e[1]-e[0]+1,i),n=!1);return t}(t):t})}},{key:"type",value:function(t){var e=this;this.setPace(),this.timeouts[0]=setTimeout(function(){return"string"!=typeof t?(t.innerHTML="",e.elementContainer.appendChild(t),e.isInTag=!0):r(t,"</")?e.isInTag=!1:e.insert(t,e.isInTag),void e.next()},this.typePace)}},{key:"setOptions",value:function(t){var e=1<arguments.length&&void 0!==arguments[1]?arguments[1]:null,i=!(2<arguments.length&&void 0!==arguments[2])||arguments[2],n={};for(var s in null===e&&(e=this.options),e)n[s]=e[s];for(var o in t)n[o]=t[o];this.options=n,i&&this.next()}},{key:"setPace",value:function(){var t=this.options.speed,e=null!==this.options.deleteSpeed?this.options.deleteSpeed:this.options.speed/3,i=t/2,n=e/2;this.typePace=this.options.lifeLike?o(t,i):t,this.deletePace=this.options.lifeLike?o(e,n):e}},{key:"delete",value:function(){var o=this,r=0<arguments.length&&void 0!==arguments[0]?arguments[0]:null;this.timeouts[1]=setTimeout(function(){o.setPace();for(var t=o.elementContainer.innerHTML.split(""),e=t.length-1;-1<e;e--){if(">"!==t[e]&&";"!==t[e]||!o.options.html){t.pop();break}for(var i=e;-1<i;i--){if("<br>"===t.slice(i-3,i+1).join("")){t.splice(i-3,4);break}if("&"===t[i]){t.splice(i,e-i+1);break}if("<"===t[i]&&">"!==t[i-1]){if(";"===t[i-1])for(var n=i-1;-1<n;n--)if("&"===t[n]){t.splice(n,i-n);break}t.splice(i-1,1);break}}break}if(-1<o.elementContainer.innerHTML.indexOf("></"))for(var s=o.elementContainer.innerHTML.indexOf("></")-2;0<=s;s--)if("<"===t[s]){t.splice(s,t.length-s);break}o.elementContainer.innerHTML=t.join("").replace(/<[^\/>][^>]*><\/[^>]+>/,""),null===r&&o.queue.unshift([o.delete,t.length]),1<r&&o.queue.unshift([o.delete,r-1]),o.next()},this.deletePace)}},{key:"empty",value:function(){this.elementContainer.innerHTML="",this.next()}},{key:"next",value:function(){var t=this;if(!this.isFrozen){if(0<this.queue.length)return this.step=this.queue.shift(),"first-of-string"===this.step[2]&&this.options.beforeString&&this.options.beforeString(this.step,this.queue,this.typeit),this.options.beforeStep&&this.options.beforeStep(this.step,this.queue,this.typeit),this.step[0].call(this,this.step[1],this.step[2]),"last-of-string"===this.step[2]&&this.options.afterString&&this.options.afterString(this.step,this.queue,this.typeit),void(this.options.afterStep&&this.options.afterStep(this.step,this.queue,this.typeit));if(this.options.callback&&this.options.callback(),this.options.afterComplete&&this.options.afterComplete(this.step,this.typeit),this.options.loop)return this.queueDeletions(this.elementContainer.innerHTML),this.generateQueue([this.pause,this.options.loopDelay/2]),void setTimeout(function(){t.next()},this.options.loopDelay/2);this.isComplete=!0}}}]),s}();return function(){function i(t,e){h(this,i),this.id=this.generateHash(),this.instances=[],this.elements=[],this.args=e,"object"===(void 0===t?"undefined":s(t))&&(void 0===t.length?this.elements.push(t):this.elements=t),"string"==typeof t&&(this.elements=document.querySelectorAll(t)),this.createInstances()}return t(i,[{key:"generateHash",value:function(){return Math.random().toString(36).substring(2,15)+Math.random().toString(36).substring(2,15)}},{key:"createInstances",value:function(){var e=this;[].slice.call(this.elements).forEach(function(t){e.instances.push(new a(t,e.id,e.args,e))})}},{key:"pushAction",value:function(e){var i=1<arguments.length&&void 0!==arguments[1]?arguments[1]:null;this.instances.forEach(function(t){t.queue.push([t[e],i]),!0===t.isComplete&&t.next()})}},{key:"type",value:function(){var e=0<arguments.length&&void 0!==arguments[0]?arguments[0]:"";return this.instances.forEach(function(t){t.queueString(e),!0===t.isComplete&&t.next()}),this}},{key:"delete",value:function(){var t=0<arguments.length&&void 0!==arguments[0]?arguments[0]:null;return this.pushAction("delete",t),this}},{key:"freeze",value:function(){this.instances.forEach(function(t){t.isFrozen=!0})}},{key:"unfreeze",value:function(){this.instances.forEach(function(t){t.isFrozen&&(t.isFrozen=!1,t.next())})}},{key:"pause",value:function(){var t=0<arguments.length&&void 0!==arguments[0]?arguments[0]:null;return this.pushAction("pause",t),this}},{key:"destroy",value:function(){var e=!(0<arguments.length&&void 0!==arguments[0])||arguments[0];this.instances.forEach(function(t){t.timeouts=t.timeouts.map(function(t){return clearTimeout(t),null}),e&&t.element.removeChild(t.element.querySelector(".ti-cursor"))}),this.instances=[]}},{key:"empty",value:function(){return this.pushAction("empty"),this}},{key:"break",value:function(){return this.pushAction("break"),this}},{key:"options",value:function(t){return this.pushAction("setOptions",t),this}},{key:"isComplete",get:function(){return!!this.instances.length&&this.instances[0].isComplete}}]),i}()});
diff --git a/package.json b/package.json
index b0addaed..169d2fe8 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "typeit",
-  "version": "5.5.2",
+  "version": "5.6.0",
   "description": "The most versatile animated typing utility on the planet.",
   "author": "Alex MacArthur <alex@macarthur.me> (https://macarthur.me)",
   "license": "GPL-2.0",
@@ -47,5 +47,8 @@
     "rollup": "^0.52.0",
     "rollup-plugin-babel": "^3.0.2",
     "rollup-plugin-uglify": "^2.0.1"
+  },
+  "dependencies": {
+    "jest": "^22.4.2"
   }
 }
diff --git a/src/defaults.js b/src/defaults.js
index 92716ccf..232b3211 100644
--- a/src/defaults.js
+++ b/src/defaults.js
@@ -1,7 +1,7 @@
 window.TypeItDefaults = {
   strings: [],
   speed: 100,
-  deleteSpeed: undefined,
+  deleteSpeed: null,
   lifeLike: true,
   cursor: true,
   cursorChar: "|",
@@ -14,5 +14,10 @@ window.TypeItDefaults = {
   loopDelay: 750,
   html: true,
   autoStart: true,
-  callback: function() {}
+  callback: false,
+  beforeString: false,
+  afterString: false,
+  beforeStep: false,
+  afterStep: false,
+  afterComplete: false
 };
diff --git a/src/instance.js b/src/instance.js
index 20f17d6b..10525475 100644
--- a/src/instance.js
+++ b/src/instance.js
@@ -1,6 +1,7 @@
 import "./defaults.js";
 import {
   isVisible,
+  groupHTMLTags,
   randomInRange,
   removeComments,
   startsWith,
@@ -8,7 +9,8 @@ import {
 } from "./utilities";
 
 export default class Instance {
-  constructor(element, id, options) {
+  constructor(element, id, options, typeit) {
+    this.typeit = typeit;
     this.timeouts = [];
     this.id = id;
     this.queue = [];
@@ -69,6 +71,7 @@ export default class Instance {
 
     this.cursor();
     this.generateQueue();
+
     this.kickoff();
   }
 
@@ -83,16 +86,17 @@ export default class Instance {
     this.options.strings.forEach((string, index) => {
       this.queueString(string);
 
-      //-- This is not the last string,so insert a pause for between strings.
-      if (index + 1 < this.options.strings.length) {
-        if (this.options.breakLines) {
-          this.queue.push([this.break]);
-          this.insertSplitPause(this.queue.length);
-        } else {
-          this.queueDeletions(string);
-          this.insertSplitPause(this.queue.length, string.length);
-        }
+      //-- This is the last string. Get outta here.
+      if (index + 1 === this.options.strings.length) return;
+
+      if (this.options.breakLines) {
+        this.queue.push([this.break]);
+        this.insertSplitPause(this.queue.length);
+        return;
       }
+
+      this.queueDeletions(string);
+      this.insertSplitPause(this.queue.length, string.length);
     });
   }
 
@@ -146,10 +150,19 @@ export default class Instance {
     //-- Shorten it by one character.
     string.splice(0, 1);
 
+    //-- If rake is true, this is the first time we've queued this string.
+    if (rake) {
+      this.queue[this.queue.length - 1].push("first-of-string");
+    }
+
     //-- If there's more to it, run again until fully printed.
     if (string.length) {
       this.queueString(string, false);
+      return;
     }
+
+    //-- End of string!
+    this.queue[this.queue.length - 1].push("last-of-string");
   }
 
   /**
@@ -274,10 +287,10 @@ export default class Instance {
     this.next();
   }
 
-  pause(time = null) {
+  pause(time = false) {
     setTimeout(() => {
       this.next();
-    }, time === null ? this.options.nextStringDelay.total : time);
+    }, time ? time : this.options.nextStringDelay.total);
   }
 
   /*
@@ -292,24 +305,7 @@ export default class Instance {
 
       //-- If we're parsing HTML, group tags into their own array items.
       if (this.options.html) {
-        let tPosition = [];
-        let tag;
-        let isEntity = false;
-
-        for (let j = 0; j < item.length; j++) {
-          if (item[j] === "<" || item[j] === "&") {
-            tPosition[0] = j;
-            isEntity = item[j] === "&";
-          }
-
-          if (item[j] === ">" || (item[j] === ";" && isEntity)) {
-            tPosition[1] = j;
-            j = 0;
-            tag = item.slice(tPosition[0], tPosition[1] + 1).join("");
-            item.splice(tPosition[0], tPosition[1] - tPosition[0] + 1, tag);
-            isEntity = false;
-          }
-        }
+        return groupHTMLTags(item);
       }
 
       return item;
@@ -367,7 +363,7 @@ export default class Instance {
   setPace() {
     let typeSpeed = this.options.speed;
     let deleteSpeed =
-      this.options.deleteSpeed !== undefined
+      this.options.deleteSpeed !== null
         ? this.options.deleteSpeed
         : this.options.speed / 3;
     let typeRange = typeSpeed / 2;
@@ -387,8 +383,6 @@ export default class Instance {
 
       let textArray = this.elementContainer.innerHTML.split("");
 
-      let amount = chars + 1;
-
       //-- Cut the array by a character.
       for (let n = textArray.length - 1; n > -1; n--) {
         if (
@@ -465,7 +459,7 @@ export default class Instance {
   }
 
   /*
-    Empty the existing text, clearing it instantly.
+  * Empty the existing text, clearing it instantly.
   */
   empty() {
     this.elementContainer.innerHTML = "";
@@ -479,13 +473,38 @@ export default class Instance {
 
