Changed
- Representation of user used in access control ([32](https://github.com/wtsi-hgi/python-baton-wrapper/issues/32)).
- Use of hgijson and hgicommon from PyPI.
- Type of exception raised when baton encounters an unknown exception ([34](https://github.com/wtsi-hgi/python-baton-wrapper/issues/34)).
Added
- Ability to recursively change access controls.
- Setup for PyPI.
Removed
- Redundant helper scripts.
- `get_all` method from `DataObjectReplicaCollection`.