* Update recorder.
models.py:
- Use scoped_session in models.py to fix shutdown error
__init__.py:
- Session _commit & retry method
- Single session var for purge_data
- Ensure single _INSTANCE
- repeat purge every 2 days
- show correct time in log_error
* _commit
* Restore models to old functionality, swap purge, remove _INSTANCE cleanup from tests, typing ignore Base class
* pylint
* Remove recorder from model unit test
Johann Kellerman
Paulus Schoutsen