Features
- Update teacher ([78](https://github.com/ocadotechnology/codeforlife-package-python/pull/78),
[`af01c73`](https://github.com/ocadotechnology/codeforlife-package-python/commit/af01c733122ccc3985191a5d7f19d7aac31062c7))
* feat: is_self permission
* fix: permissions
* fix: model managers
* fix: custom api request factory
* fix queries
* fix: type hints
* fix: set parent serializer
* fix: admin school teacher proxy models
* fix: double space