Only typecheck main package for now

Author: WardBrian

.github/workflows/main.yml

@@ -33,7 +33,7 @@ jobs:
         run: |
           pip install mypy black
           black --check .
-          mypy --strict .
+          mypy --strict bayes_kit/ # TODO make "." to also typecheck tests.
 
       - name: Run tests
         run: |