Major notes:

• The ability to update users is here. Users can update their own information and admins can update every user's information.
• A mongo collection called tokens will be created that tracks users' tokens. Stay tuned for more abilities such as revoking and blocking tokens.

Minor notes:

• NOAUTH has been clarified to NOUSER when a user is not found.
• Changed NOAUTH_ERROR_POSSIBLE_SPOOF to a non-500 error code since there is no internal server error.