Add GitHub actions workflow to publish to PyPI

Author: hackebrot

.github/workflows/upload-to-pypi.yml

@@ -0,0 +1,28 @@
+name: Upload to PyPI
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    container:
+      image: python:3.6
+      env:
+        PYTHONDONTWRITEBYTECODE: TRUE
+        PYTHONUNBUFFERED: TRUE
+
+    steps:
+      - uses: actions/checkout@v1
+      - name: Install dependencies
+        run: >-
+          python -m pip install --upgrade --no-cache-dir
+          pip wheel pep517 twine
+      - name: Package project
+        run: python -m pep517.build .
+      - name: Upload distributions
+        env:
+          TWINE_USERNAME: __token__
+          TWINE_PASSWORD: ${{ secrets.PYPI_TOKEN }}
+        run: twine upload dist/*