ci: Create GitHub release with changelog

Author: PSanetra

.github/workflows/main.yaml

@@ -3,8 +3,6 @@ on:
   push:
     tags:
       - v*
-    branches:
-      - master
 jobs:
   test:
     name: Unit Tests
@@ -16,4 +14,35 @@ jobs:
       - uses: actions/setup-go@v2
         with:
           go-version: '^1.13.1'
-      - run: go test ./...
+      - run: go test ./...
+  release:
+    name: Release
+    runs-on: ubuntu-latest
+    needs: test
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          ref: ${{ github.ref }}
+      - name: Get version
+        id: get_version
+        run: |
+          VERSION="$(echo '${{ github.ref }}' | grep -oE '[0-9]+\.[0-9]+\.[0-9]+' | tr -d '\n')"
+          echo "::set-output name=version::${VERSION}"
+      - run: git fetch --unshallow
+      - name: Generate Changelog
+        id: generate_changelog
+        uses: PSanetra/git-semver-actions/markdown-log@master
+        with:
+          version: ${{ steps.get_version.outputs.version }}
+      - name: Create Release
+        id: create_release
+        uses: actions/create-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: v${{ steps.get_version.outputs.version }}
+          release_name: Release ${{ steps.get_version.outputs.version }}
+          body: |
+            ${{ steps.generate_changelog.outputs.changelog }}
+          draft: false
+          prerelease: false