add github actions

Author: mvberg

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

@@ -0,0 +1,39 @@
+name: Publish Python 🐍 distributions 📦 to PyPI and TestPyPI
+
+on: push
+
+jobs:
+  build-n-publish:
+    name: Build and publish Python 🐍 distributions 📦 to PyPI and TestPyPI
+    runs-on: ubuntu-18.04
+    steps:
+    - uses: actions/checkout@master
+    - name: Set up Python 3.7
+      uses: actions/setup-python@v1
+      with:
+        python-version: 3.7
+    - name: Install pep517
+      run: >-
+        python -m
+        pip install
+        pep517
+        --user
+    - name: Build a binary wheel and a source tarball
+      run: >-
+        python -m
+        pep517.build
+        --source
+        --binary
+        --out-dir dist/
+        .
+    - name: Publish distribution 📦 to Test PyPI
+      uses: pypa/gh-action-pypi-publish@master
+      with:
+        password: ${{ secrets.test_pypi_token }}
+        repository_url: https://test.pypi.org/legacy/    
+    - name: Publish distribution 📦 to PyPI
+      if: startsWith(github.ref, 'refs/tags')
+      uses: pypa/gh-action-pypi-publish@master
+      with:
+        password: ${{ secrets.pypi_token }}
+