     //-- We haven't reached the end of the queue, go again.
     if (this.queue.length > 0) {
-      let thisStep = this.queue[0];
-      this.queue.shift();
-      thisStep[0].call(this, thisStep[1]);
+      this.step = this.queue.shift();
+
+      if (this.step[2] === "first-of-string" && this.options.beforeString) {
+        this.options.beforeString(this.step, this.queue, this.typeit);
+      }
+
+      if (this.options.beforeStep) {
+        this.options.beforeStep(this.step, this.queue, this.typeit);
+      }
+
+      //-- Execute this step!
+      this.step[0].call(this, this.step[1], this.step[2]);
+
+      if (this.step[2] === "last-of-string" && this.options.afterString) {
+        this.options.afterString(this.step, this.queue, this.typeit);
+      }
+
+      if (this.options.afterStep) {
+        this.options.afterStep(this.step, this.queue, this.typeit);
+      }
+
       return;
     }
 
-    this.options.callback();
+    //-- @todo: Remove in next major release.
+    if (this.options.callback) {
+      this.options.callback();
+    }
+
+    if (this.options.afterComplete) {
+      this.options.afterComplete(this.step, this.typeit);
+    }
 
     if (this.options.loop) {
       this.queueDeletions(this.elementContainer.innerHTML);
@@ -494,8 +513,10 @@ export default class Instance {
       setTimeout(() => {
         this.next();
       }, this.options.loopDelay / 2);
-    } else {
-      this.isComplete = true;
+
+      return;
     }
+
+    this.isComplete = true;
   }
 }
diff --git a/src/typeit.js b/src/typeit.js
index aee8a190..06138b3c 100644
--- a/src/typeit.js
+++ b/src/typeit.js
@@ -26,6 +26,8 @@ export default class TypeIt {
   }
 
   get isComplete() {
+    if (!this.instances.length) return false;
+
     return this.instances[0].isComplete;
   }
 
@@ -42,7 +44,7 @@ export default class TypeIt {
 
   createInstances() {
     [].slice.call(this.elements).forEach(element => {
-      this.instances.push(new Instance(element, this.id, this.args));
+      this.instances.push(new Instance(element, this.id, this.args, this));
     });
   }
 
diff --git a/src/utilities.js b/src/utilities.js
index 55c97473..9cc80490 100644
--- a/src/utilities.js
+++ b/src/utilities.js
@@ -36,3 +36,26 @@ export function startsWith(string, search) {
 export function toArray(string) {
   return Array.isArray(string) ? string.slice(0) : string.split("<br>");
 }
+
+export function groupHTMLTags(arr) {
+  let tPosition = [];
+  let tag;
+  let isEntity = false;
+
+  for (let j = 0; j < arr.length; j++) {
+    if (arr[j] === "<" || arr[j] === "&") {
+      tPosition[0] = j;
+      isEntity = arr[j] === "&";
+    }
+
+    if (arr[j] === ">" || (arr[j] === ";" && isEntity)) {
+      tPosition[1] = j;
+      j = 0;
+      tag = arr.slice(tPosition[0], tPosition[1] + 1).join("");
+      arr.splice(tPosition[0], tPosition[1] - tPosition[0] + 1, tag);
+      isEntity = false;
+    }
+  }
+
+  return arr;
+}
diff --git a/tests/base.test.js b/tests/base.test.js
index f612ca01..50e843f4 100644
--- a/tests/base.test.js
+++ b/tests/base.test.js
@@ -78,3 +78,21 @@ test("Redefines defaults correctly.", () => {
   expect(instance.instances[0].options.speed).toEqual(25);
   expect(instance.instances[0].options.speed).not.toEqual(26);
 });
+
+test("Typing doesn't end with a break tag.", () => {
+  jest.useFakeTimers();
+
+  document.body.innerHTML = `<div>'
+    <span id="element"></span>
+  </div>`;
+
+  const instance = new TypeIt("#element", {
+    strings: ["One string.", "Two string", "Three string."]
+  });
+
+  jest.runAllTimers();
+
+  expect(
+    instance.instances[0].elementContainer.innerHTML.endsWith("<br>")
+  ).not.toBe(true);
+});
diff --git a/tests/callback.test.js b/tests/callback.test.js
new file mode 100644
index 00000000..a1e6c8a0
--- /dev/null
+++ b/tests/callback.test.js
@@ -0,0 +1,163 @@
+import TypeIt from "../src/typeit";
+
+test("beforeString() callback works.", () => {
+  jest.useFakeTimers();
+
+  document.body.innerHTML = `
+    <div>
+      <span id="element"></span>
+    </div>
+  `;
+
+  let steps = [];
+
+  const mockCallback = jest.fn();
+
+  let instance = new TypeIt("#element", {
+    strings: ["First.", "Second."],
+    beforeString(step, queue, instance) {
+      mockCallback(step, queue, instance);
+    }
+  });
+
+  jest.runAllTimers();
+
+  expect(mockCallback.mock.calls.length).toBe(2);
+
+  expect(mockCallback.mock.calls[0][0][1]).toEqual("F");
+  expect(mockCallback.mock.calls[0][0][2]).toEqual("first-of-string");
+  expect(typeof mockCallback.mock.calls[0][2]).toEqual("object");
+
+  expect(mockCallback.mock.calls[1][0][1]).toEqual("S");
+  expect(mockCallback.mock.calls[1][0][2]).toEqual("first-of-string");
+  expect(typeof mockCallback.mock.calls[1][2]).toEqual("object");
+});
+
+test("beforeStep() callback works.", () => {
+  jest.useFakeTimers();
+
+  document.body.innerHTML = `
+    <div>
+      <span id="element"></span>
+    </div>
+  `;
+
+  let steps = [];
+
+  const mockCallback = jest.fn();
+
+  let instance = new TypeIt("#element", {
+    strings: ["First.", "Second."],
+    beforeStep(step, queue, instance) {
+      mockCallback(step, queue, instance);
+    }
+  });
+
+  jest.runAllTimers();
+
+  expect(mockCallback.mock.calls.length).toBe(17);
+
+  //-- Check the 3rd step.
+  expect(mockCallback.mock.calls[2][0][1]).toEqual("i");
+  expect(mockCallback.mock.calls[2][0][2]).toEqual(undefined);
+  expect(typeof mockCallback.mock.calls[2][2]).toEqual("object");
+
+  //-- Check the 7th step.
+  expect(mockCallback.mock.calls[6][0][1]).toEqual(".");
+  expect(mockCallback.mock.calls[6][0][2]).toEqual("last-of-string");
+  expect(typeof mockCallback.mock.calls[6][2]).toEqual("object");
+});
+
+test("afterString() callback works.", () => {
+  jest.useFakeTimers();
+
+  document.body.innerHTML = `
+    <div>
+      <span id="element"></span>
+    </div>
+  `;
+
+  let steps = [];
+
+  const mockCallback = jest.fn();
+
+  let instance = new TypeIt("#element", {
+    strings: ["First.", "Second."],
+    afterString(step, queue, instance) {
+      mockCallback(step, queue, instance);
+    }
+  });
+
+  jest.runAllTimers();
+
+  expect(mockCallback.mock.calls.length).toBe(2);
+
+  expect(mockCallback.mock.calls[0][0][1]).toEqual(".");
+  expect(mockCallback.mock.calls[0][0][2]).toEqual("last-of-string");
+  expect(typeof mockCallback.mock.calls[0][2]).toEqual("object");
+
+  expect(mockCallback.mock.calls[1][0][1]).toEqual(".");
+  expect(mockCallback.mock.calls[1][0][2]).toEqual("last-of-string");
+  expect(typeof mockCallback.mock.calls[1][2]).toEqual("object");
+});
+
+test("afterStep() callback works.", () => {
+  jest.useFakeTimers();
+
+  document.body.innerHTML = `
+    <div>
+      <span id="element"></span>
+    </div>
+  `;
+
+  let steps = [];
+
+  const mockCallback = jest.fn();
+
+  let instance = new TypeIt("#element", {
+    strings: ["First.", "Second."],
+    afterStep(step, queue, instance) {
+      mockCallback(step, queue, instance);
+    }
+  });
+
+  jest.runAllTimers();
+
+  expect(mockCallback.mock.calls.length).toBe(17);
+
+  //-- Check the 3rd step.
+  expect(mockCallback.mock.calls[2][0][1]).toEqual("i");
+  expect(mockCallback.mock.calls[2][0][2]).toEqual(undefined);
+  expect(typeof mockCallback.mock.calls[2][2]).toEqual("object");
+
+  //-- Check the 7th step.
+  expect(mockCallback.mock.calls[6][0][1]).toEqual(".");
+  expect(mockCallback.mock.calls[6][0][2]).toEqual("last-of-string");
+  expect(typeof mockCallback.mock.calls[6][2]).toEqual("object");
+});
+
+test("afterComplete() callback works.", () => {
+  jest.useFakeTimers();
+
+  document.body.innerHTML = `
+    <div>
+      <span id="element"></span>
+    </div>
+  `;
+
+  let steps = [];
+
+  const mockCallback = jest.fn();
+
+  let instance = new TypeIt("#element", {
+    strings: ["First.", "Second."],
+    afterComplete(instance) {
+      mockCallback(instance);
+    }
+  });
+
+  jest.runAllTimers();
+
+  expect(mockCallback.mock.calls.length).toBe(1);
+  expect(typeof mockCallback.mock.calls[0][0]).toBe("object");
+});
diff --git a/yarn.lock b/yarn.lock
index c5594bb0..41fcebc1 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2,7 +2,21 @@
 # yarn lockfile v1
 
 
-abab@^1.0.3:
+"@babel/code-frame@^7.0.0-beta.35":
+  version "7.0.0-beta.41"
+  resolved "https://registry.yarnpkg.com/@babel/code-frame/-/code-frame-7.0.0-beta.41.tgz#68845c10a895050ab643e869100bbcf294b64e09"
+  dependencies:
+    "@babel/highlight" "7.0.0-beta.41"
+
+"@babel/highlight@7.0.0-beta.41":
+  version "7.0.0-beta.41"
+  resolved "https://registry.yarnpkg.com/@babel/highlight/-/highlight-7.0.0-beta.41.tgz#7e1d634de3821e664bc8ad9688f240530d239b95"
+  dependencies:
+    chalk "^2.0.0"
+    esutils "^2.0.2"
+    js-tokens "^3.0.0"
+
+abab@^1.0.3, abab@^1.0.4:
   version "1.0.4"
   resolved "https://registry.yarnpkg.com/abab/-/abab-1.0.4.tgz#5faad9c2c07f60dd76770f71cf025b62a63cfd4e"
 
@@ -23,10 +37,20 @@ acorn-globals@^3.1.0:
   dependencies:
     acorn "^4.0.4"
 
+acorn-globals@^4.1.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/acorn-globals/-/acorn-globals-4.1.0.tgz#ab716025dbe17c54d3ef81d32ece2b2d99fe2538"
+  dependencies:
+    acorn "^5.0.0"
+
 acorn@^4.0.4:
   version "4.0.13"
   resolved "https://registry.yarnpkg.com/acorn/-/acorn-4.0.13.tgz#105495ae5361d697bd195c825192e1ad7f253787"
 
+acorn@^5.0.0, acorn@^5.3.0:
+  version "5.5.3"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-5.5.3.tgz#f473dd47e0277a08e28e9bec5aeeb04751f0b8c9"
+
 ajv@^4.9.1:
   version "4.11.8"
   resolved "https://registry.yarnpkg.com/ajv/-/ajv-4.11.8.tgz#82ffb02b29e662ae53bdc20af15947706739c536"
@@ -79,9 +103,9 @@ ansi-styles@^2.2.1:
   version "2.2.1"
   resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-2.2.1.tgz#b432dd3358b634cf75e1e4664368240533c1ddbe"
 
