Fixed a bug where notifications could incorrectly appear for messages in the current thread
Fixed a bug where swiping left/right on images in the MediaDetailViewController could load images from other threads
Fixed a bug where the unread count wouldn't appear correctly when opening a conversation
Fixed a bug where the unread count on the conversation cell could get truncated
Fixed a bug where notifications weren't working correctly when the app is in the foreground
Fixed a bug where we weren't clearing the 'received X new messages' count when in the foreground
Fixed a bug where outgoing messages could get marked as read in a very specific case
Updated the "group notification" logic to only apply to Open Groups (and always doing it rather than just in the background)
Added a placeholder person icon when you have a closed group with a single member
Added a couple of indexes to improve the HomeVC database query performance (reduce launch time by ~15% in some cases)
Added a background task to give message sending the chance to complete when sending the app to the background
Removed an unneeded query from the HomeViewModel init (reduce launch time by ~10% in some cases)
Optimised one of the queries used to load the data needed for the conversation screen
Changed the min OS version to iOS 13.0 (support for 'Identifiable')
Removed the alternate approaches to fetching the userKeyPair and userPublicKeyHexString (no consistently routed through the caching method)
Migrated the 'OWSIdentityManager' logic to use the new 'Identity' type
Added the 'Setting' table and got the pattern working fairly nicely (unfortunately there isn't a good way to avoid key collision without proper enums)
Updated the SessionSnodeKit to migration it's data from YDB to GRDB
Updated the SessionSnodeKit to use GRDB throughout it's logic
