Log Message:
py-model_mommy: updated to 2.0.0

2.0.0
- Discontinue the lib and migrate to https://github.com/model-bakers/model_bakery
- Use default value for unknown field types
- Enable seq method to be imported directly from model_mommy
- Stick to Django's roadmap (https://www.djangoproject.com/download/)
- Add validation to `_fill_optional` parameter
- Add new `_from_manager` parameter to `make` method
- Clean up obsolete imports
- Save object instances when handling one to many relations