Add type checking to tests

.github/workflows/python-tests.yml

@@ -1,35 +1,41 @@
 name: Python Tests
-
 on:
   pull_request:
     branches: [ master ]
 
 jobs:
-  test:
+  test-and-typecheck:
     runs-on: ubuntu-latest
     strategy:
       matrix:
         python-version: ['3.10', '3.11', '3.12']
 
     steps:
-    - uses: actions/checkout@v4
+      - uses: actions/checkout@v4
+
+      - name: Set up Miniconda
+        uses: conda-incubator/setup-miniconda@v3
+        with:
+          auto-update-conda: true
+          python-version: ${{ matrix.python-version }}
 
-    - name: Set up Miniconda
-      uses: conda-incubator/setup-miniconda@v3
-      with:
-        auto-update-conda: true
-        python-version: ${{ matrix.python-version }}
+      - name: Install dependencies
+        shell: bash -l {0}
+        run: |
+          conda create -n tracepyci python=${{ matrix.python-version }} --yes
+          conda activate tracepyci
+          conda install --yes numpy scipy matplotlib scikit-learn pandas pytest pytest-cov
+          pip install mypy types-PyYAML pandas-stubs
+          pip install .
 
-    - name: Install dependencies
-      shell: bash -l {0}
-      run: |
-        conda create -n tracepyci python=${{ matrix.python-version }} --yes
-        conda activate tracepyci
-        conda install --yes numpy scipy matplotlib scikit-learn pandas pytest pytest-cov
-        pip install .
+      - name: Run tests
+        shell: bash -l {0}
+        run: |
+          conda activate tracepyci
+          pytest tests/
 
-    - name: Run tests
-      shell: bash -l {0}
-      run: |
-        conda activate tracepyci
-        pytest tests/
+      - name: Run type checking
+        shell: bash -l {0}
+        run: |
+          conda activate tracepyci
+          mypy tracepy/ --ignore-missing-imports