Move to Github Actions

.github/workflows/ci.yml

@@ -0,0 +1,27 @@
+name: CI
+
+on:
+    pull_request: null
+    push:
+        branches:
+            - master
+
+jobs:
+    tests:
+        runs-on: ubuntu-latest
+        strategy:
+            matrix:
+                php: ['5.3', '5.4', '5.5', '5.6', '7.0', '7.1', '7.2', '7.3', '7.4', '8.0']
+
+        name: PHP ${{ matrix.php }} tests
+        steps:
+            -   uses: actions/checkout@v2
+
+            -   uses: shivammathur/setup-php@v1
+                with:
+                    php-version: ${{ matrix.php }}
+                    coverage: none
+                    tools: phpunit
+
+            -   run: composer require psr/log psr/container
+            -   run: phpunit -v --colors=always tests