First beta release (2021/6/16)

Changes since 0.2.0rc2

1. Development status changed from alpha to beta!
2. Added a helper method for deleting local and remote media
3. Refactored some code
4. Made kwargs in User.create() keyword-only arguments
5. More and better documentation
6. Returning next_token in User.lists
7. Support argument "dir" in User.lists
8. Returning the admin status of the user after invoking User.set_admin
9. User.validity will now return expiration_ts instead of a dict with only one key

Bug fixed

1. server_name in Media.quarantine_remove should be optional