Got a number of the GroupUpdate messages working properly
Updated the DisplayPictureDownloadJob to support OpenGroup room images
Updated the Poller to process messages by namespace (sorted) and added support for synchronous handling of messages
Reworked the ProfileManager to be a more reusable DisplayPictureManager
Cleaned up the conversion from milliseconds to TimeInterval (which is documented as seconds) for clarity
Fixed a read/write crash due to the SnodeAPI cache setup
Fixed an issue where dependencies could incorrectly overwrite each other when based on protocols
Started refactored some logic to make it easier for unit testing
Started updating SnodeAPI calls with prepared requests
Fixed some issues with the PreparedRequest 'map' and 'handleEvents' functions
Genericised common pre-request behaviours for SnodeAPI calls
Added a work around for getting an SQLite Busy exception on startup (should only be caused by edge-cases, unsure what the impact of the workaround will be if the db is actually busy)
Updated the auth to work for updated groups
Cleaned up group creation to seemingly work properly (not syncing for some reason)