-ansi-styles@^3.2.0:
-  version "3.2.0"
-  resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-3.2.0.tgz#c159b8d5be0f9e5a6f346dab94f16ce022161b88"
+ansi-styles@^3.2.0, ansi-styles@^3.2.1:
+  version "3.2.1"
+  resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-3.2.1.tgz#41fbb20243e50b12be0f04b8dedbf07520ce841d"
   dependencies:
     color-convert "^1.9.0"
 
@@ -157,6 +181,10 @@ astral-regex@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/astral-regex/-/astral-regex-1.0.0.tgz#6c8c3fb827dd43ee3918f27b82782ab7658a6fd9"
 
+async-limiter@~1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/async-limiter/-/async-limiter-1.0.0.tgz#78faed8c3d074ab81f22b4e985d79e8738f720f8"
+
 async@^1.4.0:
   version "1.5.2"
   resolved "https://registry.yarnpkg.com/async/-/async-1.5.2.tgz#ec6a61ae56480c0c3cb241c95618e20892f9672a"
@@ -336,6 +364,13 @@ babel-jest@^21.2.0:
     babel-plugin-istanbul "^4.0.0"
     babel-preset-jest "^21.2.0"
 
+babel-jest@^22.4.1:
+  version "22.4.1"
+  resolved "https://registry.yarnpkg.com/babel-jest/-/babel-jest-22.4.1.tgz#ff53ebca45957347f27ff4666a31499fbb4c4ddd"
+  dependencies:
+    babel-plugin-istanbul "^4.1.5"
+    babel-preset-jest "^22.4.1"
+
 babel-messages@^6.23.0:
   version "6.23.0"
   resolved "https://registry.yarnpkg.com/babel-messages/-/babel-messages-6.23.0.tgz#f3cdf4703858035b2a2951c6ec5edf6c62f2630e"
@@ -354,7 +389,7 @@ babel-plugin-external-helpers@^6.22.0:
   dependencies:
     babel-runtime "^6.22.0"
 
-babel-plugin-istanbul@^4.0.0:
+babel-plugin-istanbul@^4.0.0, babel-plugin-istanbul@^4.1.5:
   version "4.1.5"
   resolved "https://registry.yarnpkg.com/babel-plugin-istanbul/-/babel-plugin-istanbul-4.1.5.tgz#6760cdd977f411d3e175bb064f2bc327d99b2b6e"
   dependencies:
@@ -366,6 +401,10 @@ babel-plugin-jest-hoist@^21.2.0:
   version "21.2.0"
   resolved "https://registry.yarnpkg.com/babel-plugin-jest-hoist/-/babel-plugin-jest-hoist-21.2.0.tgz#2cef637259bd4b628a6cace039de5fcd14dbb006"
 
+babel-plugin-jest-hoist@^22.4.1:
+  version "22.4.1"
+  resolved "https://registry.yarnpkg.com/babel-plugin-jest-hoist/-/babel-plugin-jest-hoist-22.4.1.tgz#d712fe5da8b6965f3191dacddbefdbdf4fb66d63"
+
 babel-plugin-syntax-async-functions@^6.8.0:
   version "6.13.0"
   resolved "https://registry.yarnpkg.com/babel-plugin-syntax-async-functions/-/babel-plugin-syntax-async-functions-6.13.0.tgz#cad9cad1191b5ad634bf30ae0872391e0647be95"
@@ -621,6 +660,13 @@ babel-preset-jest@^21.2.0:
     babel-plugin-jest-hoist "^21.2.0"
     babel-plugin-syntax-object-rest-spread "^6.13.0"
 
+babel-preset-jest@^22.4.1:
+  version "22.4.1"
+  resolved "https://registry.yarnpkg.com/babel-preset-jest/-/babel-preset-jest-22.4.1.tgz#efa2e5f5334242a9457a068452d7d09735db172a"
+  dependencies:
+    babel-plugin-jest-hoist "^22.4.1"
+    babel-plugin-syntax-object-rest-spread "^6.13.0"
+
 babel-register@^6.26.0:
   version "6.26.0"
   resolved "https://registry.yarnpkg.com/babel-register/-/babel-register-6.26.0.tgz#6ed021173e2fcb486d7acb45c6009a856f647071"
@@ -741,6 +787,10 @@ braces@^1.8.2:
     preserve "^0.2.0"
     repeat-element "^1.1.2"
 
+browser-process-hrtime@^0.1.2:
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/browser-process-hrtime/-/browser-process-hrtime-0.1.2.tgz#425d68a58d3447f02a04aa894187fce8af8b7b8e"
+
 browser-resolve@^1.11.2:
   version "1.11.2"
   resolved "https://registry.yarnpkg.com/browser-resolve/-/browser-resolve-1.11.2.tgz#8ff09b0a2c421718a1051c260b32e48f442938ce"
@@ -781,8 +831,8 @@ camelcase@^4.1.0:
   resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-4.1.0.tgz#d545635be1e33c542649c69173e5de6acfae34dd"
 
 caniuse-lite@^1.0.30000792:
-  version "1.0.30000810"
-  resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30000810.tgz#47585fffce0e9f3593a6feea4673b945424351d9"
+  version "1.0.30000813"
+  resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30000813.tgz#7b25e27fdfb8d133f3c932b01f77452140fcc6c9"
 
 caseless@~0.12.0:
   version "0.12.0"
@@ -815,13 +865,13 @@ chalk@^1.1.3:
     strip-ansi "^3.0.0"
     supports-color "^2.0.0"
 
-chalk@^2.0.1:
-  version "2.3.1"
-  resolved "https://registry.yarnpkg.com/chalk/-/chalk-2.3.1.tgz#523fe2678aec7b04e8041909292fe8b17059b796"
+chalk@^2.0.0, chalk@^2.0.1:
+  version "2.3.2"
+  resolved "https://registry.yarnpkg.com/chalk/-/chalk-2.3.2.tgz#250dc96b07491bfd601e648d66ddf5f60c7a5c65"
   dependencies:
-    ansi-styles "^3.2.0"
+    ansi-styles "^3.2.1"
     escape-string-regexp "^1.0.5"
-    supports-color "^5.2.0"
+    supports-color "^5.3.0"
 
 ci-info@^1.0.0:
   version "1.1.2"
@@ -843,6 +893,14 @@ cliui@^3.2.0:
     strip-ansi "^3.0.1"
     wrap-ansi "^2.0.0"
 
+cliui@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/cliui/-/cliui-4.0.0.tgz#743d4650e05f36d1ed2575b59638d87322bfbbcc"
+  dependencies:
+    string-width "^2.1.1"
+    strip-ansi "^4.0.0"
+    wrap-ansi "^2.0.0"
+
 co@^4.6.0:
   version "4.6.0"
   resolved "https://registry.yarnpkg.com/co/-/co-4.6.0.tgz#6ea6bdf3d853ae54ccb8e47bfa0bf3f9031fb184"
@@ -875,6 +933,10 @@ commander@~2.14.1:
   version "2.14.1"
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.14.1.tgz#2235123e37af8ca3c65df45b026dbd357b01b9aa"
 
+compare-versions@^3.1.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/compare-versions/-/compare-versions-3.1.0.tgz#43310256a5c555aaed4193c04d8f154cf9c6efd5"
+
 concat-map@0.0.1:
   version "0.0.1"
   resolved "https://registry.yarnpkg.com/concat-map/-/concat-map-0.0.1.tgz#d8a96bd77fd68df7793a73036a3ba0d5405d477b"
@@ -900,7 +962,7 @@ content-disposition@0.5.2:
   version "0.5.2"
   resolved "https://registry.yarnpkg.com/content-disposition/-/content-disposition-0.5.2.tgz#0cf68bb9ddf5f2be7961c3a85178cb85dba78cb4"
 
-content-type-parser@^1.0.1:
+content-type-parser@^1.0.1, content-type-parser@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/content-type-parser/-/content-type-parser-1.0.2.tgz#caabe80623e63638b2502fd4c7f12ff4ce2352e7"
 
@@ -998,6 +1060,13 @@ default-require-extensions@^1.0.0:
   dependencies:
     strip-bom "^2.0.0"
 
+define-properties@^1.1.2:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/define-properties/-/define-properties-1.1.2.tgz#83a73f2fea569898fb737193c8f873caf6d45c94"
+  dependencies:
+    foreach "^2.0.5"
+    object-keys "^1.0.8"
+
 delayed-stream@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/delayed-stream/-/delayed-stream-1.0.0.tgz#df3ae199acadfb7d440aaae0b29e2272b24ec619"
@@ -1028,9 +1097,19 @@ detect-libc@^1.0.2:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/detect-libc/-/detect-libc-1.0.3.tgz#fa137c4bd698edf55cd5cd02ac559f91a4c4ba9b"
 
+detect-newline@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/detect-newline/-/detect-newline-2.1.0.tgz#f41f1c10be4b00e87b5f13da680759f2c5bfd3e2"
+
 diff@^3.2.0:
-  version "3.4.0"
-  resolved "https://registry.yarnpkg.com/diff/-/diff-3.4.0.tgz#b1d85507daf3964828de54b37d0d73ba67dda56c"
+  version "3.5.0"
+  resolved "https://registry.yarnpkg.com/diff/-/diff-3.5.0.tgz#800c0dd1e0a8bfbc95835c202ad220fe317e5a12"
+
+domexception@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/domexception/-/domexception-1.0.1.tgz#937442644ca6a31261ef36e3ec677fe805582c90"
+  dependencies:
+    webidl-conversions "^4.0.2"
 
 ecc-jsbn@~0.1.1:
   version "0.1.1"
@@ -1043,8 +1122,8 @@ ee-first@1.1.1:
   resolved "https://registry.yarnpkg.com/ee-first/-/ee-first-1.1.1.tgz#590c61156b0ae2f4f0255732a158b266bc56b21d"
 
 electron-to-chromium@^1.3.30:
-  version "1.3.34"
-  resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.34.tgz#d93498f40391bb0c16a603d8241b9951404157ed"
+  version "1.3.36"
+  resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.36.tgz#0eabf71a9ebea9013fb1cc35a390e068624f27e8"
 
 encodeurl@~1.0.1:
   version "1.0.2"
@@ -1062,6 +1141,24 @@ error-ex@^1.2.0:
   dependencies:
     is-arrayish "^0.2.1"
 
+es-abstract@^1.5.1:
+  version "1.10.0"
+  resolved "https://registry.yarnpkg.com/es-abstract/-/es-abstract-1.10.0.tgz#1ecb36c197842a00d8ee4c2dfd8646bb97d60864"
+  dependencies:
+    es-to-primitive "^1.1.1"
+    function-bind "^1.1.1"
+    has "^1.0.1"
+    is-callable "^1.1.3"
+    is-regex "^1.0.4"
+
+es-to-primitive@^1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/es-to-primitive/-/es-to-primitive-1.1.1.tgz#45355248a88979034b6792e19bb81f2b7975dd0d"
+  dependencies:
+    is-callable "^1.1.1"
+    is-date-object "^1.0.1"
+    is-symbol "^1.0.1"
+
 escape-html@~1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/escape-html/-/escape-html-1.0.3.tgz#0258eae4d3d0c0974de1c169188ef0051d1d1988"
@@ -1070,7 +1167,7 @@ escape-string-regexp@^1.0.0, escape-string-regexp@^1.0.2, escape-string-regexp@^
   version "1.0.5"
   resolved "https://registry.yarnpkg.com/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz#1b61c0562190a8dff6ae3bb2cf0200ca130b86d4"
 
