Updated to the latest version of GRDB
Renamed some variables for clarity
Updated the "seed viewed" banner on the HomeVC to be driven by a database setting to be consistent with other UI changes
Removed some more legacy code
Added back logic similar to the pre-processing de-duping logic (was resulting in "unsent" messages reappearing)
Added a number of updated view files
Added migrations for contacts and started working through thread migration (have contact and closed group threads migrating)
Deprecated usage of ECKeyPair in the migrations (want to be able to remove Curve25519Kit in the future)
Fixed an issue where the "block" button would appear in the NoteToSelf swipe menu
Removed the OWSBlockingManager and supporting files
Removed a number of unused classes and methods
Refactored the BlockListUIUtils to Swift