Backport TravisCI to GitHub Actions migration

.github/workflows/ci-build.yml

@@ -0,0 +1,99 @@
+name: CI Build
+
+on:
+  push:
+    branches:
+      - main
+      - master
+      - v*
+    tags:
+      - v*
+  pull_request:
+
+jobs:
+  test:
+    name: Tests
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v2
+        with:
+          node-version: 6.x
+
+      - run: yarn install --frozen-lockfile
+      - run: yarn lint:hbs
+      - run: yarn lint:js
+      - run: yarn test
+
+  floating-dependencies:
+    name: "Floating Dependencies"
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v2
+        with:
+          # not running Node.js 6 because of incompatibilities in transitive dependencies
+          node-version: 12.x
+
+      - run: yarn install --no-lockfile --ignore-engines
+      - run: yarn test
+
+  try-scenarios:
+    name: "Try: ${{ matrix.ember-try-scenario }}"
+
+    runs-on: ubuntu-latest
+
+    needs: test
+
+    strategy:
+      matrix:
+        ember-try-scenario:
+          - ember-lts-2.18
+          - ember-lts-3.4
+          - ember-lts-3.20
+          - ember-lts-3.24
+          - ember-lts-3.28
+          # disabled due to incompatibility with Ember.js 4
+          # - ember-release
+          # - ember-beta
+          # - ember-canary
+          - ember-default-with-jquery
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v2
+        with:
+          # not running Node.js 6 because of incompatibilities in transitive dependencies
+          node-version: 12.x
+
+      - name: install dependencies
+        run: yarn install --frozen-lockfile
+      - name: test
+        run: node_modules/.bin/ember try:one ${{ matrix.ember-try-scenario }} --skip-cleanup
+
+  publish:
+    name: Publish to npm
+    if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/v')
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Install node
+        uses: actions/setup-node@v2
+        with:
+          node-version: 14.x
+          registry-url: 'https://registry.npmjs.org'
+
+      - name: install dependencies
+        run: yarn install --frozen-lockfile
+
+      - name: auto-dist-tag
+        run: npx auto-dist-tag@1 --write
+
+      - name: publish to npm
+        run: npm publish
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_AUTH_TOKEN }}

config/ember-try.js

@@ -9,6 +9,7 @@ module.exports = function() {
     getChannelURL('canary')
   ]).then((urls) => {
     return {
+      useYarn: true,
       scenarios: [
         {
           name: 'ember-lts-2.18',
@@ -30,6 +31,30 @@ module.exports = function() {
             }
           }
         },
+        {
+          name: 'ember-lts-3.20',
+          npm: {
+            devDependencies: {
+              'ember-source': '~3.20.0'
+            }
+          }
+        },
+        {
+          name: 'ember-lts-3.24',
+          npm: {
+            devDependencies: {
+              'ember-source': '~3.24.0'
+            }
+          }
+        },
+        {
+          name: 'ember-lts-3.28',
+          npm: {
+            devDependencies: {
+              'ember-source': '~3.28.0'
+            }
+          }
+        },
         {
           name: 'ember-release',
           npm: {