-escodegen@^1.6.1:
+escodegen@^1.6.1, escodegen@^1.9.0:
   version "1.9.1"
   resolved "https://registry.yarnpkg.com/escodegen/-/escodegen-1.9.1.tgz#dbae17ef96c8e4bedb1356f4504fa4cc2f7cb7e2"
   dependencies:
@@ -1123,6 +1220,10 @@ execa@^0.7.0:
     signal-exit "^3.0.0"
     strip-eof "^1.0.0"
 
+exit@^0.1.2:
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/exit/-/exit-0.1.2.tgz#0632638f8d877cc82107d30a0fff1a17cba1cd0c"
+
 expand-brackets@^0.1.4:
   version "0.1.5"
   resolved "https://registry.yarnpkg.com/expand-brackets/-/expand-brackets-0.1.5.tgz#df07284e342a807cd733ac5af72411e581d1177b"
@@ -1146,6 +1247,17 @@ expect@^21.2.1:
     jest-message-util "^21.2.1"
     jest-regex-util "^21.2.0"
 
+expect@^22.4.0:
+  version "22.4.0"
+  resolved "https://registry.yarnpkg.com/expect/-/expect-22.4.0.tgz#371edf1ae15b83b5bf5ec34b42f1584660a36c16"
+  dependencies:
+    ansi-styles "^3.2.0"
+    jest-diff "^22.4.0"
+    jest-get-type "^22.1.0"
+    jest-matcher-utils "^22.4.0"
+    jest-message-util "^22.4.0"
+    jest-regex-util "^22.1.0"
+
 express@^4.16.2:
   version "4.16.2"
   resolved "https://registry.yarnpkg.com/express/-/express-4.16.2.tgz#e35c6dfe2d64b7dca0a5cd4f21781be3299e076c"
@@ -1273,6 +1385,10 @@ for-own@^0.1.4:
   dependencies:
     for-in "^1.0.1"
 
+foreach@^2.0.5:
+  version "2.0.5"
+  resolved "https://registry.yarnpkg.com/foreach/-/foreach-2.0.5.tgz#0bee005018aeb260d0a3af3ae658dd0136ec1b99"
+
 forever-agent@~0.6.1:
   version "0.6.1"
   resolved "https://registry.yarnpkg.com/forever-agent/-/forever-agent-0.6.1.tgz#fbc71f0c41adeb37f96c577ad1ed42d8fdacca91"
@@ -1329,6 +1445,10 @@ fstream@^1.0.0, fstream@^1.0.10, fstream@^1.0.2:
     mkdirp ">=0.5 0"
     rimraf "2"
 
+function-bind@^1.0.2, function-bind@^1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/function-bind/-/function-bind-1.1.1.tgz#a56899d3ea3c9bab874bb9773b7c5ede92f4895d"
+
 gauge@~2.7.3:
   version "2.7.4"
   resolved "https://registry.yarnpkg.com/gauge/-/gauge-2.7.4.tgz#2c03405c7538c39d7eb37b317022e325fb018bf7"
@@ -1448,6 +1568,12 @@ has-unicode@^2.0.0:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/has-unicode/-/has-unicode-2.0.1.tgz#e0e6fe6a28cf51138855e086d1691e771de2a8b9"
 
+has@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/has/-/has-1.0.1.tgz#8461733f538b0837c9361e39a9ab9e9704dc2f28"
+  dependencies:
+    function-bind "^1.0.2"
+
 hawk@3.1.3, hawk@~3.1.3:
   version "3.1.3"
   resolved "https://registry.yarnpkg.com/hawk/-/hawk-3.1.3.tgz#078444bd7c1640b0fe540d2c9b73d59678e8e1c4"
@@ -1485,7 +1611,7 @@ hosted-git-info@^2.1.4:
   version "2.5.0"
   resolved "https://registry.yarnpkg.com/hosted-git-info/-/hosted-git-info-2.5.0.tgz#6d60e34b3abbc8313062c3b798ef8d901a07af3c"
 
-html-encoding-sniffer@^1.0.1:
+html-encoding-sniffer@^1.0.1, html-encoding-sniffer@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/html-encoding-sniffer/-/html-encoding-sniffer-1.0.2.tgz#e70d84b94da53aa375e11fe3a351be6642ca46f8"
   dependencies:
@@ -1520,6 +1646,13 @@ iconv-lite@0.4.19:
   version "0.4.19"
   resolved "https://registry.yarnpkg.com/iconv-lite/-/iconv-lite-0.4.19.tgz#f7468f60135f5e5dad3399c0a81be9a1603a082b"
 
+import-local@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/import-local/-/import-local-1.0.0.tgz#5e4ffdc03f4fe6c009c6729beb29631c2f8227bc"
+  dependencies:
+    pkg-dir "^2.0.0"
+    resolve-cwd "^2.0.0"
+
 imurmurhash@^0.1.4:
   version "0.1.4"
   resolved "https://registry.yarnpkg.com/imurmurhash/-/imurmurhash-0.1.4.tgz#9218b9b2b928a238b13dc4fb6b6d576f231453ea"
@@ -1567,12 +1700,20 @@ is-builtin-module@^1.0.0:
   dependencies:
     builtin-modules "^1.0.0"
 
+is-callable@^1.1.1, is-callable@^1.1.3:
+  version "1.1.3"
+  resolved "https://registry.yarnpkg.com/is-callable/-/is-callable-1.1.3.tgz#86eb75392805ddc33af71c92a0eedf74ee7604b2"
+
 is-ci@^1.0.10:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/is-ci/-/is-ci-1.1.0.tgz#247e4162e7860cebbdaf30b774d6b0ac7dcfe7a5"
   dependencies:
     ci-info "^1.0.0"
 
+is-date-object@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/is-date-object/-/is-date-object-1.0.1.tgz#9aa20eb6aeebbff77fbd33e74ca01b33581d3a16"
+
 is-dotfile@^1.0.0:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/is-dotfile/-/is-dotfile-1.0.3.tgz#a6a2f32ffd2dfb04f5ca25ecd0f6b83cf798a1e1"
@@ -1607,6 +1748,10 @@ is-fullwidth-code-point@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/is-fullwidth-code-point/-/is-fullwidth-code-point-2.0.0.tgz#a3b30a5c4f199183167aaab93beefae3ddfb654f"
 
+is-generator-fn@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/is-generator-fn/-/is-generator-fn-1.0.0.tgz#969d49e1bb3329f6bb7f09089be26578b2ddd46a"
+
 is-glob@^2.0.0, is-glob@^2.0.1:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/is-glob/-/is-glob-2.0.1.tgz#d096f926a3ded5600f3fdfd91198cb0888c2d863"
@@ -1633,10 +1778,20 @@ is-primitive@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/is-primitive/-/is-primitive-2.0.0.tgz#207bab91638499c07b2adf240a41a87210034575"
 
+is-regex@^1.0.4:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/is-regex/-/is-regex-1.0.4.tgz#5517489b547091b0930e095654ced25ee97e9491"
+  dependencies:
+    has "^1.0.1"
+
 is-stream@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/is-stream/-/is-stream-1.1.0.tgz#12d4a3dd4e68e0b79ceb8dbc84173ae80d91ca44"
 
+is-symbol@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/is-symbol/-/is-symbol-1.0.1.tgz#3cc59f00025194b6ab2e38dbae6689256b660572"
+
 is-typedarray@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/is-typedarray/-/is-typedarray-1.0.0.tgz#e479c80858df0c1b11ddda6940f96011fcda4a9a"
@@ -1679,16 +1834,55 @@ istanbul-api@^1.1.1:
     mkdirp "^0.5.1"
     once "^1.4.0"
 
+istanbul-api@^1.1.14:
+  version "1.3.1"
+  resolved "https://registry.yarnpkg.com/istanbul-api/-/istanbul-api-1.3.1.tgz#4c3b05d18c0016d1022e079b98dc82c40f488954"
+  dependencies:
+    async "^2.1.4"
+    compare-versions "^3.1.0"
+    fileset "^2.0.2"
+    istanbul-lib-coverage "^1.2.0"
+    istanbul-lib-hook "^1.2.0"
+    istanbul-lib-instrument "^1.10.1"
+    istanbul-lib-report "^1.1.4"
+    istanbul-lib-source-maps "^1.2.4"
+    istanbul-reports "^1.3.0"
+    js-yaml "^3.7.0"
+    mkdirp "^0.5.1"
+    once "^1.4.0"
+
 istanbul-lib-coverage@^1.0.1, istanbul-lib-coverage@^1.1.2:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/istanbul-lib-coverage/-/istanbul-lib-coverage-1.1.2.tgz#4113c8ff6b7a40a1ef7350b01016331f63afde14"
 
+istanbul-lib-coverage@^1.1.1, istanbul-lib-coverage@^1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/istanbul-lib-coverage/-/istanbul-lib-coverage-1.2.0.tgz#f7d8f2e42b97e37fe796114cb0f9d68b5e3a4341"
+
 istanbul-lib-hook@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/istanbul-lib-hook/-/istanbul-lib-hook-1.1.0.tgz#8538d970372cb3716d53e55523dd54b557a8d89b"
   dependencies:
     append-transform "^0.4.0"
 
+istanbul-lib-hook@^1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/istanbul-lib-hook/-/istanbul-lib-hook-1.2.0.tgz#ae556fd5a41a6e8efa0b1002b1e416dfeaf9816c"
+  dependencies:
+    append-transform "^0.4.0"
+
+istanbul-lib-instrument@^1.10.1, istanbul-lib-instrument@^1.8.0:
+  version "1.10.1"
+  resolved "https://registry.yarnpkg.com/istanbul-lib-instrument/-/istanbul-lib-instrument-1.10.1.tgz#724b4b6caceba8692d3f1f9d0727e279c401af7b"
+  dependencies:
+    babel-generator "^6.18.0"
+    babel-template "^6.16.0"
+    babel-traverse "^6.18.0"
+    babel-types "^6.18.0"
+    babylon "^6.18.0"
+    istanbul-lib-coverage "^1.2.0"
+    semver "^5.3.0"
+
 istanbul-lib-instrument@^1.4.2, istanbul-lib-instrument@^1.7.5, istanbul-lib-instrument@^1.9.2:
   version "1.9.2"
   resolved "https://registry.yarnpkg.com/istanbul-lib-instrument/-/istanbul-lib-instrument-1.9.2.tgz#84905bf47f7e0b401d6b840da7bad67086b4aab6"
@@ -1710,7 +1904,16 @@ istanbul-lib-report@^1.1.3:
     path-parse "^1.0.5"
     supports-color "^3.1.2"
 
-istanbul-lib-source-maps@^1.1.0, istanbul-lib-source-maps@^1.2.3:
+istanbul-lib-report@^1.1.4:
+  version "1.1.4"
+  resolved "https://registry.yarnpkg.com/istanbul-lib-report/-/istanbul-lib-report-1.1.4.tgz#e886cdf505c4ebbd8e099e4396a90d0a28e2acb5"
+  dependencies:
+    istanbul-lib-coverage "^1.2.0"
+    mkdirp "^0.5.1"
+    path-parse "^1.0.5"
+    supports-color "^3.1.2"
+
+istanbul-lib-source-maps@^1.1.0, istanbul-lib-source-maps@^1.2.1, istanbul-lib-source-maps@^1.2.3:
   version "1.2.3"
   resolved "https://registry.yarnpkg.com/istanbul-lib-source-maps/-/istanbul-lib-source-maps-1.2.3.tgz#20fb54b14e14b3fb6edb6aca3571fd2143db44e6"
   dependencies:
@@ -1720,18 +1923,40 @@ istanbul-lib-source-maps@^1.1.0, istanbul-lib-source-maps@^1.2.3:
     rimraf "^2.6.1"
     source-map "^0.5.3"
 
