Initial GitHub actions support

.github/workflows/pythonpackage.yml

@@ -0,0 +1,29 @@
+name: Python package
+
+on: [push, pull_request]
+
+jobs:
+  Test:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      max-parallel: 6
+      matrix:
+        os: [ "ubuntu-latest", "windows-latest" ]
+        python-version: [ "3.7", "3.8", "3.9", "3.10", "3.11" ]
+
+    steps:
+      - uses: actions/checkout@v3.5.0
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v4.5.0
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip wheel
+          pip install twisted trio "tornado<5.0.0" coverage
+      - name: Test
+        run: |
+          coverage run ./setup.py test
+          coverage report
+#      - name: Coveralls
+#        uses: coverallsapp/github-action@v1