Setup autodeployment (#758)

Author: asvetlov

.github/workflows/ci.yml

@@ -41,3 +41,29 @@ jobs:
         make cov-ci
         python setup.py check -rms
         codecov
+
+  deploy:
+    name: Deploy
+    runs-on: ubuntu-latest
+    needs: test
+    # Run only on pushing a tag
+    if: github.event_name == 'push' && contains(github.ref, 'refs/tags/')
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v2
+    - name: Setup Python 3.8
+      uses: actions/setup-python@v2
+      with:
+        python-version: 3.8
+    - name: Install dependencies
+      run:
+        python -m pip install -U pip wheel twine
+    - name: Make dists
+      run:
+        python setup.py sdist bdist_wheel
+    - name: PyPI upload
+      env:
+        TWINE_USERNAME: __token__
+        TWINE_PASSWORD: ${{ secrets.PYPI_TOKEN }}
+      run: |
+        twine upload dist/*