+istanbul-lib-source-maps@^1.2.4:
+  version "1.2.4"
+  resolved "https://registry.yarnpkg.com/istanbul-lib-source-maps/-/istanbul-lib-source-maps-1.2.4.tgz#cc7ccad61629f4efff8e2f78adb8c522c9976ec7"
+  dependencies:
+    debug "^3.1.0"
+    istanbul-lib-coverage "^1.2.0"
+    mkdirp "^0.5.1"
+    rimraf "^2.6.1"
+    source-map "^0.5.3"
+
 istanbul-reports@^1.1.4:
   version "1.1.4"
   resolved "https://registry.yarnpkg.com/istanbul-reports/-/istanbul-reports-1.1.4.tgz#5ccba5e22b7b5a5d91d5e0a830f89be334bf97bd"
   dependencies:
     handlebars "^4.0.3"
 
+istanbul-reports@^1.3.0:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/istanbul-reports/-/istanbul-reports-1.3.0.tgz#2f322e81e1d9520767597dca3c20a0cce89a3554"
+  dependencies:
+    handlebars "^4.0.3"
+
 jest-changed-files@^21.2.0:
   version "21.2.0"
   resolved "https://registry.yarnpkg.com/jest-changed-files/-/jest-changed-files-21.2.0.tgz#5dbeecad42f5d88b482334902ce1cba6d9798d29"
   dependencies:
     throat "^4.0.0"
 
+jest-changed-files@^22.2.0:
+  version "22.2.0"
+  resolved "https://registry.yarnpkg.com/jest-changed-files/-/jest-changed-files-22.2.0.tgz#517610c4a8ca0925bdc88b0ca53bd678aa8d019e"
+  dependencies:
+    throat "^4.0.0"
+
 jest-cli@^21.2.1:
   version "21.2.1"
   resolved "https://registry.yarnpkg.com/jest-cli/-/jest-cli-21.2.1.tgz#9c528b6629d651911138d228bdb033c157ec8c00"
@@ -1766,6 +1991,45 @@ jest-cli@^21.2.1:
     worker-farm "^1.3.1"
     yargs "^9.0.0"
 
+jest-cli@^22.4.2:
+  version "22.4.2"
+  resolved "https://registry.yarnpkg.com/jest-cli/-/jest-cli-22.4.2.tgz#e6546dc651e13d164481aa3e76e53ac4f4edab06"
+  dependencies:
+    ansi-escapes "^3.0.0"
+    chalk "^2.0.1"
+    exit "^0.1.2"
+    glob "^7.1.2"
+    graceful-fs "^4.1.11"
+    import-local "^1.0.0"
+    is-ci "^1.0.10"
+    istanbul-api "^1.1.14"
+    istanbul-lib-coverage "^1.1.1"
+    istanbul-lib-instrument "^1.8.0"
+    istanbul-lib-source-maps "^1.2.1"
+    jest-changed-files "^22.2.0"
+    jest-config "^22.4.2"
+    jest-environment-jsdom "^22.4.1"
+    jest-get-type "^22.1.0"
+    jest-haste-map "^22.4.2"
+    jest-message-util "^22.4.0"
+    jest-regex-util "^22.1.0"
+    jest-resolve-dependencies "^22.1.0"
+    jest-runner "^22.4.2"
+    jest-runtime "^22.4.2"
+    jest-snapshot "^22.4.0"
+    jest-util "^22.4.1"
+    jest-validate "^22.4.2"
+    jest-worker "^22.2.2"
+    micromatch "^2.3.11"
+    node-notifier "^5.2.1"
+    realpath-native "^1.0.0"
+    rimraf "^2.5.4"
+    slash "^1.0.0"
+    string-length "^2.0.0"
+    strip-ansi "^4.0.0"
+    which "^1.2.12"
+    yargs "^10.0.3"
+
 jest-config@^21.2.1:
   version "21.2.1"
   resolved "https://registry.yarnpkg.com/jest-config/-/jest-config-21.2.1.tgz#c7586c79ead0bcc1f38c401e55f964f13bf2a480"
@@ -1782,6 +2046,22 @@ jest-config@^21.2.1:
     jest-validate "^21.2.1"
     pretty-format "^21.2.1"
 
+jest-config@^22.4.2:
+  version "22.4.2"
+  resolved "https://registry.yarnpkg.com/jest-config/-/jest-config-22.4.2.tgz#580ba5819bf81a5e48f4fd470e8b81834f45c855"
+  dependencies:
+    chalk "^2.0.1"
+    glob "^7.1.1"
+    jest-environment-jsdom "^22.4.1"
+    jest-environment-node "^22.4.1"
+    jest-get-type "^22.1.0"
+    jest-jasmine2 "^22.4.2"
+    jest-regex-util "^22.1.0"
+    jest-resolve "^22.4.2"
+    jest-util "^22.4.1"
+    jest-validate "^22.4.2"
+    pretty-format "^22.4.0"
+
 jest-diff@^21.2.1:
   version "21.2.1"
   resolved "https://registry.yarnpkg.com/jest-diff/-/jest-diff-21.2.1.tgz#46cccb6cab2d02ce98bc314011764bb95b065b4f"
@@ -1791,10 +2071,25 @@ jest-diff@^21.2.1:
     jest-get-type "^21.2.0"
     pretty-format "^21.2.1"
 
+jest-diff@^22.4.0:
+  version "22.4.0"
+  resolved "https://registry.yarnpkg.com/jest-diff/-/jest-diff-22.4.0.tgz#384c2b78519ca44ca126382df53f134289232525"
+  dependencies:
+    chalk "^2.0.1"
+    diff "^3.2.0"
+    jest-get-type "^22.1.0"
+    pretty-format "^22.4.0"
+
 jest-docblock@^21.2.0:
   version "21.2.0"
   resolved "https://registry.yarnpkg.com/jest-docblock/-/jest-docblock-21.2.0.tgz#51529c3b30d5fd159da60c27ceedc195faf8d414"
 
+jest-docblock@^22.4.0:
+  version "22.4.0"
+  resolved "https://registry.yarnpkg.com/jest-docblock/-/jest-docblock-22.4.0.tgz#dbf1877e2550070cfc4d9b07a55775a0483159b8"
+  dependencies:
+    detect-newline "^2.1.0"
+
 jest-environment-jsdom@^21.2.1:
   version "21.2.1"
   resolved "https://registry.yarnpkg.com/jest-environment-jsdom/-/jest-environment-jsdom-21.2.1.tgz#38d9980c8259b2a608ec232deee6289a60d9d5b4"
@@ -1803,6 +2098,14 @@ jest-environment-jsdom@^21.2.1:
     jest-util "^21.2.1"
     jsdom "^9.12.0"
 
+jest-environment-jsdom@^22.4.1:
+  version "22.4.1"
+  resolved "https://registry.yarnpkg.com/jest-environment-jsdom/-/jest-environment-jsdom-22.4.1.tgz#754f408872441740100d3917e5ec40c74de6447f"
+  dependencies:
+    jest-mock "^22.2.0"
+    jest-util "^22.4.1"
+    jsdom "^11.5.1"
+
 jest-environment-node@^21.2.1:
   version "21.2.1"
   resolved "https://registry.yarnpkg.com/jest-environment-node/-/jest-environment-node-21.2.1.tgz#98c67df5663c7fbe20f6e792ac2272c740d3b8c8"
@@ -1810,10 +2113,21 @@ jest-environment-node@^21.2.1:
     jest-mock "^21.2.0"
     jest-util "^21.2.1"
 
+jest-environment-node@^22.4.1:
+  version "22.4.1"
+  resolved "https://registry.yarnpkg.com/jest-environment-node/-/jest-environment-node-22.4.1.tgz#418850eb654596b8d6e36c2021cbedbc23df8e16"
+  dependencies:
+    jest-mock "^22.2.0"
+    jest-util "^22.4.1"
+
 jest-get-type@^21.2.0:
   version "21.2.0"
   resolved "https://registry.yarnpkg.com/jest-get-type/-/jest-get-type-21.2.0.tgz#f6376ab9db4b60d81e39f30749c6c466f40d4a23"
 
+jest-get-type@^22.1.0:
+  version "22.1.0"
+  resolved "https://registry.yarnpkg.com/jest-get-type/-/jest-get-type-22.1.0.tgz#4e90af298ed6181edc85d2da500dbd2753e0d5a9"
+
 jest-haste-map@^21.2.0:
   version "21.2.0"
   resolved "https://registry.yarnpkg.com/jest-haste-map/-/jest-haste-map-21.2.0.tgz#1363f0a8bb4338f24f001806571eff7a4b2ff3d8"
@@ -1825,6 +2139,18 @@ jest-haste-map@^21.2.0:
     sane "^2.0.0"
     worker-farm "^1.3.1"
 
+jest-haste-map@^22.4.2:
+  version "22.4.2"
+  resolved "https://registry.yarnpkg.com/jest-haste-map/-/jest-haste-map-22.4.2.tgz#a90178e66146d4378bb076345a949071f3b015b4"
+  dependencies:
+    fb-watchman "^2.0.0"
+    graceful-fs "^4.1.11"
+    jest-docblock "^22.4.0"
+    jest-serializer "^22.4.0"
+    jest-worker "^22.2.2"
+    micromatch "^2.3.11"
+    sane "^2.0.0"
+
 jest-jasmine2@^21.2.1:
   version "21.2.1"
   resolved "https://registry.yarnpkg.com/jest-jasmine2/-/jest-jasmine2-21.2.1.tgz#9cc6fc108accfa97efebce10c4308548a4ea7592"
@@ -1838,6 +2164,28 @@ jest-jasmine2@^21.2.1:
     jest-snapshot "^21.2.1"
     p-cancelable "^0.3.0"
 
+jest-jasmine2@^22.4.2:
+  version "22.4.2"
+  resolved "https://registry.yarnpkg.com/jest-jasmine2/-/jest-jasmine2-22.4.2.tgz#dfd3d259579ed6f52510d8f1ab692808f0d40691"
+  dependencies:
+    chalk "^2.0.1"
+    co "^4.6.0"
+    expect "^22.4.0"
+    graceful-fs "^4.1.11"
+    is-generator-fn "^1.0.0"
+    jest-diff "^22.4.0"
+    jest-matcher-utils "^22.4.0"
+    jest-message-util "^22.4.0"
+    jest-snapshot "^22.4.0"
+    jest-util "^22.4.1"
+    source-map-support "^0.5.0"
+
+jest-leak-detector@^22.4.0:
+  version "22.4.0"
+  resolved "https://registry.yarnpkg.com/jest-leak-detector/-/jest-leak-detector-22.4.0.tgz#64da77f05b001c96d2062226e079f89989c4aa2f"
+  dependencies:
+    pretty-format "^22.4.0"
+
 jest-matcher-utils@^21.2.1:
   version "21.2.1"
   resolved "https://registry.yarnpkg.com/jest-matcher-utils/-/jest-matcher-utils-21.2.1.tgz#72c826eaba41a093ac2b4565f865eb8475de0f64"
@@ -1846,6 +2194,14 @@ jest-matcher-utils@^21.2.1:
     jest-get-type "^21.2.0"
     pretty-format "^21.2.1"
 
