Adding checking for release lables to make sure they are supplied bef…

…ore merging.

.github/workflows/check-for-release-tag.yml

@@ -0,0 +1,29 @@
+name: Check For Release Tag
+
+on:
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  check_for_release_tag:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+
+    # checkout the master branch to compare changelog.txt
+    - uses: actions/checkout@v2
+      with:
+        ref: master
+        path: ./masterbranch
+
+    - name: Verify that a release label exists on the PR
+      if: ${{ ! ( contains(github.event.pull_request.labels.*.name, 'release/patch') || contains(github.event.pull_request.labels.*.name, 'release/minor') || contains(github.event.pull_request.labels.*.name, 'release/major') || contains(github.event.pull_request.labels.*.name, 'release/skip') ) }}
+      run: echo "Please label your PR with a release label" && exit 1
+
+    # ensure changelog.txt has been updated in this PR by comparing it to the one in the master branch
+    - name: Verify that changelog.txt has been updated
+      if: ${{ contains(github.event.pull_request.labels.*.name, 'release/patch') || contains(github.event.pull_request.labels.*.name, 'release/minor') || contains(github.event.pull_request.labels.*.name, 'release/major') }}
+      run: |
+        ! cmp --silent <(tail -n+2 changelog.txt) <(tail -n+2 ./masterbranch/changelog.txt) || { echo 'Changelog.txt must be updated for release PRs. Please update changelog.txt' && exit 1 ; }