Update CircleCI config

.circleci/config.yml

@@ -34,7 +34,7 @@ jobs:
           # This assumes pytest is installed via the install-package step above
           command: |
             # we don't need any other dependencies
-            python3 -m pip install matplotlib scipy numpy sympy pytest pytest-mpl git+https://github.com/jcgoran/cosmicfish@feature/pip-install
+            python3 -m pip install .[test]
             python3 -m pytest -k 'not interfaces and not __init__.py'
 
 # Invoke jobs via workflows