diff --git a/addon/index.js b/addon/index.js
index 6589280..76f7818 100644
--- a/addon/index.js
+++ b/addon/index.js
@@ -1 +1,58 @@
-/* Hey @GavinJoyce, add your code here! :) */
+import WeakMap from 'ember-weakmap';
+import Ember from 'ember';
+
+function isEqual(key, a, b) {
+  return a === b;
+}
+
+export default Ember.Mixin.create({
+  _didChangeAttrsWeakMap: null, //this tracks previous state of any `trackAttrChanges`
+  didChangeAttrsConfig: [], //attributes to track
+
+  didReceiveAttrs() {
+    this._super(...arguments);
+
+    let weakMap = this.get('_didChangeAttrsWeakMap');
+
+    if (weakMap === null) { //first run
+      let config = this.get('didChangeAttrsConfig');
+      let trackedAttrs = config.attrs;
+      let initialValues = {};
+
+      for (let i=0; i<trackedAttrs.length; i++) {
+        let key = trackedAttrs[i];
+        initialValues[key] = this.get(key);
+      }
+
+      weakMap = new WeakMap();
+      weakMap.set(this, initialValues);
+      this.set('_didChangeAttrsWeakMap', weakMap);
+    }
+  },
+
+  didUpdateAttrs() {
+    this._super(...arguments);
+
+    let config = this.get('didChangeAttrsConfig');
+    let equalityFn = config.isEqual || isEqual;
+
+    let trackedAttrs = config.attrs;
+    let oldValues = this.get('_didChangeAttrsWeakMap').get(this);
+    let changes = {};
+
+    for (let i=0; i<trackedAttrs.length; i++) {
+      let key = trackedAttrs[i];
+      let current = this.get(key);
+      let previous = oldValues[key];
+
+      if (!equalityFn(key, previous, current)) {
+        changes[key] = { previous, current };
+        oldValues[key] = current;
+      }
+    }
+
+    if(Object.keys(changes).length > 0) {
+      this.didChangeAttrs(changes);
+    }
+  },
+});
diff --git a/tests/integration/.gitkeep b/tests/integration/.gitkeep
deleted file mode 100644
index e69de29..0000000
diff --git a/tests/integration/did-change-attrs-test.js b/tests/integration/did-change-attrs-test.js
new file mode 100644
index 0000000..5636f31
--- /dev/null
+++ b/tests/integration/did-change-attrs-test.js
@@ -0,0 +1,110 @@
+import Ember from 'ember';
+import { test, moduleForComponent } from 'ember-qunit';
+import hbs from 'htmlbars-inline-precompile';
+import DidChangeAttrs from 'ember-did-change-attrs';
+
+function registerComponent(testSuite, hash, klass = Ember.Component) {
+  testSuite.register('component:x-changer', klass.extend(DidChangeAttrs, hash));
+}
+
+moduleForComponent('x-changer', 'Integration | DidChangeAttrs', {
+  integration: true
+});
+
+test('Basic usage', function(assert) {
+  let changedAttrs, didChangeAttrsCallCount = 0;
+
+  registerComponent(this, {
+    didChangeAttrsConfig: {
+      attrs: ['email', 'isAdmin']
+    },
+
+    didChangeAttrs(changes) {
+      this._super(...arguments);
+
+      didChangeAttrsCallCount++;
+      changedAttrs = changes;
+    }
+  });
+
+  this.set('name', 'Tomster');
+  this.set('email', 'ember@hamster.org');
+  this.set('isAdmin', false);
+
+  this.render(hbs`{{x-changer email=email isAdmin=isAdmin name=name}}`);
+
+  assert.equal(didChangeAttrsCallCount, 0, '`didChangeAttrs` is not called on initial render');
+
+  this.set('email', 'emberjs@hamster.org');
+  assert.equal(didChangeAttrsCallCount, 1, '`didChangeAttrs` is called when an attribute changed');
+
+  assert.deepEqual(changedAttrs, {
+    email: {
+      previous: 'ember@hamster.org',
+      current: 'emberjs@hamster.org'
+    }
+  }, '`changedAttrs` contains the attribute changes');
+
+  this.set('name', 'TheTomster');
+  assert.equal(didChangeAttrsCallCount, 1, '`didChangeAttrs` is not called when an untracked attribute is changed');
+});
+
+test('Custom isEqual', function(assert) {
+  let changedAttrs, didChangeAttrsCallCount = 0;
+
+  registerComponent(this, {
+    didChangeAttrsConfig: {
+      attrs: ['user', 'isAdmin'],
+      isEqual(key, a, b) {
+        if (key === 'user') {
+          return (a && b) ? a.id === b.id : a === b;
+        }
+        return a === b;
+      }
+    },
+
+    didChangeAttrs(changes) {
+      this._super(...arguments);
+
+      didChangeAttrsCallCount++;
+      changedAttrs = changes;
+    }
+  });
+
+  this.set('user', { name: 'Tomster', id: '123' });
+  this.set('isAdmin', false);
+
+  this.render(hbs`{{x-changer user=user isAdmin=isAdmin}}`);
+
+  assert.equal(didChangeAttrsCallCount, 0, '`didChangeAttrs` is not called on initial render');
+
+  this.set('user', { name: 'TheTomster', id: '123' });
+
+  assert.equal(didChangeAttrsCallCount, 0, '`didChangeAttrs` is not called because user entities are equal');
+
+  this.set('user', { name: 'Zoey', id: '456' });
+
+  assert.equal(didChangeAttrsCallCount, 1, '`didChangeAttrs` is called because user entities are not equal');
+  assert.deepEqual(changedAttrs, {
+    user: {
+      previous: {
+        id: '123',
+        name: 'Tomster'
+      },
+      current: {
+        id: '456',
+        name: 'Zoey'
+      }
+    }
+  }, '`user` included in `changedAttrs` because `user.id` is different');
+
+  this.set('isAdmin', true);
+
+  assert.equal(didChangeAttrsCallCount, 2, '`didChangeAttrs` is called because isAdmin changed');
+  assert.deepEqual(changedAttrs, {
+    isAdmin: {
+      previous: false,
+      current: true
+    }
+  }, '`isAdmin` included in `changedAttrs` because it changed');
+});
diff --git a/yarn.lock b/yarn.lock
index 62fc50f..e8837f7 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -113,6 +113,10 @@ acorn@^3.0.4:
   version "3.3.0"
   resolved "https://registry.yarnpkg.com/acorn/-/acorn-3.3.0.tgz#45e37fb39e8da3f25baee3ff5369e2bb5f22017a"
 
+acorn@^4.0.3:
+  version "4.0.13"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-4.0.13.tgz#105495ae5361d697bd195c825192e1ad7f253787"
+
 acorn@^5.1.1:
   version "5.2.1"
   resolved "https://registry.yarnpkg.com/acorn/-/acorn-5.2.1.tgz#317ac7821826c22c702d66189ab8359675f135d7"
@@ -149,6 +153,12 @@ align-text@^0.1.1, align-text@^0.1.3:
     longest "^1.0.1"
     repeat-string "^1.5.2"
 