+jest-matcher-utils@^22.4.0:
+  version "22.4.0"
+  resolved "https://registry.yarnpkg.com/jest-matcher-utils/-/jest-matcher-utils-22.4.0.tgz#d55f5faf2270462736bdf7c7485ee931c9d4b6a1"
+  dependencies:
+    chalk "^2.0.1"
+    jest-get-type "^22.1.0"
+    pretty-format "^22.4.0"
+
 jest-message-util@^21.2.1:
   version "21.2.1"
   resolved "https://registry.yarnpkg.com/jest-message-util/-/jest-message-util-21.2.1.tgz#bfe5d4692c84c827d1dcf41823795558f0a1acbe"
@@ -1854,20 +2210,44 @@ jest-message-util@^21.2.1:
     micromatch "^2.3.11"
     slash "^1.0.0"
 
+jest-message-util@^22.4.0:
+  version "22.4.0"
+  resolved "https://registry.yarnpkg.com/jest-message-util/-/jest-message-util-22.4.0.tgz#e3d861df16d2fee60cb2bc8feac2188a42579642"
+  dependencies:
+    "@babel/code-frame" "^7.0.0-beta.35"
+    chalk "^2.0.1"
+    micromatch "^2.3.11"
+    slash "^1.0.0"
+    stack-utils "^1.0.1"
+
 jest-mock@^21.2.0:
   version "21.2.0"
   resolved "https://registry.yarnpkg.com/jest-mock/-/jest-mock-21.2.0.tgz#7eb0770e7317968165f61ea2a7281131534b3c0f"
 
+jest-mock@^22.2.0:
+  version "22.2.0"
+  resolved "https://registry.yarnpkg.com/jest-mock/-/jest-mock-22.2.0.tgz#444b3f9488a7473adae09bc8a77294afded397a7"
+
 jest-regex-util@^21.2.0:
   version "21.2.0"
   resolved "https://registry.yarnpkg.com/jest-regex-util/-/jest-regex-util-21.2.0.tgz#1b1e33e63143babc3e0f2e6c9b5ba1eb34b2d530"
 
+jest-regex-util@^22.1.0:
+  version "22.1.0"
+  resolved "https://registry.yarnpkg.com/jest-regex-util/-/jest-regex-util-22.1.0.tgz#5daf2fe270074b6da63e5d85f1c9acc866768f53"
+
 jest-resolve-dependencies@^21.2.0:
   version "21.2.0"
   resolved "https://registry.yarnpkg.com/jest-resolve-dependencies/-/jest-resolve-dependencies-21.2.0.tgz#9e231e371e1a736a1ad4e4b9a843bc72bfe03d09"
   dependencies:
     jest-regex-util "^21.2.0"
 
+jest-resolve-dependencies@^22.1.0:
+  version "22.1.0"
+  resolved "https://registry.yarnpkg.com/jest-resolve-dependencies/-/jest-resolve-dependencies-22.1.0.tgz#340e4139fb13315cd43abc054e6c06136be51e31"
+  dependencies:
+    jest-regex-util "^22.1.0"
+
 jest-resolve@^21.2.0:
   version "21.2.0"
   resolved "https://registry.yarnpkg.com/jest-resolve/-/jest-resolve-21.2.0.tgz#068913ad2ba6a20218e5fd32471f3874005de3a6"
@@ -1876,6 +2256,13 @@ jest-resolve@^21.2.0:
     chalk "^2.0.1"
     is-builtin-module "^1.0.0"
 
+jest-resolve@^22.4.2:
+  version "22.4.2"
+  resolved "https://registry.yarnpkg.com/jest-resolve/-/jest-resolve-22.4.2.tgz#25d88aa4147462c9c1c6a1ba16250d3794c24d00"
+  dependencies:
+    browser-resolve "^1.11.2"
+    chalk "^2.0.1"
+
 jest-runner@^21.2.1:
   version "21.2.1"
   resolved "https://registry.yarnpkg.com/jest-runner/-/jest-runner-21.2.1.tgz#194732e3e518bfb3d7cbfc0fd5871246c7e1a467"
@@ -1891,6 +2278,22 @@ jest-runner@^21.2.1:
     throat "^4.0.0"
     worker-farm "^1.3.1"
 
+jest-runner@^22.4.2:
+  version "22.4.2"
+  resolved "https://registry.yarnpkg.com/jest-runner/-/jest-runner-22.4.2.tgz#19390ea9d99f768973e16f95a1efa351c0017e87"
+  dependencies:
+    exit "^0.1.2"
+    jest-config "^22.4.2"
+    jest-docblock "^22.4.0"
+    jest-haste-map "^22.4.2"
+    jest-jasmine2 "^22.4.2"
+    jest-leak-detector "^22.4.0"
+    jest-message-util "^22.4.0"
+    jest-runtime "^22.4.2"
+    jest-util "^22.4.1"
+    jest-worker "^22.2.2"
+    throat "^4.0.0"
+
 jest-runtime@^21.2.1:
   version "21.2.1"
   resolved "https://registry.yarnpkg.com/jest-runtime/-/jest-runtime-21.2.1.tgz#99dce15309c670442eee2ebe1ff53a3cbdbbb73e"
@@ -1913,6 +2316,35 @@ jest-runtime@^21.2.1:
     write-file-atomic "^2.1.0"
     yargs "^9.0.0"
 
+jest-runtime@^22.4.2:
+  version "22.4.2"
+  resolved "https://registry.yarnpkg.com/jest-runtime/-/jest-runtime-22.4.2.tgz#0de0444f65ce15ee4f2e0055133fc7c17b9168f3"
+  dependencies:
+    babel-core "^6.0.0"
+    babel-jest "^22.4.1"
+    babel-plugin-istanbul "^4.1.5"
+    chalk "^2.0.1"
+    convert-source-map "^1.4.0"
+    exit "^0.1.2"
+    graceful-fs "^4.1.11"
+    jest-config "^22.4.2"
+    jest-haste-map "^22.4.2"
+    jest-regex-util "^22.1.0"
+    jest-resolve "^22.4.2"
+    jest-util "^22.4.1"
+    jest-validate "^22.4.2"
+    json-stable-stringify "^1.0.1"
+    micromatch "^2.3.11"
+    realpath-native "^1.0.0"
+    slash "^1.0.0"
+    strip-bom "3.0.0"
+    write-file-atomic "^2.1.0"
+    yargs "^10.0.3"
+
+jest-serializer@^22.4.0:
+  version "22.4.0"
+  resolved "https://registry.yarnpkg.com/jest-serializer/-/jest-serializer-22.4.0.tgz#b5d145b98c4b0d2c20ab686609adbb81fe23b566"
+
 jest-snapshot@^21.2.1:
   version "21.2.1"
   resolved "https://registry.yarnpkg.com/jest-snapshot/-/jest-snapshot-21.2.1.tgz#29e49f16202416e47343e757e5eff948c07fd7b0"
@@ -1924,6 +2356,17 @@ jest-snapshot@^21.2.1:
     natural-compare "^1.4.0"
     pretty-format "^21.2.1"
 
+jest-snapshot@^22.4.0:
+  version "22.4.0"
+  resolved "https://registry.yarnpkg.com/jest-snapshot/-/jest-snapshot-22.4.0.tgz#03d3ce63f8fa7352388afc6a3c8b5ccc3a180ed7"
+  dependencies:
+    chalk "^2.0.1"
+    jest-diff "^22.4.0"
+    jest-matcher-utils "^22.4.0"
+    mkdirp "^0.5.1"
+    natural-compare "^1.4.0"
+    pretty-format "^22.4.0"
+
 jest-util@^21.2.1:
   version "21.2.1"
   resolved "https://registry.yarnpkg.com/jest-util/-/jest-util-21.2.1.tgz#a274b2f726b0897494d694a6c3d6a61ab819bb78"
@@ -1936,6 +2379,18 @@ jest-util@^21.2.1:
     jest-validate "^21.2.1"
     mkdirp "^0.5.1"
 
+jest-util@^22.4.1:
+  version "22.4.1"
+  resolved "https://registry.yarnpkg.com/jest-util/-/jest-util-22.4.1.tgz#dd17c3bdb067f8e90591563ec0c42bf847dc249f"
+  dependencies:
+    callsites "^2.0.0"
+    chalk "^2.0.1"
+    graceful-fs "^4.1.11"
+    is-ci "^1.0.10"
+    jest-message-util "^22.4.0"
+    mkdirp "^0.5.1"
+    source-map "^0.6.0"
+
 jest-validate@^21.2.1:
   version "21.2.1"
   resolved "https://registry.yarnpkg.com/jest-validate/-/jest-validate-21.2.1.tgz#cc0cbca653cd54937ba4f2a111796774530dd3c7"
@@ -1945,13 +2400,36 @@ jest-validate@^21.2.1:
     leven "^2.1.0"
     pretty-format "^21.2.1"
 
+jest-validate@^22.4.2:
+  version "22.4.2"
+  resolved "https://registry.yarnpkg.com/jest-validate/-/jest-validate-22.4.2.tgz#e789a4e056173bf97fe797a2df2d52105c57d4f4"
+  dependencies:
+    chalk "^2.0.1"
+    jest-config "^22.4.2"
+    jest-get-type "^22.1.0"
+    leven "^2.1.0"
+    pretty-format "^22.4.0"
+
+jest-worker@^22.2.2:
+  version "22.2.2"
+  resolved "https://registry.yarnpkg.com/jest-worker/-/jest-worker-22.2.2.tgz#c1f5dc39976884b81f68ec50cb8532b2cbab3390"
+  dependencies:
+    merge-stream "^1.0.1"
+
+jest@^22.4.2:
+  version "22.4.2"
+  resolved "https://registry.yarnpkg.com/jest/-/jest-22.4.2.tgz#34012834a49bf1bdd3bc783850ab44e4499afc20"
+  dependencies:
+    import-local "^1.0.0"
+    jest-cli "^22.4.2"
+
 js-tokens@^3.0.0, js-tokens@^3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-3.0.2.tgz#9866df395102130e38f7f996bceb65443209c25b"
 
 js-yaml@^3.7.0:
-  version "3.10.0"
-  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.10.0.tgz#2e78441646bd4682e963f22b6e92823c309c62dc"
+  version "3.11.0"
+  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.11.0.tgz#597c1a8bd57152f26d622ce4117851a51f5ebaef"
   dependencies:
     argparse "^1.0.7"
     esprima "^4.0.0"
@@ -1960,6 +2438,37 @@ jsbn@~0.1.0:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/jsbn/-/jsbn-0.1.1.tgz#a5e654c2e5a2deb5f201d96cefbca80c0ef2f513"
 
