Automated release setup (#170)

.github/PULL_REQUEST_TEMPLATE.md

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+## What does this PR do?
+
+[Description here]
+
+## Checklist
+
+- [ ] All new functionality has tests.
+- [ ] All tests are passing.
+- [ ] New or changed API methods have been documented.
+- [ ] `npm run format` has been run
+
+## CHANGELOG
+
+- [CHANGED] Describe your change here. Look at CHANGELOG.md to see the format.

.github/workflows/release.yml

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+on:
+  push:
+    branches: [master]
+
+jobs:
+  check-release-tag:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - name: Prepare tag
+        id: prepare_tag
+        continue-on-error: true
+        run: |
+          export TAG=v$(jq -r '.version' package.json)
+          echo "TAG=$TAG" >> $GITHUB_ENV
+
+          export CHECK_TAG=$(git tag | grep $TAG)
+          if [[ $CHECK_TAG ]]; then
+            echo "Skipping because release tag already exists"
+            exit 1
+          fi
+      - name: Output
+        id: release_output
+        if: ${{ steps.prepare_tag.outcome == 'success' }}
+        run: |
+          echo "::set-output name=tag::${{ env.TAG }}"
+    outputs:
+      tag: ${{ steps.release_output.outputs.tag }}
+
+  create-github-release:
+    runs-on: ubuntu-latest
+    needs: check-release-tag
+    if: ${{ needs.check-release-tag.outputs.tag }}
+    steps:
+      - uses: actions/checkout@v2
+      - name: Prepare tag
+        run: |
+          export TAG=v$(jq -r '.version' package.json)
+          echo "TAG=$TAG" >> $GITHUB_ENV
+      - name: Setup git
+        run: |
+          git config user.email "[email protected]"
+          git config user.name "Pusher CI"
+      - name: Prepare description
+        run: |
+          csplit -s CHANGELOG.md "/##/" {1}
+          cat xx01 > CHANGELOG.tmp
+      - name: Create Release
+        uses: actions/create-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ env.TAG }}
+          release_name: ${{ env.TAG }}
+          body_path: CHANGELOG.tmp
+          draft: false
+          prerelease: false
+
+  publish-to-npm:
+    runs-on: ubuntu-latest
+    needs: create-github-release
+    steps:
+      - uses: actions/checkout@v2
+      - uses: flood-io/is-published-on-npm@8478347e2650eb228d303975415458183d0a37e4
+        id: is-published
+      - run: echo "This version is already published on NPM"
+        if: ${{ steps.is-published.outputs.published == 'true' }}
+      - uses: actions/setup-node@v2
+        if: ${{ steps.is-published.outputs.published == 'false' }}
+        with:
+          node-version: "14"
+          registry-url: https://registry.npmjs.org/
+      - run: npm install
+        if: ${{ steps.is-published.outputs.published == 'false' }}
+      - run: npm publish --access public
+        if: ${{ steps.is-published.outputs.published == 'false' }}
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+          NPM_TOKEN: ${{ secrets.NPM_TOKEN }}

.github/workflows/release_pr.yml

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+name: release
+
+on:
+  pull_request:
+    types: [labeled]
+    branches:
+      - master
+
+jobs:
+  prepare-release:
+    name: Prepare release
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Get current version
+        shell: bash
+        run: |
+          CURRENT_VERSION=$(jq -r '.version' package.json)
+          echo "CURRENT_VERSION=$CURRENT_VERSION" >> $GITHUB_ENV
+      - uses: actions/checkout@v2
+        with:
+          repository: pusher/actions
+          token: ${{ secrets.PUSHER_CI_GITHUB_PRIVATE_TOKEN }}
+          path: .github/actions
+      - uses: ./.github/actions/prepare-version-bump
+        id: bump
+        with:
+          current_version: ${{ env.CURRENT_VERSION }}
+      - uses: actions/setup-node@v2
+        with:
+          node-version: "14"
+      - run: npm install
+      - name: Push
+        shell: bash
+        run: |
+          echo "$(jq '.version = "${{ steps.bump.outputs.new_version }}"' package.json)" > package.json
+
+          make build_all
+
+          git add package.json CHANGELOG.md dist/
+          git commit -m "Bump to version ${{ steps.bump.outputs.new_version }}"
+          git push