+alter@~0.2.0:
+  version "0.2.0"
+  resolved "https://registry.yarnpkg.com/alter/-/alter-0.2.0.tgz#c7588808617572034aae62480af26b1d4d1cb3cd"
+  dependencies:
+    stable "~0.1.3"
+
 amd-name-resolver@0.0.7:
   version "0.0.7"
   resolved "https://registry.yarnpkg.com/amd-name-resolver/-/amd-name-resolver-0.0.7.tgz#814301adfe8a2f109f6e84d5e935196efb669615"
@@ -295,6 +305,18 @@ assert-plus@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/assert-plus/-/assert-plus-0.2.0.tgz#d74e1b87e7affc0db8aadb7021f3fe48101ab234"
 
+ast-traverse@~0.1.1:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/ast-traverse/-/ast-traverse-0.1.1.tgz#69cf2b8386f19dcda1bb1e05d68fe359d8897de6"
+
+ast-types@0.8.12:
+  version "0.8.12"
+  resolved "https://registry.yarnpkg.com/ast-types/-/ast-types-0.8.12.tgz#a0d90e4351bb887716c83fd637ebf818af4adfcc"
+
+ast-types@0.8.15:
+  version "0.8.15"
+  resolved "https://registry.yarnpkg.com/ast-types/-/ast-types-0.8.15.tgz#8eef0827f04dff0ec8857ba925abe3fea6194e52"
+
 ast-types@0.9.6:
   version "0.9.6"
   resolved "https://registry.yarnpkg.com/ast-types/-/ast-types-0.9.6.tgz#102c9e9e9005d3e7e3829bf0c4fa24ee862ee9b9"
@@ -356,6 +378,57 @@ babel-code-frame@^6.22.0, babel-code-frame@^6.26.0:
     esutils "^2.0.2"
     js-tokens "^3.0.2"
 
+babel-core@^5.0.0:
+  version "5.8.38"
+  resolved "https://registry.yarnpkg.com/babel-core/-/babel-core-5.8.38.tgz#1fcaee79d7e61b750b00b8e54f6dfc9d0af86558"
+  dependencies:
+    babel-plugin-constant-folding "^1.0.1"
+    babel-plugin-dead-code-elimination "^1.0.2"
+    babel-plugin-eval "^1.0.1"
+    babel-plugin-inline-environment-variables "^1.0.1"
+    babel-plugin-jscript "^1.0.4"
+    babel-plugin-member-expression-literals "^1.0.1"
+    babel-plugin-property-literals "^1.0.1"
+    babel-plugin-proto-to-assign "^1.0.3"
+    babel-plugin-react-constant-elements "^1.0.3"
+    babel-plugin-react-display-name "^1.0.3"
+    babel-plugin-remove-console "^1.0.1"
+    babel-plugin-remove-debugger "^1.0.1"
+    babel-plugin-runtime "^1.0.7"
+    babel-plugin-undeclared-variables-check "^1.0.2"
+    babel-plugin-undefined-to-void "^1.1.6"
+    babylon "^5.8.38"
+    bluebird "^2.9.33"
+    chalk "^1.0.0"
+    convert-source-map "^1.1.0"
+    core-js "^1.0.0"
+    debug "^2.1.1"
+    detect-indent "^3.0.0"
+    esutils "^2.0.0"
+    fs-readdir-recursive "^0.1.0"
+    globals "^6.4.0"
+    home-or-tmp "^1.0.0"
+    is-integer "^1.0.4"
+    js-tokens "1.0.1"
+    json5 "^0.4.0"
+    lodash "^3.10.0"
+    minimatch "^2.0.3"
+    output-file-sync "^1.1.0"
+    path-exists "^1.0.0"
+    path-is-absolute "^1.0.0"
+    private "^0.1.6"
+    regenerator "0.8.40"
+    regexpu "^1.3.0"
+    repeating "^1.1.2"
+    resolve "^1.1.6"
+    shebang-regex "^1.0.0"
+    slash "^1.0.0"
+    source-map "^0.5.0"
+    source-map-support "^0.2.10"
+    to-fast-properties "^1.0.0"
+    trim-right "^1.0.0"
+    try-resolve "^1.0.0"
+
 babel-core@^6.14.0, babel-core@^6.26.0:
   version "6.26.0"
   resolved "https://registry.yarnpkg.com/babel-core/-/babel-core-6.26.0.tgz#af32f78b31a6fcef119c87b0fd8d9753f03a0bb8"
@@ -506,6 +579,14 @@ babel-plugin-check-es2015-constants@^6.22.0:
   dependencies:
     babel-runtime "^6.22.0"
 
+babel-plugin-constant-folding@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/babel-plugin-constant-folding/-/babel-plugin-constant-folding-1.0.1.tgz#8361d364c98e449c3692bdba51eff0844290aa8e"
+
+babel-plugin-dead-code-elimination@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/babel-plugin-dead-code-elimination/-/babel-plugin-dead-code-elimination-1.0.2.tgz#5f7c451274dcd7cccdbfbb3e0b85dd28121f0f65"
+
 babel-plugin-debug-macros@^0.1.10, babel-plugin-debug-macros@^0.1.11:
   version "0.1.11"
   resolved "https://registry.yarnpkg.com/babel-plugin-debug-macros/-/babel-plugin-debug-macros-0.1.11.tgz#6c562bf561fccd406ce14ab04f42c218cf956605"
@@ -518,10 +599,56 @@ babel-plugin-ember-modules-api-polyfill@^2.0.1:
   dependencies:
     ember-rfc176-data "^0.3.0"
 
+babel-plugin-eval@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/babel-plugin-eval/-/babel-plugin-eval-1.0.1.tgz#a2faed25ce6be69ade4bfec263f70169195950da"
+
 babel-plugin-htmlbars-inline-precompile@^0.2.3:
   version "0.2.3"
   resolved "https://registry.yarnpkg.com/babel-plugin-htmlbars-inline-precompile/-/babel-plugin-htmlbars-inline-precompile-0.2.3.tgz#cd365e278af409bfa6be7704c4354beee742446b"
 
