add CI configuration

.github/workflows/ci.yml

@@ -0,0 +1,54 @@
+on:
+  pull_request:
+    branches:
+      - master
+  push:
+    branches:
+      - master
+    tags:
+      - "*"
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: setup Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: "3.8"
+      - name: install
+        run: pip install .
+      - name: compile
+        run: python -m compileall .
+
+  publish:
+    runs-on: ubuntu-latest
+    needs: test
+    if: success() && github.event_name == 'push' && startsWith(github.ref, 'refs/tags')
+    steps:
+      - uses: actions/checkout@v2
+      - name: setup Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: "3.8"
+      - name: install
+        run: pip install .[dev]
+      - name: get changelog entry
+        id: changelog
+        run: python tools/extract-changelog-entry.py ${GITHUB_REF#refs/tags/} > changelog_entry
+      - name: build package
+        run: python setup.py bdist_wheel
+      - name: publish package
+        uses: pypa/[email protected]
+        with:
+          user: __token__
+          password: ${{ secrets.PYPI_API_TOKEN }}
+      - name: create Release
+        uses: actions/create-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ github.ref }}
+          release_name: Release ${{ github.ref }}
+          body_path: changelog_entry