updated package setup (#485)

* updated package setup

* updated to use python 3.9

* fixed test runner

* fixed typecheck tests

* fixed discrepencies

* added override to runner

* updated travis

* updated pre-commit hooks

* updated dep

.gitignore

@@ -1,15 +1,11 @@
 *.egg-info
-__pycache__/
-out/
-/test_sqlite.py
-/django
+.DS_Store
 .idea/
 .mypy_cache/
-build/
-dist/
-pip-wheel-metadata/
 .pytest_cache/
-/.envrc
-/.direnv
-django-sources/
-.venv/
+.venv/
+__pycache__/
+django-source/
+out/
+pip-wheel-metadata/
+stubgen/