changelog workflow (#1)

* changelog workflow

* Release

* labeler

* labeler

* patch

* review

.github/auto-label.json

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+
+{
+  "rules": {
+    "patch": ["*"],
+    "review": ["*"],
+    "frontend": ["*.js", "*.scss", "*.css", "*.twig", ".theme"],
+    "backend": ["*.php", "*.module"],
+    "ci": [".circleci", ".github"]
+  }
+}

.github/workflows/changelog_update.yml

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+on:
+  release:
+    type: published
+
+jobs:
+  comment:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python
+        uses: actions/setup-python@v1
+        with:
+          python-version: "3.8"
+      - name: Update version
+        id: version
+        run: |
+          echo "GITHUB_REF is a tag you set for the release"
+          echo "Your GitHub ref: ${GITHUB_REF}"
+          VERSION=`echo "${GITHUB_REF}" | cut -f 3 -d "/"`
+          echo "Preparing version ${VERSION}"
+          echo "__version__ = \"${VERSION}\"" > __version__.py
+          echo "##[set-output name=version;]$(echo ${VERSION})"
+      - uses: vemel/[email protected]
+        id: changelog
+        with:
+          version: ${{ steps.version.outputs.version }}
+      - name: Create Pull Request
+        uses: peter-evans/create-pull-request@v2
+        with:
+          commit-message: Release ${{ steps.version.outputs.version }}
+          labels: release, bot
+          title: "Release ${{ steps.version.outputs.version }}"
+          body: |
+            # Release ${{ steps.version.outputs.version }}
+
+            Merge this PR to update your version and changelog!
+
+            ## Included Pull Requests
+
+            ${{ steps.changelog.outputs.pulls_list_md }}

.github/workflows/labeler.yml

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+name: PR Labeler
+on:
+  pull_request:
+    types: [opened, synchronize]
+jobs:
+  pr-labeler:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: banyan/[email protected]
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/release.yml

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+# .github/workflows/release.yml
+name: Release
+
+on:
+  pull_request:
+    types: closed
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Tag
+        uses: K-Phoen/semver-release-action@master
+        with:
+          release_branch: master
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}