+babel-plugin-inline-environment-variables@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/babel-plugin-inline-environment-variables/-/babel-plugin-inline-environment-variables-1.0.1.tgz#1f58ce91207ad6a826a8bf645fafe68ff5fe3ffe"
+
+babel-plugin-jscript@^1.0.4:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/babel-plugin-jscript/-/babel-plugin-jscript-1.0.4.tgz#8f342c38276e87a47d5fa0a8bd3d5eb6ccad8fcc"
+
+babel-plugin-member-expression-literals@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/babel-plugin-member-expression-literals/-/babel-plugin-member-expression-literals-1.0.1.tgz#cc5edb0faa8dc927170e74d6d1c02440021624d3"
+
+babel-plugin-property-literals@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/babel-plugin-property-literals/-/babel-plugin-property-literals-1.0.1.tgz#0252301900192980b1c118efea48ce93aab83336"
+
+babel-plugin-proto-to-assign@^1.0.3:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/babel-plugin-proto-to-assign/-/babel-plugin-proto-to-assign-1.0.4.tgz#c49e7afd02f577bc4da05ea2df002250cf7cd123"
+  dependencies:
+    lodash "^3.9.3"
+
+babel-plugin-react-constant-elements@^1.0.3:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/babel-plugin-react-constant-elements/-/babel-plugin-react-constant-elements-1.0.3.tgz#946736e8378429cbc349dcff62f51c143b34e35a"
+
+babel-plugin-react-display-name@^1.0.3:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/babel-plugin-react-display-name/-/babel-plugin-react-display-name-1.0.3.tgz#754fe38926e8424a4e7b15ab6ea6139dee0514fc"
+
+babel-plugin-remove-console@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/babel-plugin-remove-console/-/babel-plugin-remove-console-1.0.1.tgz#d8f24556c3a05005d42aaaafd27787f53ff013a7"
+
+babel-plugin-remove-debugger@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/babel-plugin-remove-debugger/-/babel-plugin-remove-debugger-1.0.1.tgz#fd2ea3cd61a428ad1f3b9c89882ff4293e8c14c7"
+
+babel-plugin-runtime@^1.0.7:
+  version "1.0.7"
+  resolved "https://registry.yarnpkg.com/babel-plugin-runtime/-/babel-plugin-runtime-1.0.7.tgz#bf7c7d966dd56ecd5c17fa1cb253c9acb7e54aaf"
+
 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"
@@ -731,6 +858,16 @@ babel-plugin-transform-strict-mode@^6.24.1:
     babel-runtime "^6.22.0"
     babel-types "^6.24.1"
 
+babel-plugin-undeclared-variables-check@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/babel-plugin-undeclared-variables-check/-/babel-plugin-undeclared-variables-check-1.0.2.tgz#5cf1aa539d813ff64e99641290af620965f65dee"
+  dependencies:
+    leven "^1.0.2"
+
+babel-plugin-undefined-to-void@^1.1.6:
+  version "1.1.6"
+  resolved "https://registry.yarnpkg.com/babel-plugin-undefined-to-void/-/babel-plugin-undefined-to-void-1.1.6.tgz#7f578ef8b78dfae6003385d8417a61eda06e2f81"
+
 babel-polyfill@^6.16.0:
   version "6.26.0"
   resolved "https://registry.yarnpkg.com/babel-polyfill/-/babel-polyfill-6.26.0.tgz#379937abc67d7895970adc621f284cd966cf2153"
@@ -826,6 +963,10 @@ babel-types@^6.19.0, babel-types@^6.24.1, babel-types@^6.26.0:
     lodash "^4.17.4"
     to-fast-properties "^1.0.3"
 
+babylon@^5.8.38:
+  version "5.8.38"
+  resolved "https://registry.yarnpkg.com/babylon/-/babylon-5.8.38.tgz#ec9b120b11bf6ccd4173a18bf217e60b79859ffd"
+
 babylon@^6.18.0:
   version "6.18.0"
   resolved "https://registry.yarnpkg.com/babylon/-/babylon-6.18.0.tgz#af2f3b88fa6f5c1e4c634d1a0f8eac4f55b395e3"
@@ -892,6 +1033,10 @@ block-stream@*:
   dependencies:
     inherits "~2.0.0"
 
+bluebird@^2.9.33:
+  version "2.11.0"
+  resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-2.11.0.tgz#534b9033c022c9579c56ba3b3e5a5caafbb650e1"
+
 bluebird@^3.1.1, bluebird@^3.4.6:
   version "3.5.1"
   resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-3.5.1.tgz#d9551f9de98f1fcda1e683d17ee91a0602ee2eb9"
@@ -940,7 +1085,7 @@ bower-endpoint-parser@0.2.2:
   version "0.2.2"
   resolved "https://registry.yarnpkg.com/bower-endpoint-parser/-/bower-endpoint-parser-0.2.2.tgz#00b565adbfab6f2d35addde977e97962acbcb3f6"
 
-brace-expansion@^1.1.7:
+brace-expansion@^1.0.0, brace-expansion@^1.1.7:
   version "1.1.8"
   resolved "https://registry.yarnpkg.com/brace-expansion/-/brace-expansion-1.1.8.tgz#c07b211c7c952ec1f8efd51a77ef0d1d3990a292"
   dependencies:
@@ -955,6 +1100,10 @@ braces@^1.8.2:
     preserve "^0.2.0"
     repeat-element "^1.1.2"
 
+breakable@~1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/breakable/-/breakable-1.0.0.tgz#784a797915a38ead27bad456b5572cb4bbaa78c1"
+
 broccoli-asset-rev@^2.4.5:
   version "2.6.0"
   resolved "https://registry.yarnpkg.com/broccoli-asset-rev/-/broccoli-asset-rev-2.6.0.tgz#0633fc3a0b2ba0c2c1d56fa9feb7b331fc83be6d"
@@ -971,6 +1120,21 @@ broccoli-asset-rewrite@^1.1.0:
   dependencies:
     broccoli-filter "^1.2.3"
 
+broccoli-babel-transpiler@^5.6.2:
+  version "5.7.2"
+  resolved "https://registry.yarnpkg.com/broccoli-babel-transpiler/-/broccoli-babel-transpiler-5.7.2.tgz#756c30544775144e984333b7115f42c916ba08e0"
+  dependencies:
+    babel-core "^5.0.0"
+    broccoli-funnel "^1.0.0"
+    broccoli-merge-trees "^1.0.0"
+    broccoli-persistent-filter "^1.4.2"
+    clone "^0.2.0"
+    hash-for-dep "^1.0.2"
+    heimdalljs-logger "^0.1.7"
+    json-stable-stringify "^1.0.0"
+    rsvp "^3.5.0"
+    workerpool "^2.2.1"
+
 broccoli-babel-transpiler@^6.0.0, broccoli-babel-transpiler@^6.1.2:
   version "6.1.2"
   resolved "https://registry.yarnpkg.com/broccoli-babel-transpiler/-/broccoli-babel-transpiler-6.1.2.tgz#26019c045b5ea3e44cfef62821302f9bd483cabd"
@@ -1186,7 +1350,7 @@ broccoli-middleware@^1.0.0:
     handlebars "^4.0.4"
     mime "^1.2.11"
 
