Switch from Travis CI to GitHub Actions (#11)

Author: ste93cry

.github/workflows/publish-release.yaml

@@ -0,0 +1,29 @@
+name: Prepare Release
+
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: Version to release
+        required: true
+      force:
+        description: Force a release even when there are release-blockers (optional)
+        required: false
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    name: Release version
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          token: ${{ secrets.GH_RELEASE_PAT }}
+          fetch-depth: 0
+
+      - name: Prepare release
+        uses: getsentry/action-prepare-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GH_RELEASE_PAT }}
+        with:
+          version: ${{ github.event.inputs.version }}
+          force: ${{ github.event.inputs.force }}

.github/workflows/tests.yaml

@@ -0,0 +1,69 @@
+name: Continuous Integration
+
+on:
+  pull_request: null
+  push:
+    branches:
+      - master
+
+jobs:
+  tests:
+    name: Tests
+    runs-on: ubuntu-latest
+    env:
+      SYMFONY_REQUIRE: ${{ matrix.symfony-version }}
+    strategy:
+      fail-fast: false
+      matrix:
+        php:
+          - '7.2'
+          - '7.3'
+          - '7.4'
+          - '8.0'
+          - '8.1'
+        symfony-version:
+          - 3.4.*
+          - 4.4.*
+          - 5.*
+          - 6.*
+        dependencies:
+          - highest
+        exclude:
+          - php: '7.2'
+            symfony-version: 6.*
+            dependencies: highest
+          - php: '7.3'
+            symfony-version: 6.*
+            dependencies: highest
+          - php: '7.4'
+            symfony-version: 6.*
+            dependencies: highest
+        include:
+          - php: '7.2'
+            symfony-version: 3.4.*
+            dependencies: lowest
+          - php: '7.2'
+            symfony-version: 4.4.*
+            dependencies: lowest
+          - php: '7.2'
+            symfony-version: 5.*
+            dependencies: lowest
+          - php: '8.0'
+            symfony-version: 6.*
+            dependencies: lowest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php }}
+          tools: flex
+
+      - name: Install dependencies
+        uses: ramsey/composer-install@v1
+        with:
+          dependency-versions: ${{ matrix.dependencies }}
+          composer-options: --prefer-dist