Update all dependencies december 2018 (#437)

* Update most dependencies

* Run ember-cli-upgrade

.eslintignore

@@ -8,6 +8,7 @@
 
 # dependencies
 /bower_components/
+/node_modules/
 
 # misc
 /coverage/

.npmignore

@@ -17,6 +17,7 @@
 /.watchmanconfig
 /bower.json
 /config/ember-try.js
+/CONTRIBUTING.md
 /ember-cli-build.js
 /testem.js
 /tests/

.travis.yml

@@ -19,6 +19,12 @@ env:
     # See https://git.io/vdao3 for details.
     - JOBS=1
 
+branches:
+  only:
+    - master
+    # npm version tags
+    - /^v\d+\.\d+\.\d+/
+
 jobs:
   fail_fast: true
   allow_failures:

CONTRIBUTING.md

@@ -0,0 +1,26 @@
+# How To Contribute
+
+## Installation
+
+* `git clone <repository-url>`
+* `cd my-addon`
+* `npm install`
+
+## Linting
+
+* `npm run lint:hbs`
+* `npm run lint:js`
+* `npm run lint:js -- --fix`
+
+## Running tests
+
+* `ember test` – Runs the test suite on the current Ember version
+* `ember test --server` – Runs the test suite in "watch mode"
+* `ember try:each` – Runs the test suite against multiple Ember versions
+
+## Running the dummy application
+
+* `ember serve`
+* Visit the dummy application at [http://localhost:4200](http://localhost:4200).
+
+For more information on using ember-cli, visit [https://ember-cli.com/](https://ember-cli.com/).

README.md

@@ -140,6 +140,6 @@ test suite.
 If you want to provide an [Ember Twiddle](www.ember-twiddle.com) with an issue/reproduction **you need to add the following to the end of your template**:
 `<div id="ember-basic-dropdown-wormhole"></div>`
 
-Since `Ember Twiddle` does not run `EmberCLI's` hooks this `div` won't be added to the application and it's required (There's an issue in [Ember Twiddle](https://github.com/joostdevries/twiddle-backend/issues/35) tracking this). 
+Since `Ember Twiddle` does not run `EmberCLI's` hooks this `div` won't be added to the application and it's required (There's an issue in [Ember Twiddle](https://github.com/joostdevries/twiddle-backend/issues/35) tracking this).
 
-In order to create the Ember Twiddle you'll also need to add a reference to `ember-basic-dropdown: version` in the `addons` section of `twiddle.json`  
+In order to create the Ember Twiddle you'll also need to add a reference to `ember-basic-dropdown: version` in the `addons` section of `twiddle.json`

package.json

@@ -25,37 +25,37 @@
   "devDependencies": {
     "@ember/optional-features": "^0.7.0",
     "broccoli-asset-rev": "^3.0.0",
-    "ember-cli": "~3.5.0",
+    "ember-cli": "~3.6.0",
     "ember-cli-dependency-checker": "^3.0.0",
     "ember-cli-eslint": "^4.2.3",
     "ember-cli-fastboot": "^2.0.0",
     "ember-cli-htmlbars-inline-precompile": "^1.0.5",
     "ember-cli-inject-live-reload": "^2.0.1",
-    "ember-cli-sass": "^8.0.0",
+    "ember-cli-sass": "^8.0.1",
     "ember-cli-template-lint": "~1.0.0-beta.1",
     "ember-cli-uglify": "^2.1.0",
     "ember-code-example-component": "^0.2.0",
     "ember-code-snippet": "2.3.1",
-    "ember-concurrency": "^0.8.22",
+    "ember-concurrency": "^0.8.26",
     "ember-disable-prototype-extensions": "^1.1.3",
     "ember-export-application-global": "^2.0.0",
     "ember-font-awesome": "^4.0.0-rc.4",
-    "ember-href-to": "~1.15.1",
-    "ember-load-initializers": "^1.1.0",
+    "ember-href-to": "~2.0.1",
+    "ember-load-initializers": "^2.0.0",
     "ember-maybe-import-regenerator": "^0.1.6",
-    "ember-qunit": "^3.5.3",
+    "ember-qunit": "^4.2.0",
     "ember-resolver": "^5.0.1",
-    "ember-source": "~3.5.0",
+    "ember-source": "~3.6.0",
     "ember-source-channel-url": "^1.1.0",
     "ember-truth-helpers": "2.1.0",
     "ember-try": "^1.1.0",
-    "eslint-plugin-ember": "^5.2.0",
-    "eslint-plugin-node": "^7.0.1",
+    "eslint-plugin-ember": "^6.0.1",
+    "eslint-plugin-node": "^8.0.0",
     "loader.js": "^4.7.0",
     "node-sass": "*",
-    "prember": "~0.4.0",
+    "prember": "~1.0.0",
     "prember-crawler": "^0.1.0",
-    "qunit-dom": "^0.8.0",
+    "qunit-dom": "^0.8.3",
     "simple-git": "^1.10.0"
   },
   "keywords": [
@@ -71,8 +71,8 @@
     "test": "tests"
   },
   "dependencies": {
-    "ember-cli-babel": "^7.1.0",
-    "ember-cli-htmlbars": "^3.0.0",
+    "ember-cli-babel": "^7.2.0",
+    "ember-cli-htmlbars": "^3.0.1",
     "ember-maybe-in-element": "^0.2.0"
   },
   "ember-addon": {