-broccoli-persistent-filter@^1.0.3, broccoli-persistent-filter@^1.1.6, broccoli-persistent-filter@^1.2.0, broccoli-persistent-filter@^1.4.0:
+broccoli-persistent-filter@^1.0.3, broccoli-persistent-filter@^1.1.6, broccoli-persistent-filter@^1.2.0, broccoli-persistent-filter@^1.4.0, broccoli-persistent-filter@^1.4.2:
   version "1.4.3"
   resolved "https://registry.yarnpkg.com/broccoli-persistent-filter/-/broccoli-persistent-filter-1.4.3.tgz#3511bc52fc53740cda51621f58a28152d9911bc1"
   dependencies:
@@ -1320,7 +1484,7 @@ callsites@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/callsites/-/callsites-0.2.0.tgz#afab96262910a7f33c19a5775825c69f34e350ca"
 
-camelcase@^1.0.2:
+camelcase@^1.0.2, camelcase@^1.2.1:
   version "1.2.1"
   resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-1.2.1.tgz#9bb5304d2e0b56698b2c758b08a3eaa9daa58a39"
 
@@ -1473,6 +1637,10 @@ cliui@^2.1.0:
     right-align "^0.1.1"
     wordwrap "0.0.2"
 
+clone@^0.2.0:
+  version "0.2.0"
+  resolved "https://registry.yarnpkg.com/clone/-/clone-0.2.0.tgz#c6126a90ad4f72dbf5acdb243cc37724fe93fc1f"
+
 clone@^2.0.0:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/clone/-/clone-2.1.1.tgz#d217d1e961118e3ac9a4b8bba3285553bf647cdb"
@@ -1521,10 +1689,24 @@ commander@2.9.0:
   dependencies:
     graceful-readlink ">= 1.0.0"
 
-commander@^2.6.0, commander@~2.11.0:
+commander@^2.5.0, commander@^2.6.0, commander@~2.11.0:
   version "2.11.0"
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.11.0.tgz#157152fd1e7a6c8d98a5b715cf376df928004563"
 
+commoner@~0.10.3:
+  version "0.10.8"
+  resolved "https://registry.yarnpkg.com/commoner/-/commoner-0.10.8.tgz#34fc3672cd24393e8bb47e70caa0293811f4f2c5"
+  dependencies:
+    commander "^2.5.0"
+    detective "^4.3.1"
+    glob "^5.0.15"
+    graceful-fs "^4.1.2"
+    iconv-lite "^0.4.5"
+    mkdirp "^0.5.0"
+    private "^0.1.6"
+    q "^1.1.2"
+    recast "^0.11.17"
+
 component-bind@1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/component-bind/-/component-bind-1.0.0.tgz#00c608ab7dcd93897c0009651b1d3a8e1e73bbd1"
@@ -1613,7 +1795,7 @@ continuable-cache@^0.3.1:
   version "0.3.1"
   resolved "https://registry.yarnpkg.com/continuable-cache/-/continuable-cache-0.3.1.tgz#bd727a7faed77e71ff3985ac93351a912733ad0f"
 
-convert-source-map@^1.5.0:
+convert-source-map@^1.1.0, convert-source-map@^1.5.0:
   version "1.5.0"
   resolved "https://registry.yarnpkg.com/convert-source-map/-/convert-source-map-1.5.0.tgz#9acd70851c6d5dfdd93d9282e5edf94a03ff46b5"
 
@@ -1629,6 +1811,10 @@ copy-dereference@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/copy-dereference/-/copy-dereference-1.0.0.tgz#6b131865420fd81b413ba994b44d3655311152b6"
 
+core-js@^1.0.0:
+  version "1.2.7"
+  resolved "https://registry.yarnpkg.com/core-js/-/core-js-1.2.7.tgz#652294c14651db28fa93bd2d5ff2983a4f08c636"
+
 core-js@^2.4.0, core-js@^2.5.0:
   version "2.5.1"
   resolved "https://registry.yarnpkg.com/core-js/-/core-js-2.5.1.tgz#ae6874dc66937789b80754ff5428df66819ca50b"
@@ -1711,6 +1897,25 @@ deep-is@~0.1.3:
   version "0.1.3"
   resolved "https://registry.yarnpkg.com/deep-is/-/deep-is-0.1.3.tgz#b369d6fb5dbc13eecf524f91b070feedc357cf34"
 
+defined@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/defined/-/defined-1.0.0.tgz#c98d9bcef75674188e110969151199e39b1fa693"
+
+defs@~1.1.0:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/defs/-/defs-1.1.1.tgz#b22609f2c7a11ba7a3db116805c139b1caffa9d2"
+  dependencies:
+    alter "~0.2.0"
+    ast-traverse "~0.1.1"
+    breakable "~1.0.0"
+    esprima-fb "~15001.1001.0-dev-harmony-fb"
+    simple-fmt "~0.1.0"
+    simple-is "~0.2.0"
+    stringmap "~0.2.2"
+    stringset "~0.2.1"
+    tryor "~0.1.2"
+    yargs "~3.27.0"
+
 del@^2.0.2:
   version "2.2.2"
   resolved "https://registry.yarnpkg.com/del/-/del-2.2.2.tgz#c12c981d067846c84bcaf862cff930d907ffd1a8"
@@ -1745,12 +1950,27 @@ detect-file@^0.1.0:
   dependencies:
     fs-exists-sync "^0.1.0"
 
+detect-indent@^3.0.0:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/detect-indent/-/detect-indent-3.0.1.tgz#9dc5e5ddbceef8325764b9451b02bc6d54084f75"
+  dependencies:
+    get-stdin "^4.0.1"
+    minimist "^1.1.0"
+    repeating "^1.1.0"
+
 detect-indent@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/detect-indent/-/detect-indent-4.0.0.tgz#f76d064352cdf43a1cb6ce619c4ee3a9475de208"
   dependencies:
     repeating "^2.0.0"
 
+detective@^4.3.1:
+  version "4.5.0"
+  resolved "https://registry.yarnpkg.com/detective/-/detective-4.5.0.tgz#6e5a8c6b26e6c7a254b1c6b6d7490d98ec91edd1"
+  dependencies:
+    acorn "^4.0.3"
+    defined "^1.0.0"
+
 diff@^3.2.0:
   version "3.4.0"
   resolved "https://registry.yarnpkg.com/diff/-/diff-3.4.0.tgz#b1d85507daf3964828de54b37d0d73ba67dda56c"
@@ -1792,6 +2012,16 @@ ember-ajax@^3.0.0:
   dependencies:
     ember-cli-babel "^6.0.0"
 
+ember-cli-babel@^5.1.6:
+  version "5.2.4"
+  resolved "https://registry.yarnpkg.com/ember-cli-babel/-/ember-cli-babel-5.2.4.tgz#5ce4f46b08ed6f6d21e878619fb689719d6e8e13"
+  dependencies:
+    broccoli-babel-transpiler "^5.6.2"
+    broccoli-funnel "^1.0.0"
+    clone "^2.0.0"
+    ember-cli-version-checker "^1.0.2"
+    resolve "^1.1.2"
+
 ember-cli-babel@^6.0.0, ember-cli-babel@^6.0.0-beta.7, ember-cli-babel@^6.6.0, ember-cli-babel@^6.8.1:
   version "6.8.2"
   resolved "https://registry.yarnpkg.com/ember-cli-babel/-/ember-cli-babel-6.8.2.tgz#eac2785964f4743f4c815cd53c6288f00cc087d7"
@@ -1982,7 +2212,7 @@ ember-cli-valid-component-name@^1.0.0:
   dependencies:
     silent-error "^1.0.0"
 
