Add tox-gh based CI

.github/workflows/ci.yml

@@ -0,0 +1,50 @@
+name: CI tests
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+
+concurrency:
+  # cancels running checks on new pushes
+  group: check-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+
+  pytest:
+    name: Run Python unit tests
+    # Note that 20.04 is currently required until galvani supports mdbtools>=1.0.
+    runs-on: ubuntu-20.04
+
+    strategy:
+      fail-fast: false
+      max-parallel: 4
+      matrix:
+        python-version: ['3.8', '3.9', '3.10', '3.11']
+
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Install MDBTools OS dependency
+        run: |
+          sudo apt install -y mdbtools
+
+      # tox-gh workflow following instructions at https://github.com/tox-dev/tox-gh
+      - name: Install tox
+        run: python -m pip install tox-gh
+
+      - name: Setup tests
+        run: |
+          tox -vv --notest
+
+      - name: Run all tests
+        run: |
+          tox --skip-pkg-install