Added automatic release workflow, for use with GitHub Actions.

.github/workflows/automatic-release.yml

@@ -0,0 +1,38 @@
+name: automatic-release
+
+on:
+    workflow_dispatch:
+        inputs:
+            release_type:
+                description: Release type
+                required: true
+                type: choice
+                options:
+                    - patch
+                    - minor
+                    - major
+
+jobs:
+    release:
+        name: Release
+        runs-on: ubuntu-20.04
+        steps:
+            - name: Checkout repository
+              uses: actions/checkout@v4
+            - name: Setup Git
+              run: |
+                git config --local user.email "action@github.com"
+                git config --local user.name "GitHub Action"
+            - name: Setup Python
+              uses: actions/setup-python@v4
+              with:
+                python-version: '3.8'
+            - name: Install prerequisites
+              run: pip install -r release-requirements.txt
+            - name: Execute release
+              env:
+                SEMVER_BUMP: ${{ github.event.inputs.release_type }}
+                TWINE_REPOSITORY: ${{ vars.TWINE_REPOSITORY }}
+                TWINE_USERNAME: ${{ secrets.TWINE_USERNAME }}
+                TWINE_PASSWORD: ${{ secrets.TWINE_PASSWORD }}
+              run: ./release $SEMVER_BUMP