-ember-cli-version-checker@^1.1.6, ember-cli-version-checker@^1.1.7, ember-cli-version-checker@^1.2.0, ember-cli-version-checker@^1.3.1:
+ember-cli-version-checker@^1.0.2, ember-cli-version-checker@^1.1.6, ember-cli-version-checker@^1.1.7, ember-cli-version-checker@^1.2.0, ember-cli-version-checker@^1.3.1:
   version "1.3.1"
   resolved "https://registry.yarnpkg.com/ember-cli-version-checker/-/ember-cli-version-checker-1.3.1.tgz#0bc2d134c830142da64bf9627a0eded10b61ae72"
   dependencies:
@@ -2186,6 +2416,12 @@ ember-try@^0.2.15:
     rsvp "^3.0.17"
     semver "^5.1.0"
 
+ember-weakmap@2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/ember-weakmap/-/ember-weakmap-2.0.0.tgz#71c6819a8bfd0b077ae17ca1d9053fc5db06e4ac"
+  dependencies:
+    ember-cli-babel "^5.1.6"
+
 encodeurl@~1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/encodeurl/-/encodeurl-1.0.1.tgz#79e3d58655346909fe6f0f45a5de68103b294d20"
@@ -2314,6 +2550,14 @@ espree@^3.5.1:
     acorn "^5.1.1"
     acorn-jsx "^3.0.0"
 
+esprima-fb@~15001.1001.0-dev-harmony-fb:
+  version "15001.1001.0-dev-harmony-fb"
+  resolved "https://registry.yarnpkg.com/esprima-fb/-/esprima-fb-15001.1001.0-dev-harmony-fb.tgz#43beb57ec26e8cf237d3dd8b33e42533577f2659"
+
+esprima@^2.6.0:
+  version "2.7.3"
+  resolved "https://registry.yarnpkg.com/esprima/-/esprima-2.7.3.tgz#96e3b70d5779f6ad49cd032673d1c312767ba581"
+
 esprima@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/esprima/-/esprima-4.0.0.tgz#4499eddcd1110e0b218bacf2fa7f7f59f55ca804"
@@ -2343,7 +2587,7 @@ estraverse@^4.0.0, estraverse@^4.1.0, estraverse@^4.1.1, estraverse@^4.2.0:
   version "4.2.0"
   resolved "https://registry.yarnpkg.com/estraverse/-/estraverse-4.2.0.tgz#0dee3fed31fcd469618ce7342099fc1afa0bdb13"
 
-esutils@^2.0.2:
+esutils@^2.0.0, esutils@^2.0.2:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/esutils/-/esutils-2.0.2.tgz#0abf4f1caa5bcb1f7a9d8acc6dea4faaa04bac9b"
 
@@ -2691,6 +2935,10 @@ fs-extra@^4.0.0, fs-extra@^4.0.1:
     jsonfile "^4.0.0"
     universalify "^0.1.0"
 
+fs-readdir-recursive@^0.1.0:
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/fs-readdir-recursive/-/fs-readdir-recursive-0.1.2.tgz#315b4fb8c1ca5b8c47defef319d073dad3568059"
+
 fs-tree-diff@^0.5.2, fs-tree-diff@^0.5.3, fs-tree-diff@^0.5.4, fs-tree-diff@^0.5.6:
   version "0.5.7"
   resolved "https://registry.yarnpkg.com/fs-tree-diff/-/fs-tree-diff-0.5.7.tgz#315e2b098d5fe7f622880ac965b1b051868ac871"
@@ -2791,7 +3039,7 @@ glob@7.1.1:
     once "^1.3.0"
     path-is-absolute "^1.0.0"
 
-glob@^5.0.10:
+glob@^5.0.10, glob@^5.0.15:
   version "5.0.15"
   resolved "https://registry.yarnpkg.com/glob/-/glob-5.0.15.tgz#1bc936b9e02f4a603fcc222ecf7633d30b8b93b1"
   dependencies:
@@ -2828,6 +3076,10 @@ global-prefix@^0.1.4:
     is-windows "^0.2.0"
     which "^1.2.12"
 
+globals@^6.4.0:
+  version "6.4.1"
+  resolved "https://registry.yarnpkg.com/globals/-/globals-6.4.1.tgz#8498032b3b6d1cc81eebc5f79690d8fe29fabf4f"
+
 globals@^9.17.0, globals@^9.18.0:
   version "9.18.0"
   resolved "https://registry.yarnpkg.com/globals/-/globals-9.18.0.tgz#aa3896b3e69b487f17e31ed2143d69a8e30c2d8a"
@@ -2843,7 +3095,7 @@ globby@^5.0.0:
     pify "^2.0.0"
     pinkie-promise "^2.0.0"
 
-graceful-fs@^4.1.11, graceful-fs@^4.1.2, graceful-fs@^4.1.3, graceful-fs@^4.1.6, graceful-fs@^4.1.9:
+graceful-fs@^4.1.11, graceful-fs@^4.1.2, graceful-fs@^4.1.3, graceful-fs@^4.1.4, graceful-fs@^4.1.6, graceful-fs@^4.1.9:
   version "4.1.11"
   resolved "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-4.1.11.tgz#0e8bdfe4d1ddb8854d64e04ea7c00e2a026e5658"
 
@@ -2958,6 +3210,13 @@ hoek@2.x.x:
   version "2.16.3"
   resolved "https://registry.yarnpkg.com/hoek/-/hoek-2.16.3.tgz#20bb7403d3cea398e91dc4710a8ff1b8274a25ed"
 
+home-or-tmp@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/home-or-tmp/-/home-or-tmp-1.0.0.tgz#4b9f1e40800c3e50c6c27f781676afcce71f3985"
+  dependencies:
+    os-tmpdir "^1.0.1"
+    user-home "^1.1.1"
+
 home-or-tmp@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/home-or-tmp/-/home-or-tmp-2.0.0.tgz#e36c3f2d2cae7d746a857e38d18d5f32a7882db8"
@@ -3003,7 +3262,7 @@ http-signature@~1.1.0:
     jsprim "^1.2.2"
     sshpk "^1.7.0"
 
-iconv-lite@0.4.19, iconv-lite@^0.4.17, iconv-lite@~0.4.13:
+iconv-lite@0.4.19, iconv-lite@^0.4.17, iconv-lite@^0.4.5, iconv-lite@~0.4.13:
   version "0.4.19"
   resolved "https://registry.yarnpkg.com/iconv-lite/-/iconv-lite-0.4.19.tgz#f7468f60135f5e5dad3399c0a81be9a1603a082b"
 
