Update to Ember 3.0.0.

Done using `npx ember update`
Doesn’t enable new ember eslint rules for now.

.eslintrc.js

@@ -7,9 +7,12 @@ module.exports = {
             'experimentalObjectRestSpread': true,
         },
     },
+    plugins: [
+        'ember',
+    ],
     extends: [
         'eslint:recommended',
-        'plugin:ember-suave/recommended',
+        'plugin:ember-suave/recommended', // to be replaced with 'plugin:ember/recommended',
     ],
     env: {
         browser: true,
@@ -31,4 +34,24 @@ module.exports = {
         'ember-suave/no-direct-property-access': 'off',
         'ember-suave/require-access-in-comments': 'off',
     },
+    overrides: [
+        // node files
+        {
+            files: [
+                'testem.js',
+                'ember-cli-build.js',
+                'config/**/*.js',
+                'lib/*/index.js',
+            ],
+            parserOptions: {
+                sourceType: 'script',
+                ecmaVersion: 2015,
+            },
+            env: {
+                browser: false,
+                node: true,
+            },
+        },
+    ],
+
 };

.travis.yml

@@ -19,6 +19,7 @@ env:
 
 before_install:
   - nvm install 8
+  - npm config set spin false
 
 install:
   - cargo install --force diesel_cli --vers 1.0.0 --no-default-features --features postgres && export PATH=$HOME/.cargo/bin:$PATH
@@ -53,6 +54,7 @@ matrix:
     - cargo build
     - cargo test
     - npm install
+    - npm run lint:js
     - npm test
   - rust: beta
     script:

config/targets.js

@@ -1,13 +1,16 @@
-/* eslint-env node */
+'use strict';
+
+// These are the browsers we actually are attempting to support:
+const browsers = [
+  'last 2 Chrome versions',
+  'last 1 Firefox version',
+  'Firefox ESR',
+  'last 1 Safari version',
+  'last 1 iOS version',
+  'last 1 Edge version',
+  'last 1 UCAndroid version',
+];
+
 module.exports = {
-  browsers: [
-    // These are the browsers we actually are attempting to support:
-    'last 2 Chrome versions',
-    'last 1 Firefox version',
-    'Firefox ESR',
-    'last 1 Safari version',
-    'last 1 iOS version',
-    'last 1 Edge version',
-    'last 1 UCAndroid version'
-  ]
+  browsers
 };