Bug Fixes
- Bulk transfer students
([96](https://github.com/ocadotechnology/codeforlife-package-python/pull/96),
[`008eea4`](https://github.com/ocadotechnology/codeforlife-package-python/commit/008eea42a0832cc72662caf663aa5fafe9aa9eb2))
* fix: teacher field on class serializer
* fix: help
* fix: bulk update action generator
* fix: test bulk_update
* fix: support list and queryset during updates
* Merge branch 'main' into bulk_transfer_students