@@ -3092,6 +3351,10 @@ invariant@^2.2.2:
   dependencies:
     loose-envify "^1.0.0"
 
+invert-kv@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/invert-kv/-/invert-kv-1.0.0.tgz#104a8e4aaca6d3d8cd157a8ef8bfab2d7a3ffdb6"
+
 ipaddr.js@1.5.2:
   version "1.5.2"
   resolved "https://registry.yarnpkg.com/ipaddr.js/-/ipaddr.js-1.5.2.tgz#d4b505bde9946987ccf0fc58d9010ff9607e3fa0"
@@ -3150,6 +3413,12 @@ is-glob@^2.0.0, is-glob@^2.0.1:
   dependencies:
     is-extglob "^1.0.0"
 
+is-integer@^1.0.4:
+  version "1.0.7"
+  resolved "https://registry.yarnpkg.com/is-integer/-/is-integer-1.0.7.tgz#6bde81aacddf78b659b6629d629cadc51a886d5c"
+  dependencies:
+    is-finite "^1.0.0"
+
 is-number@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/is-number/-/is-number-2.1.0.tgz#01fcbbb393463a548f2f466cce16dece49db908f"
@@ -3260,6 +3529,10 @@ js-reporters@1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/js-reporters/-/js-reporters-1.2.0.tgz#7cf2cb698196684790350d0c4ca07f4aed9ec17e"
 
+js-tokens@1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-1.0.1.tgz#cc435a5c8b94ad15acb7983140fc80182c89aeae"
+
 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"
@@ -3317,6 +3590,10 @@ json3@3.3.2:
   version "3.3.2"
   resolved "https://registry.yarnpkg.com/json3/-/json3-3.3.2.tgz#3c0434743df93e2f5c42aee7b19bcb483575f4e1"
 
+json5@^0.4.0:
+  version "0.4.0"
+  resolved "https://registry.yarnpkg.com/json5/-/json5-0.4.0.tgz#054352e4c4c80c86c0923877d449de176a732c8d"
+
 json5@^0.5.1:
   version "0.5.1"
   resolved "https://registry.yarnpkg.com/json5/-/json5-0.5.1.tgz#1eade7acc012034ad84e2396767ead9fa5495821"
@@ -3368,6 +3645,12 @@ lazy-cache@^1.0.3:
   version "1.0.4"
   resolved "https://registry.yarnpkg.com/lazy-cache/-/lazy-cache-1.0.4.tgz#a1d78fc3a50474cb80845d3b3b6e1da49a446e8e"
 
+lcid@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/lcid/-/lcid-1.0.0.tgz#308accafa0bc483a3867b4b6f2b9506251d1b835"
+  dependencies:
+    invert-kv "^1.0.0"
+
 leek@0.0.24:
   version "0.0.24"
   resolved "https://registry.yarnpkg.com/leek/-/leek-0.0.24.tgz#e400e57f0e60d8ef2bd4d068dc428a54345dbcda"
@@ -3376,6 +3659,10 @@ leek@0.0.24:
     lodash.assign "^3.2.0"
     rsvp "^3.0.21"
 
+leven@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/leven/-/leven-1.0.2.tgz#9144b6eebca5f1d0680169f1a6770dcea60b75c3"
+
 levn@^0.3.0, levn@~0.3.0:
   version "0.3.0"
   resolved "https://registry.yarnpkg.com/levn/-/levn-0.3.0.tgz#3b09924edf9f083c0490fdd4c0bc4421e04764ee"
@@ -3719,7 +4006,7 @@ lodash.values@~2.3.0:
   dependencies:
     lodash.keys "~2.3.0"
 
-lodash@^3.10.1:
+lodash@^3.10.0, lodash@^3.10.1, lodash@^3.9.3:
   version "3.10.1"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-3.10.1.tgz#5bf45e8e49ba4189e17d482789dfd15bd140b7b6"
 
@@ -3881,11 +4168,17 @@ mimic-fn@^1.0.0:
   dependencies:
     brace-expansion "^1.1.7"
 
+minimatch@^2.0.3:
+  version "2.0.10"
+  resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-2.0.10.tgz#8d087c39c6b38c001b97fca7ce6d0e1e80afbac7"
+  dependencies:
+    brace-expansion "^1.0.0"
+
 minimist@0.0.8:
   version "0.0.8"
   resolved "https://registry.yarnpkg.com/minimist/-/minimist-0.0.8.tgz#857fcabfc3397d2625b8228262e86aa7a011b05d"
 
-minimist@^1.1.1, minimist@^1.2.0:
+minimist@^1.1.0, minimist@^1.1.1, minimist@^1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/minimist/-/minimist-1.2.0.tgz#a35008b20f41383eec1fb914f4cd5df79a264284"
 
@@ -4121,6 +4414,12 @@ os-homedir@^1.0.0, os-homedir@^1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/os-homedir/-/os-homedir-1.0.2.tgz#ffbc4988336e0e833de0c168c7ef152121aa7fb3"
 
+os-locale@^1.4.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/os-locale/-/os-locale-1.4.0.tgz#20f9f17ae29ed345e8bde583b13d2009803c14d9"
+  dependencies:
+    lcid "^1.0.0"
+
 os-shim@^0.1.2:
   version "0.1.3"
   resolved "https://registry.yarnpkg.com/os-shim/-/os-shim-0.1.3.tgz#6b62c3791cf7909ea35ed46e17658bb417cb3917"
@@ -4136,6 +4435,14 @@ osenv@^0.1.3, osenv@^0.1.4:
     os-homedir "^1.0.0"
     os-tmpdir "^1.0.0"
 
+output-file-sync@^1.1.0:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/output-file-sync/-/output-file-sync-1.1.2.tgz#d0a33eefe61a205facb90092e826598d5245ce76"
+  dependencies:
+    graceful-fs "^4.1.4"
+    mkdirp "^0.5.1"
+    object-assign "^4.1.0"
+
 p-finally@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/p-finally/-/p-finally-1.0.0.tgz#3fbcfb15b899a44123b34b6dcc18b724336a2cae"
@@ -4185,6 +4492,10 @@ parseurl@~1.3.2:
   version "1.3.2"
   resolved "https://registry.yarnpkg.com/parseurl/-/parseurl-1.3.2.tgz#fc289d4ed8993119460c156253262cdc8de65bf3"
 
+path-exists@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/path-exists/-/path-exists-1.0.0.tgz#d5a8998eb71ef37a74c34eb0d9eba6e878eea081"
+
 path-exists@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/path-exists/-/path-exists-3.0.0.tgz#ce0ebeaa5f78cb18925ea7d810d7b59b010fd515"
@@ -4298,6 +4609,10 @@ punycode@^1.4.1:
   version "1.4.1"
   resolved "https://registry.yarnpkg.com/punycode/-/punycode-1.4.1.tgz#c0d5a63b2718800ad8e1eb0fa5269c84dd41845e"
 
