TST: switch CI to Python 3.11, and other test housekeeping tasks

.github/workflows/ci.yml

@@ -12,15 +12,14 @@ jobs:
   tests:
     strategy:
       matrix:
-        os: [
-          ubuntu-latest,
-          macos-latest,
-          windows-latest,
-        ]
-        python-version: [
-          '3.8',
-          '3.10',
-        ]
+        os:
+          - ubuntu-latest
+          - macos-latest
+          - windows-latest
+        python-version:
+          - '3.8'
+          - '3.11'
+
     runs-on: ${{ matrix.os }}
     timeout-minutes: 30
 
@@ -34,7 +33,36 @@ jobs:
     - name: Setup package
       run: |
         python -m pip install --upgrade pip
-        python -m pip install .[dev]
+        python -m pip install ".[dev]"
     - name: Run tests
       run: |
-        pytest
+        pytest --color=yes
+
+
+  type-check:
+    runs-on: ubuntu-latest
+    name: type check
+
+    concurrency:
+      group: ${{ github.ref }}-dev
+      cancel-in-progress: true
+
+    steps:
+    - uses: actions/checkout@v3
+      with:
+        fetch-depth: 0
+
+    - name: Set up Python
+      uses: actions/setup-python@v4
+      with:
+        # Match minimal supported Python version
+        # to make sure we're not using unparseable syntax
+        python-version: '3.8'
+
+    - name: Build
+      run: |
+        python3 -m pip install --upgrade pip
+        python3 -m pip install .[typecheck]
+
+    - name: Run mypy
+      run: mypy amical