Removed the old OWSProfileManager and OWSUserProfile (refactored)
Removed all the old TSInteraction/etc. types (replaced with new database types)
Removed the old Quote models (refactored)
Removed the old Attachment models (refactored)
Removed the old recipient identity (unused)
Deleted a number of other unused files
Renamed the 'Legacy' classes to have their library prefix (avoid confusion)
Removed the legacy Objective C Thread code (pulled only the NSCoding stuff into the 'SMKLegacy' type)
Updated the config message generation for GRDB
Migrated more preferences into GRDB
Added paging to the MediaTileViewController and sorted out the various animations/transitions
Fixed an issue where the 'recipientState' for the 'baseQuery' on the ConversationCell.ViewModel wasn't grouping correctly
Fixed an issue where the MediaZoomAnimationController could fail if the contextual info wasn't available
Fixed an issue where the MediaZoomAnimationController bounce looked odd when returning to the detail screen from the tile screen
Fixed an issue where the MediaZoomAnimationController didn't work for videos
Fixed a bug where the YDB to GRDB migration wasn't properly handling video files
Fixed a number of minor UI bugs with the GalleryRailView
Deleted a bunch of legacy code
Refactored the SignalApp class to Swift
Fixed a horizontal alignment issue in the ConversationTitleView
Fixed an issue where expiration timer update messages weren't migrated or rendering correctly
Fixed an issue where expiring messages weren't migrated correctly
Fixed an issue where closed groups which had been left were causing migration failures (due to data incorrectly being assumed to be required)
Shifted the Legacy Attachment types into the 'SMKLegacy' namespace
Moved all of the NSCoding logic for the TSMessage
Refactored the AppDelegate from Objective C to Swift
Updated the HomeVC to use GRDB
Refactored a number of the Job types to be driven via GRDB and the new JobRunner
Fixed a bug where the LinkPreviewView wouldn't render correctly in dark mode