+q@^1.1.2:
+  version "1.5.1"
+  resolved "https://registry.yarnpkg.com/q/-/q-1.5.1.tgz#7e32f75b41381291d04611f1bf14109ac00651d7"
+
 qs@6.5.1, qs@^6.4.0:
   version "6.5.1"
   resolved "https://registry.yarnpkg.com/qs/-/qs-6.5.1.tgz#349cdf6eef89ec45c12d7d5eb3fc0c870343a6d8"
@@ -4396,7 +4711,25 @@ readdirp@^2.0.0:
     readable-stream "^2.0.2"
     set-immediate-shim "^1.0.1"
 
-recast@^0.11.3:
+recast@0.10.33:
+  version "0.10.33"
+  resolved "https://registry.yarnpkg.com/recast/-/recast-0.10.33.tgz#942808f7aa016f1fa7142c461d7e5704aaa8d697"
+  dependencies:
+    ast-types "0.8.12"
+    esprima-fb "~15001.1001.0-dev-harmony-fb"
+    private "~0.1.5"
+    source-map "~0.5.0"
+
+recast@^0.10.10:
+  version "0.10.43"
+  resolved "https://registry.yarnpkg.com/recast/-/recast-0.10.43.tgz#b95d50f6d60761a5f6252e15d80678168491ce7f"
+  dependencies:
+    ast-types "0.8.15"
+    esprima-fb "~15001.1001.0-dev-harmony-fb"
+    private "~0.1.5"
+    source-map "~0.5.0"
+
+recast@^0.11.17, recast@^0.11.3:
   version "0.11.23"
   resolved "https://registry.yarnpkg.com/recast/-/recast-0.11.23.tgz#451fd3004ab1e4df9b4e4b66376b2a21912462d3"
   dependencies:
@@ -4431,6 +4764,17 @@ regenerator-transform@^0.10.0:
     babel-types "^6.19.0"
     private "^0.1.6"
 
+regenerator@0.8.40:
+  version "0.8.40"
+  resolved "https://registry.yarnpkg.com/regenerator/-/regenerator-0.8.40.tgz#a0e457c58ebdbae575c9f8cd75127e93756435d8"
+  dependencies:
+    commoner "~0.10.3"
+    defs "~1.1.0"
+    esprima-fb "~15001.1001.0-dev-harmony-fb"
+    private "~0.1.5"
+    recast "0.10.33"
+    through "~2.3.8"
+
 regex-cache@^0.4.2:
   version "0.4.4"
   resolved "https://registry.yarnpkg.com/regex-cache/-/regex-cache-0.4.4.tgz#75bdc58a2a1496cec48a12835bc54c8d562336dd"
@@ -4445,6 +4789,16 @@ regexpu-core@^2.0.0:
     regjsgen "^0.2.0"
     regjsparser "^0.1.4"
 
+regexpu@^1.3.0:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/regexpu/-/regexpu-1.3.0.tgz#e534dc991a9e5846050c98de6d7dd4a55c9ea16d"
+  dependencies:
+    esprima "^2.6.0"
+    recast "^0.10.10"
+    regenerate "^1.2.1"
+    regjsgen "^0.2.0"
+    regjsparser "^0.1.4"
+
 regjsgen@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/regjsgen/-/regjsgen-0.2.0.tgz#6c016adeac554f75823fe37ac05b92d5a4edb1f7"
@@ -4467,6 +4821,12 @@ repeat-string@^1.5.2:
   version "1.6.1"
   resolved "https://registry.yarnpkg.com/repeat-string/-/repeat-string-1.6.1.tgz#8dcae470e1c88abc2d600fff4a776286da75e637"
 
+repeating@^1.1.0, repeating@^1.1.2:
+  version "1.1.3"
+  resolved "https://registry.yarnpkg.com/repeating/-/repeating-1.1.3.tgz#3d4114218877537494f97f77f9785fab810fa4ac"
+  dependencies:
+    is-finite "^1.0.0"
+
 repeating@^2.0.0:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/repeating/-/repeating-2.0.1.tgz#5214c53a926d3552707527fbab415dbc08d06dda"
@@ -4528,7 +4888,7 @@ resolve@1.3.2:
   dependencies:
     path-parse "^1.0.5"
 
-resolve@^1.1.6, resolve@^1.3.0, resolve@^1.3.3, resolve@^1.4.0:
+resolve@^1.1.2, resolve@^1.1.6, resolve@^1.3.0, resolve@^1.3.3, resolve@^1.4.0:
   version "1.5.0"
   resolved "https://registry.yarnpkg.com/resolve/-/resolve-1.5.0.tgz#1f09acce796c9a762579f31b2c1cc4c3cddf9f36"
   dependencies:
@@ -4691,6 +5051,10 @@ simple-dom@^0.3.0:
   version "0.3.2"
   resolved "https://registry.yarnpkg.com/simple-dom/-/simple-dom-0.3.2.tgz#0663d10f1556f1500551d518f56e3aba0871371d"
 
+simple-fmt@~0.1.0:
+  version "0.1.0"
+  resolved "https://registry.yarnpkg.com/simple-fmt/-/simple-fmt-0.1.0.tgz#191bf566a59e6530482cb25ab53b4a8dc85c3a6b"
+
 simple-html-tokenizer@^0.3.0:
   version "0.3.0"
   resolved "https://registry.yarnpkg.com/simple-html-tokenizer/-/simple-html-tokenizer-0.3.0.tgz#9b8b5559d80e331a544dd13dd59382e5d0d94411"
@@ -4699,6 +5063,10 @@ simple-html-tokenizer@^0.4.1:
   version "0.4.3"
   resolved "https://registry.yarnpkg.com/simple-html-tokenizer/-/simple-html-tokenizer-0.4.3.tgz#9b00b766e30058b4bb377c0d4f97566a13ab1be1"
 
+simple-is@~0.2.0:
+  version "0.2.0"
+  resolved "https://registry.yarnpkg.com/simple-is/-/simple-is-0.2.0.tgz#2abb75aade39deb5cc815ce10e6191164850baf0"
+
 slash@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/slash/-/slash-1.0.0.tgz#c41f2f6c39fc16d1cd17ad4b5d896114ae470d55"
@@ -4769,6 +5137,12 @@ sort-package-json@^1.4.0:
   dependencies:
     sort-object-keys "^1.1.1"
 
+source-map-support@^0.2.10:
+  version "0.2.10"
+  resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.2.10.tgz#ea5a3900a1c1cb25096a0ae8cc5c2b4b10ded3dc"
+  dependencies:
+    source-map "0.1.32"
+
 source-map-support@^0.4.15:
   version "0.4.18"
   resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.4.18.tgz#0286a6de8be42641338594e97ccea75f0a2c585f"
@@ -4783,13 +5157,19 @@ source-map-url@^0.4.0:
   version "0.4.0"
   resolved "https://registry.yarnpkg.com/source-map-url/-/source-map-url-0.4.0.tgz#3e935d7ddd73631b97659956d55128e87b5084a3"
 
