Make CI use pyproject

Author: Debilski

.github/workflows/run-tests.yml

@@ -17,9 +17,11 @@ jobs:
       uses: actions/setup-python@v2
       with:
         python-version: ${{ matrix.python-version }}
-    - name: Install dependencies
-      run:
-        python -m pip install pytest numpy
+    - name: Install package and test dependencies
+      run: |
+        python -m pip install --upgrade pip
+        python -m pip install --group dev .
+        python -m pip install .
     - name: Test with pytest
       run:
         pytest -v