+jsdom@^11.5.1:
+  version "11.6.2"
+  resolved "https://registry.yarnpkg.com/jsdom/-/jsdom-11.6.2.tgz#25d1ef332d48adf77fc5221fe2619967923f16bb"
+  dependencies:
+    abab "^1.0.4"
+    acorn "^5.3.0"
+    acorn-globals "^4.1.0"
+    array-equal "^1.0.0"
+    browser-process-hrtime "^0.1.2"
+    content-type-parser "^1.0.2"
+    cssom ">= 0.3.2 < 0.4.0"
+    cssstyle ">= 0.2.37 < 0.3.0"
+    domexception "^1.0.0"
+    escodegen "^1.9.0"
+    html-encoding-sniffer "^1.0.2"
+    left-pad "^1.2.0"
+    nwmatcher "^1.4.3"
+    parse5 "4.0.0"
+    pn "^1.1.0"
+    request "^2.83.0"
+    request-promise-native "^1.0.5"
+    sax "^1.2.4"
+    symbol-tree "^3.2.2"
+    tough-cookie "^2.3.3"
+    w3c-hr-time "^1.0.1"
+    webidl-conversions "^4.0.2"
+    whatwg-encoding "^1.0.3"
+    whatwg-url "^6.4.0"
+    ws "^4.0.0"
+    xml-name-validator "^3.0.0"
+
 jsdom@^9.12.0:
   version "9.12.0"
   resolved "https://registry.yarnpkg.com/jsdom/-/jsdom-9.12.0.tgz#e8c546fffcb06c00d4833ca84410fed7f8a097d4"
@@ -2049,6 +2558,10 @@ lcid@^1.0.0:
   dependencies:
     invert-kv "^1.0.0"
 
+left-pad@^1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/left-pad/-/left-pad-1.2.0.tgz#d30a73c6b8201d8f7d8e7956ba9616087a68e0ee"
+
 leven@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/leven/-/leven-2.1.0.tgz#c2e7a9f772094dee9d34202ae8acce4687875580"
@@ -2086,7 +2599,11 @@ locate-path@^2.0.0:
     p-locate "^2.0.0"
     path-exists "^3.0.0"
 
-lodash@^4.14.0, lodash@^4.17.4, lodash@^4.5.1:
+lodash.sortby@^4.7.0:
+  version "4.7.0"
+  resolved "https://registry.yarnpkg.com/lodash.sortby/-/lodash.sortby-4.7.0.tgz#edd14c824e2cc9c1e0b0a1b42bb5210516a42438"
+
+lodash@^4.13.1, lodash@^4.14.0, lodash@^4.17.4, lodash@^4.5.1:
   version "4.17.5"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.5.tgz#99a92d65c0272debe8c96b6057bc8fbfa3bed511"
 
@@ -2127,6 +2644,12 @@ merge-descriptors@1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/merge-descriptors/-/merge-descriptors-1.0.1.tgz#b00aaa556dd8b44568150ec9d1b953f3f90cbb61"
 
+merge-stream@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/merge-stream/-/merge-stream-1.0.1.tgz#4041202d508a342ba00174008df0c251b8c135e1"
+  dependencies:
+    readable-stream "^2.0.1"
+
 merge@^1.1.3:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/merge/-/merge-1.2.0.tgz#7531e39d4949c281a66b8c5a6e0265e8b05894da"
@@ -2215,7 +2738,7 @@ node-int64@^0.4.0:
   version "0.4.0"
   resolved "https://registry.yarnpkg.com/node-int64/-/node-int64-0.4.0.tgz#87a9065cdb355d3182d8f94ce11188b825c68a3b"
 
-node-notifier@^5.0.2:
+node-notifier@^5.0.2, node-notifier@^5.2.1:
   version "5.2.1"
   resolved "https://registry.yarnpkg.com/node-notifier/-/node-notifier-5.2.1.tgz#fa313dd08f5517db0e2502e5758d664ac69f9dea"
   dependencies:
@@ -2281,7 +2804,7 @@ number-is-nan@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/number-is-nan/-/number-is-nan-1.0.1.tgz#097b602b53422a522c1afb8790318336941a011d"
 
-"nwmatcher@>= 1.3.9 < 2.0.0":
+"nwmatcher@>= 1.3.9 < 2.0.0", nwmatcher@^1.4.3:
   version "1.4.3"
   resolved "https://registry.yarnpkg.com/nwmatcher/-/nwmatcher-1.4.3.tgz#64348e3b3d80f035b40ac11563d278f8b72db89c"
 
@@ -2293,6 +2816,17 @@ object-assign@^4.1.0:
   version "4.1.1"
   resolved "https://registry.yarnpkg.com/object-assign/-/object-assign-4.1.1.tgz#2109adc7965887cfc05cbbd442cac8bfbb360863"
 
+object-keys@^1.0.8:
+  version "1.0.11"
+  resolved "https://registry.yarnpkg.com/object-keys/-/object-keys-1.0.11.tgz#c54601778ad560f1142ce0e01bcca8b56d13426d"
+
+object.getownpropertydescriptors@^2.0.3:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/object.getownpropertydescriptors/-/object.getownpropertydescriptors-2.0.3.tgz#8758c846f5b407adab0f236e0986f14b051caa16"
+  dependencies:
+    define-properties "^1.1.2"
+    es-abstract "^1.5.1"
+
 object.omit@^2.0.0:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/object.omit/-/object.omit-2.0.1.tgz#1a9c744829f39dbb858c76ca3579ae2a54ebd1fa"
@@ -2392,6 +2926,10 @@ parse-json@^2.2.0:
   dependencies:
     error-ex "^1.2.0"
 
+parse5@4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/parse5/-/parse5-4.0.0.tgz#6d78656e3da8d78b4ec0b906f7c08ef1dfe3f608"
+
 parse5@^1.5.1:
   version "1.5.1"
   resolved "https://registry.yarnpkg.com/parse5/-/parse5-1.5.1.tgz#9b7f3b0de32be78dc2401b17573ccaf0f6f59d94"
@@ -2466,6 +3004,16 @@ pinkie@^2.0.0:
   version "2.0.4"
   resolved "https://registry.yarnpkg.com/pinkie/-/pinkie-2.0.4.tgz#72556b80cfa0d48a974e80e77248e80ed4f7f870"
 
+pkg-dir@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/pkg-dir/-/pkg-dir-2.0.0.tgz#f6d5d1109e19d63edf428e0bd57e12777615334b"
+  dependencies:
+    find-up "^2.1.0"
+
+pn@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/pn/-/pn-1.1.0.tgz#e2f4cef0e219f463c179ab37463e4e1ecdccbafb"
+
 prelude-ls@~1.1.2:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/prelude-ls/-/prelude-ls-1.1.2.tgz#21932a549f5e52ffd9a827f570e04be62a97da54"
@@ -2485,6 +3033,13 @@ pretty-format@^21.2.1:
     ansi-regex "^3.0.0"
     ansi-styles "^3.2.0"
 
+pretty-format@^22.4.0:
+  version "22.4.0"
+  resolved "https://registry.yarnpkg.com/pretty-format/-/pretty-format-22.4.0.tgz#237b1f7e1c50ed03bc65c03ccc29d7c8bb7beb94"
+  dependencies:
+    ansi-regex "^3.0.0"
+    ansi-styles "^3.2.0"
+
 private@^0.1.6, private@^0.1.7:
   version "0.1.8"
   resolved "https://registry.yarnpkg.com/private/-/private-0.1.8.tgz#2381edb3689f7a53d653190060fcf822d2f368ff"
@@ -2512,6 +3067,10 @@ punycode@^1.4.1:
   version "1.4.1"
   resolved "https://registry.yarnpkg.com/punycode/-/punycode-1.4.1.tgz#c0d5a63b2718800ad8e1eb0fa5269c84dd41845e"
 
+punycode@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/punycode/-/punycode-2.1.0.tgz#5f863edc89b96db09074bad7947bf09056ca4e7d"
+
 qs@6.5.1, qs@~6.5.1:
   version "6.5.1"
   resolved "https://registry.yarnpkg.com/qs/-/qs-6.5.1.tgz#349cdf6eef89ec45c12d7d5eb3fc0c870343a6d8"
@@ -2579,9 +3138,9 @@ read-pkg@^2.0.0:
     normalize-package-data "^2.3.2"
     path-type "^2.0.0"
 
-readable-stream@^2.0.6, readable-stream@^2.1.4:
-  version "2.3.4"
-  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-2.3.4.tgz#c946c3f47fa7d8eabc0b6150f4a12f69a4574071"
+readable-stream@^2.0.1, readable-stream@^2.0.6, readable-stream@^2.1.4:
+  version "2.3.5"
+  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-2.3.5.tgz#b4f85003a938cbb6ecbce2a124fb1012bd1a838d"
   dependencies:
     core-util-is "~1.0.0"
     inherits "~2.0.3"
@@ -2591,6 +3150,12 @@ readable-stream@^2.0.6, readable-stream@^2.1.4:
     string_decoder "~1.0.3"
     util-deprecate "~1.0.1"
 
+realpath-native@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/realpath-native/-/realpath-native-1.0.0.tgz#7885721a83b43bd5327609f0ddecb2482305fdf0"
+  dependencies:
+    util.promisify "^1.0.0"
+
 regenerate@^1.2.1:
   version "1.3.3"
   resolved "https://registry.yarnpkg.com/regenerate/-/regenerate-1.3.3.tgz#0c336d3980553d755c39b586ae3b20aa49c82b7f"
@@ -2649,6 +3214,20 @@ repeating@^2.0.0:
   dependencies:
     is-finite "^1.0.0"
 
+request-promise-core@1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/request-promise-core/-/request-promise-core-1.1.1.tgz#3eee00b2c5aa83239cfb04c5700da36f81cd08b6"
+  dependencies:
+    lodash "^4.13.1"
+
+request-promise-native@^1.0.5:
+  version "1.0.5"
+  resolved "https://registry.yarnpkg.com/request-promise-native/-/request-promise-native-1.0.5.tgz#5281770f68e0c9719e5163fd3fab482215f4fda5"
+  dependencies:
+    request-promise-core "1.1.1"
+    stealthy-require "^1.1.0"
+    tough-cookie ">=2.3.3"
+
 request@2.81.0:
   version "2.81.0"
   resolved "https://registry.yarnpkg.com/request/-/request-2.81.0.tgz#c6928946a0e06c5f8d6f8a9333469ffda46298a0"
@@ -2703,6 +3282,33 @@ request@^2.79.0:
     tunnel-agent "^0.6.0"
     uuid "^3.1.0"
 
+request@^2.83.0:
+  version "2.85.0"
+  resolved "https://registry.yarnpkg.com/request/-/request-2.85.0.tgz#5a03615a47c61420b3eb99b7dba204f83603e1fa"
+  dependencies:
+    aws-sign2 "~0.7.0"
+    aws4 "^1.6.0"
+    caseless "~0.12.0"
+    combined-stream "~1.0.5"
+    extend "~3.0.1"
+    forever-agent "~0.6.1"
+    form-data "~2.3.1"
+    har-validator "~5.0.3"
+    hawk "~6.0.2"
+    http-signature "~1.2.0"
+    is-typedarray "~1.0.0"
+    isstream "~0.1.2"
+    json-stringify-safe "~5.0.1"
+    mime-types "~2.1.17"
+    oauth-sign "~0.8.2"
+    performance-now "^2.1.0"
+    qs "~6.5.1"
+    safe-buffer "^5.1.1"
+    stringstream "~0.0.5"
+    tough-cookie "~2.3.3"
+    tunnel-agent "^0.6.0"
+    uuid "^3.1.0"
+
 require-directory@^2.1.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/require-directory/-/require-directory-2.1.1.tgz#8c64ad5fd30dab1c976e2344ffe7f792a6a6df42"
@@ -2711,6 +3317,16 @@ require-main-filename@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/require-main-filename/-/require-main-filename-1.0.1.tgz#97f717b69d48784f5f526a6c5aa8ffdda055a4d1"
 