+source-map@0.1.32:
+  version "0.1.32"
+  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.1.32.tgz#c8b6c167797ba4740a8ea33252162ff08591b266"
+  dependencies:
+    amdefine ">=0.0.4"
+
 source-map@0.4.x, source-map@^0.4.2, source-map@^0.4.4:
   version "0.4.4"
   resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.4.4.tgz#eba4f5da9c0dc999de68032d8b4f76173652036b"
   dependencies:
     amdefine ">=0.0.4"
 
-source-map@^0.5.6, source-map@~0.5.0, source-map@~0.5.1:
+source-map@^0.5.0, source-map@^0.5.6, source-map@~0.5.0, source-map@~0.5.1:
   version "0.5.7"
   resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.5.7.tgz#8a039d2d1021d22d1ea14c80d8ea468ba2ef3fcc"
 
@@ -4849,6 +5229,10 @@ sshpk@^1.7.0:
     jsbn "~0.1.0"
     tweetnacl "~0.14.0"
 
+stable@~0.1.3:
+  version "0.1.6"
+  resolved "https://registry.yarnpkg.com/stable/-/stable-0.1.6.tgz#910f5d2aed7b520c6e777499c1f32e139fdecb10"
+
 "statuses@>= 1.3.1 < 2":
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/statuses/-/statuses-1.4.0.tgz#bb73d446da2796106efcc1b601a253d6c46bd087"
@@ -4886,6 +5270,14 @@ string_decoder@~1.0.3:
   dependencies:
     safe-buffer "~5.1.0"
 
+stringmap@~0.2.2:
+  version "0.2.2"
+  resolved "https://registry.yarnpkg.com/stringmap/-/stringmap-0.2.2.tgz#556c137b258f942b8776f5b2ef582aa069d7d1b1"
+
+stringset@~0.2.1:
+  version "0.2.1"
+  resolved "https://registry.yarnpkg.com/stringset/-/stringset-0.2.1.tgz#ef259c4e349344377fcd1c913dd2e848c9c042b5"
+
 stringstream@~0.0.4:
   version "0.0.5"
   resolved "https://registry.yarnpkg.com/stringstream/-/stringstream-0.0.5.tgz#4e484cd4de5a0bbbee18e46307710a8a81621878"
@@ -5035,7 +5427,7 @@ text-table@~0.2.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/textextensions/-/textextensions-2.1.0.tgz#1be0dc2a0dc244d44be8a09af6a85afb93c4dbc3"
 
-through@^2.3.6, through@^2.3.8:
+through@^2.3.6, through@^2.3.8, through@~2.3.8:
   version "2.3.8"
   resolved "https://registry.yarnpkg.com/through/-/through-2.3.8.tgz#0dd4c9ffaabc357960b1b724115d7e0e86a2e1f5"
 
@@ -5076,7 +5468,7 @@ to-array@0.1.4:
   version "0.1.4"
   resolved "https://registry.yarnpkg.com/to-array/-/to-array-0.1.4.tgz#17e6c11f73dd4f3d74cda7a4ff3238e9ad9bf890"
 
-to-fast-properties@^1.0.3:
+to-fast-properties@^1.0.0, 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"
 
@@ -5096,14 +5488,22 @@ tree-sync@^1.2.1, tree-sync@^1.2.2:
     quick-temp "^0.1.5"
     walk-sync "^0.2.7"
 
-trim-right@^1.0.1:
+trim-right@^1.0.0, trim-right@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/trim-right/-/trim-right-1.0.1.tgz#cb2e1203067e0c8de1f614094b9fe45704ea6003"
 
+try-resolve@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/try-resolve/-/try-resolve-1.0.1.tgz#cfde6fabd72d63e5797cfaab873abbe8e700e912"
+
 tryit@^1.0.1:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/tryit/-/tryit-1.0.3.tgz#393be730a9446fd1ead6da59a014308f36c289cb"
 
+tryor@~0.1.2:
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/tryor/-/tryor-0.1.2.tgz#8145e4ca7caff40acde3ccf946e8b8bb75b4172b"
+
 tunnel-agent@^0.6.0:
   version "0.6.0"
   resolved "https://registry.yarnpkg.com/tunnel-agent/-/tunnel-agent-0.6.0.tgz#27a5dea06b36b04a0a9966774b290868f0fc40fd"
@@ -5194,6 +5594,10 @@ untildify@^2.1.0:
   dependencies:
     os-homedir "^1.0.0"
 
+user-home@^1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/user-home/-/user-home-1.1.1.tgz#2b5be23a32b63a7c9deb8d0f28d485724a3df190"
+
 username-sync@1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/username-sync/-/username-sync-1.0.1.tgz#1cde87eefcf94b8822984d938ba2b797426dae1f"
@@ -5286,6 +5690,10 @@ window-size@0.1.0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/window-size/-/window-size-0.1.0.tgz#5438cd2ea93b202efa3a19fe8887aee7c94f9c9d"
 
+window-size@^0.1.2:
+  version "0.1.4"
+  resolved "https://registry.yarnpkg.com/window-size/-/window-size-0.1.4.tgz#f8e1aa1ee5a53ec5bf151ffa09742a6ad7697876"
+
 wordwrap@0.0.2:
   version "0.0.2"
   resolved "https://registry.yarnpkg.com/wordwrap/-/wordwrap-0.0.2.tgz#b79669bb42ecb409f83d583cad52ca17eaa1643f"
@@ -5349,6 +5757,10 @@ xtend@^4.0.0, xtend@~4.0.0:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/xtend/-/xtend-4.0.1.tgz#a5c6d532be656e23db820efb943a1f04998d63af"
 
+y18n@^3.2.0:
+  version "3.2.1"
+  resolved "https://registry.yarnpkg.com/y18n/-/y18n-3.2.1.tgz#6d15fba884c08679c0d77e88e7759e811e07fa41"
+
 yallist@^2.1.2:
   version "2.1.2"
   resolved "https://registry.yarnpkg.com/yallist/-/yallist-2.1.2.tgz#1c11f9218f076089a47dd512f93c6699a6a81d52"
@@ -5369,6 +5781,17 @@ yargs@~3.10.0:
     decamelize "^1.0.0"
     window-size "0.1.0"
 
+yargs@~3.27.0:
+  version "3.27.0"
+  resolved "https://registry.yarnpkg.com/yargs/-/yargs-3.27.0.tgz#21205469316e939131d59f2da0c6d7f98221ea40"
+  dependencies:
+    camelcase "^1.2.1"
+    cliui "^2.1.0"
+    decamelize "^1.0.0"
+    os-locale "^1.4.0"
+    window-size "^0.1.2"
+    y18n "^3.2.0"
+
 yeast@0.1.2:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/yeast/-/yeast-0.1.2.tgz#008e06d8094320c372dbc2f8ed76a0ca6c8ac419"