Automatic GitHub releases from git tags

.github/workflows/main.yml

@@ -148,3 +148,25 @@ jobs:
           ./vendor/bin/phpunit --coverage-clover coverage-clover.xml
           curl -LO https://scrutinizer-ci.com/ocular.phar
           php ocular.phar code-coverage:upload --format=php-clover coverage-clover.xml
+
+  release:
+    runs-on: ubuntu-latest
+    if: github.event_name == 'push' && contains(github.ref, 'refs/tags/')
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          ref: ${{ github.ref }} # Otherwise our annotated tag is not fetched and we cannot get correct version
+
+      # Create release
+      - name: Get release info
+        id: release-info
+        run: |
+          echo "::set-output name=subject::$(git tag --format '%(contents:subject)' --points-at)"
+          git tag --format '%(contents:body)' --points-at > release-body.txt
+      - uses: actions/create-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} # This token is provided by Actions, you do not need to create your own token
+        with:
+          tag_name: ${{ github.ref }}
+          release_name: ${{ steps.release-info.outputs.subject }}
+          body_path: release-body.txt