+resolve-cwd@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/resolve-cwd/-/resolve-cwd-2.0.0.tgz#00a9f7387556e27038eae232caa372a6a59b665a"
+  dependencies:
+    resolve-from "^3.0.0"
+
+resolve-from@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/resolve-from/-/resolve-from-3.0.0.tgz#b22c7af7d9d6881bc8b6e653335eebcb0a188748"
+
 resolve@1.1.7:
   version "1.1.7"
   resolved "https://registry.yarnpkg.com/resolve/-/resolve-1.1.7.tgz#203114d82ad2c5ed9e8e0411b3932875e889e97b"
@@ -2721,7 +3337,7 @@ right-align@^0.1.1:
   dependencies:
     align-text "^0.1.1"
 
-rimraf@2, rimraf@^2.5.1, rimraf@^2.6.1:
+rimraf@2, rimraf@^2.5.1, rimraf@^2.5.4, rimraf@^2.6.1:
   version "2.6.2"
   resolved "https://registry.yarnpkg.com/rimraf/-/rimraf-2.6.2.tgz#2ed8150d24a16ea8651e6d6ef0f47c4158ce7a36"
   dependencies:
@@ -2772,7 +3388,7 @@ sane@^2.0.0:
   optionalDependencies:
     fsevents "^1.1.1"
 
-sax@^1.2.1:
+sax@^1.2.1, sax@^1.2.4:
   version "1.2.4"
   resolved "https://registry.yarnpkg.com/sax/-/sax-1.2.4.tgz#2816234e2378bddc4e5354fab5caa895df7100d9"
 
@@ -2859,6 +3475,12 @@ source-map-support@^0.4.15:
   dependencies:
     source-map "^0.5.6"
 
+source-map-support@^0.5.0:
+  version "0.5.3"
+  resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.3.tgz#2b3d5fff298cfa4d1afd7d4352d569e9a0158e76"
+  dependencies:
+    source-map "^0.6.0"
+
 source-map@^0.4.4:
   version "0.4.4"
   resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.4.4.tgz#eba4f5da9c0dc999de68032d8b4f76173652036b"
@@ -2869,7 +3491,7 @@ source-map@^0.5.3, source-map@^0.5.6, source-map@^0.5.7, source-map@~0.5.1:
   version "0.5.7"
   resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.5.7.tgz#8a039d2d1021d22d1ea14c80d8ea468ba2ef3fcc"
 
-source-map@~0.6.1:
+source-map@^0.6.0, source-map@~0.6.1:
   version "0.6.1"
   resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.6.1.tgz#74722af32e9614e9c287a8d0bbde48b5e2f1a263"
 
@@ -2917,6 +3539,10 @@ sshpk@^1.7.0:
     jsbn "~0.1.0"
     tweetnacl "~0.14.0"
 
+stack-utils@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/stack-utils/-/stack-utils-1.0.1.tgz#d4f33ab54e8e38778b0ca5cfd3b3afb12db68620"
+
 "statuses@>= 1.3.1 < 2":
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/statuses/-/statuses-1.4.0.tgz#bb73d446da2796106efcc1b601a253d6c46bd087"
@@ -2925,6 +3551,10 @@ statuses@~1.3.1:
   version "1.3.1"
   resolved "https://registry.yarnpkg.com/statuses/-/statuses-1.3.1.tgz#faf51b9eb74aaef3b3acf4ad5f61abf24cb7b93e"
 
+stealthy-require@^1.1.0:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/stealthy-require/-/stealthy-require-1.1.1.tgz#35b09875b4ff49f26a777e509b3090a3226bf24b"
+
 string-length@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/string-length/-/string-length-2.0.0.tgz#d40dbb686a3ace960c1cffca562bf2c45f8363ed"
@@ -2940,7 +3570,7 @@ string-width@^1.0.1, string-width@^1.0.2:
     is-fullwidth-code-point "^1.0.0"
     strip-ansi "^3.0.0"
 
-string-width@^2.0.0:
+string-width@^2.0.0, string-width@^2.1.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/string-width/-/string-width-2.1.1.tgz#ab93f27a8dc13d28cac815c462143a6d9012ae9e"
   dependencies:
@@ -3007,13 +3637,13 @@ supports-color@^3.1.2, supports-color@^3.2.3:
   dependencies:
     has-flag "^1.0.0"
 
-supports-color@^5.2.0:
-  version "5.2.0"
-  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-5.2.0.tgz#b0d5333b1184dd3666cbe5aa0b45c5ac7ac17a4a"
+supports-color@^5.3.0:
+  version "5.3.0"
+  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-5.3.0.tgz#5b24ac15db80fa927cf5227a4a33fd3c4c7676c0"
   dependencies:
     has-flag "^3.0.0"
 
-symbol-tree@^3.2.1:
+symbol-tree@^3.2.1, symbol-tree@^3.2.2:
   version "3.2.2"
   resolved "https://registry.yarnpkg.com/symbol-tree/-/symbol-tree-3.2.2.tgz#ae27db38f660a7ae2e1c3b7d1bc290819b8519e6"
 
@@ -3060,12 +3690,18 @@ to-fast-properties@^1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/to-fast-properties/-/to-fast-properties-1.0.3.tgz#b83571fa4d8c25b82e231b06e3a3055de4ca1a47"
 
-tough-cookie@^2.3.2, tough-cookie@~2.3.0, tough-cookie@~2.3.3:
+tough-cookie@>=2.3.3, tough-cookie@^2.3.2, tough-cookie@^2.3.3, tough-cookie@~2.3.0, tough-cookie@~2.3.3:
   version "2.3.4"
   resolved "https://registry.yarnpkg.com/tough-cookie/-/tough-cookie-2.3.4.tgz#ec60cee38ac675063ffc97a5c18970578ee83655"
   dependencies:
     punycode "^1.4.1"
 
+tr46@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/tr46/-/tr46-1.0.1.tgz#a8b13fd6bfd2489519674ccde55ba3693b706d09"
+  dependencies:
+    punycode "^2.1.0"
+
 tr46@~0.0.3:
   version "0.0.3"
   resolved "https://registry.yarnpkg.com/tr46/-/tr46-0.0.3.tgz#8184fd347dac9cdc185992f3a6622e14b9d9ab6a"
@@ -3111,8 +3747,8 @@ uglify-js@^2.6:
     uglify-to-browserify "~1.0.0"
 
 uglify-js@^3.0.9:
-  version "3.3.12"
-  resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-3.3.12.tgz#efd87c16a1f4c674a8a5ede571001ef634dcc883"
+  version "3.3.13"
+  resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-3.3.13.tgz#8a1a89eeb16e2d6a66b0db2b04cb871af3c669cf"
   dependencies:
     commander "~2.14.1"
     source-map "~0.6.1"
@@ -3133,6 +3769,13 @@ util-deprecate@~1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/util-deprecate/-/util-deprecate-1.0.2.tgz#450d4dc9fa70de732762fbd2d4a28981419a0ccf"
 
+util.promisify@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/util.promisify/-/util.promisify-1.0.0.tgz#440f7165a459c9a16dc145eb8e72f35687097030"
+  dependencies:
+    define-properties "^1.1.2"
+    object.getownpropertydescriptors "^2.0.3"
+
 utils-merge@1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/utils-merge/-/utils-merge-1.0.1.tgz#9f95710f50a267947b2ccc124741c1028427e713"
@@ -3160,6 +3803,12 @@ verror@1.10.0:
     core-util-is "1.0.2"
     extsprintf "^1.2.0"
 
+w3c-hr-time@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/w3c-hr-time/-/w3c-hr-time-1.0.1.tgz#82ac2bff63d950ea9e3189a58a65625fedf19045"
+  dependencies:
+    browser-process-hrtime "^0.1.2"
+
 walker@~1.0.5:
   version "1.0.7"
   resolved "https://registry.yarnpkg.com/walker/-/walker-1.0.7.tgz#2f7f9b8fd10d677262b18a884e28d19618e028fb"
@@ -3177,11 +3826,11 @@ webidl-conversions@^3.0.0:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/webidl-conversions/-/webidl-conversions-3.0.1.tgz#24534275e2a7bc6be7bc86611cc16ae0a5654871"
 
-webidl-conversions@^4.0.0:
+webidl-conversions@^4.0.0, webidl-conversions@^4.0.1, webidl-conversions@^4.0.2:
   version "4.0.2"
   resolved "https://registry.yarnpkg.com/webidl-conversions/-/webidl-conversions-4.0.2.tgz#a855980b1f0b6b359ba1d5d9fb39ae941faa63ad"
 
-whatwg-encoding@^1.0.1:
+whatwg-encoding@^1.0.1, whatwg-encoding@^1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/whatwg-encoding/-/whatwg-encoding-1.0.3.tgz#57c235bc8657e914d24e1a397d3c82daee0a6ba3"
   dependencies:
@@ -3194,6 +3843,14 @@ whatwg-url@^4.3.0:
     tr46 "~0.0.3"
     webidl-conversions "^3.0.0"
 
+whatwg-url@^6.4.0:
+  version "6.4.0"
+  resolved "https://registry.yarnpkg.com/whatwg-url/-/whatwg-url-6.4.0.tgz#08fdf2b9e872783a7a1f6216260a1d66cc722e08"
+  dependencies:
+    lodash.sortby "^4.7.0"
+    tr46 "^1.0.0"
+    webidl-conversions "^4.0.1"
+
 which-module@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/which-module/-/which-module-2.0.0.tgz#d9ef07dce77b9902b8a3a8fa4b31c3e3f7e6e87a"
@@ -3252,10 +3909,21 @@ write-file-atomic@^2.1.0:
     imurmurhash "^0.1.4"
     signal-exit "^3.0.2"
 
+ws@^4.0.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/ws/-/ws-4.1.0.tgz#a979b5d7d4da68bf54efe0408967c324869a7289"
+  dependencies:
+    async-limiter "~1.0.0"
+    safe-buffer "~5.1.0"
+
 xml-name-validator@^2.0.1:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/xml-name-validator/-/xml-name-validator-2.0.1.tgz#4d8b8f1eccd3419aa362061becef515e1e559635"
 
+xml-name-validator@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/xml-name-validator/-/xml-name-validator-3.0.0.tgz#6ae73e06de4d8c6e47f9fb181f78d648ad457c6a"
+
 xtend@~4.0.1:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/xtend/-/xtend-4.0.1.tgz#a5c6d532be656e23db820efb943a1f04998d63af"
@@ -3274,6 +3942,29 @@ yargs-parser@^7.0.0:
   dependencies:
     camelcase "^4.1.0"
 
+yargs-parser@^8.1.0:
+  version "8.1.0"
+  resolved "https://registry.yarnpkg.com/yargs-parser/-/yargs-parser-8.1.0.tgz#f1376a33b6629a5d063782944da732631e966950"
+  dependencies:
+    camelcase "^4.1.0"
+
+yargs@^10.0.3:
+  version "10.1.2"
+  resolved "https://registry.yarnpkg.com/yargs/-/yargs-10.1.2.tgz#454d074c2b16a51a43e2fb7807e4f9de69ccb5c5"
+  dependencies:
+    cliui "^4.0.0"
+    decamelize "^1.1.1"
+    find-up "^2.1.0"
+    get-caller-file "^1.0.1"
+    os-locale "^2.0.0"
+    require-directory "^2.1.1"
+    require-main-filename "^1.0.1"
+    set-blocking "^2.0.0"
+    string-width "^2.0.0"
+    which-module "^2.0.0"
+    y18n "^3.2.1"
+    yargs-parser "^8.1.0"
+
 yargs@^9.0.0:
   version "9.0.1"
   resolved "https://registry.yarnpkg.com/yargs/-/yargs-9.0.1.tgz#52acc23feecac34042078ee78c0c007f5085db4c"