Update CI for new project format

Author: sjagoe

.github/workflows/test.yml

@@ -28,9 +28,7 @@ jobs:
         python-version: ${{ matrix.python-version }}
     - name: Install
       run: |
-        pip install -e .
-        pip install -r "test_requirements.txt"
-        pip --version
+        pip install -e '.[test]'
     - name: Run tests with unittest
       run: |
         coverage run --branch -m unittest discover -v -t . haas