Release to testpypi after tests and to pypi on tag (#85)

.github/workflows/build.yml

@@ -27,3 +27,35 @@ jobs:
       - name: Run tests
         run: make test
 
+  release:
+    name: Release
+    needs: test
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v3
+        with:
+          python-version: "3.10"
+
+      - name: Install requirements
+        run: python -m pip install wheel
+
+      - name: Build a distribution
+        run: python setup.py sdist bdist_wheel
+
+      - name: Publish package to TestPyPI
+        uses: pypa/gh-action-pypi-publish@master
+        with:
+          user: __token__
+          password: ${{ secrets.TEST_PYPI_API_TOKEN }}
+          repository_url: https://test.pypi.org/legacy/
+          skip_existing: true
+
+      - name: Publish package to PyPI
+        uses: pypa/gh-action-pypi-publish@master
+        if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags')
+        with:
+          user: __token__
+          password: ${{ secrets.PYPI_API_TOKEN }}