create GH release automatically

Author: jenschude

.github/workflows/ci.yml

@@ -1,8 +1,11 @@
 # https://help.github.com/en/categories/automating-your-workflow-with-github-actions
 
 on:
-  - pull_request
-  - push
+  pull_request:
+  push:
+    branches: *
+    tags:
+      - '[0-9]+.[0-9]+.[0-9]+*'
 
 name: CI
 
@@ -116,6 +119,7 @@ jobs:
           key: php${{ matrix.php-version }}-composer-${{ matrix.dependencies }}-${{ hashFiles('**/composer.json') }}
           restore-keys: |
             php${{ matrix.php-version }}-composer-${{ matrix.dependencies }}-
+
       - name: Install lowest dependencies with composer
         if: matrix.dependencies == 'lowest'
         run: composer update --no-ansi --no-interaction --no-progress --no-suggest --prefer-lowest
@@ -132,3 +136,22 @@ jobs:
         env:
           CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
         run: bash <(curl -s https://codecov.io/bash) || true
+
+  release:
+    if: startsWith( github.ref, 'refs/tags/')
+    name: Create release
+
+    runs-on: ubuntu-latest
+    needs: ["coding-guidelines", "type-checker", "tests"]
+
+    steps:
+      - name: Create Release
+        id: create_release
+        uses: actions/create-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ github.ref }}
+          release_name: ${{ github.ref }}
+          draft: false
+          prerelease: false