Migrate CI to github actions

.github/workflows/main.yml

@@ -0,0 +1,44 @@
+name: tests
+
+on: [push, pull_request]
+
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+    if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.event.pull_request.base.repo.full_name
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+        - python-version: "3.6"
+          env:
+            TOXENV: py
+        - python-version: "3.7"
+          env:
+            TOXENV: py
+        - python-version: "3.8"
+          env:
+            TOXENV: py
+        - python-version: "3.9"
+          env:
+            TOXENV: py
+        - python-version: "3.10"
+          env:
+            TOXENV: py
+        - python-version: "3.10"
+          env:
+            TOXENV: mypy
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v4
+      with:
+        python-version: ${{ matrix.python-version }}
+
+    - name: Run tests
+      env: ${{ matrix.env }}
+      run: |
+        pip install -U tox
+        tox

.github/workflows/publish.yml

@@ -0,0 +1,30 @@
+name: Publish
+on: [push]
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    if: startsWith(github.event.ref, 'refs/tags/')
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Set up Python 3.10
+      uses: actions/setup-python@v4
+      with:
+        python-version: "3.10"
+
+    - name: Check Tag
+      id: check-release-tag
+      run: |
+        if [[ ${{ github.event.ref }} =~ ^refs/tags/v[0-9]+[.][0-9]+[.][0-9]+(rc[0-9]+|[.]dev[0-9]+)?$ ]]; then
+          echo ::set-output name=release_tag::true
+        fi
+    - name: Publish to PyPI
+      if: steps.check-release-tag.outputs.release_tag == 'true'
+      run: |
+        pip install --upgrade setuptools wheel twine
+        python setup.py sdist bdist_wheel
+        export TWINE_USERNAME=__token__
+        export TWINE_PASSWORD=${{ secrets.PYPI_TOKEN }}
+        twine upload dist/*