Prepare for UUID update
Deprecate methods in ExperienceAPI
UUID Conversion stuff
Deprecate PlayerProfiles relying on names
Add hidden options for uuid conversion
UUID flatfile stuff
Save and load profiles using UUIDs
fall back on usernames if neccesary
Update playername in database when a name changes
Load UUID with SQL
Update to UUIDFetcher v3
Save if uuid conversion is complete
Add saving of UUIDs (used in the UUID Fetcher update task)
Add a new fallback method that does the exact same thing; add it when the retry on getting a UUID player would have failed twice
Check for uuids instead of usernames when loading a player
Optimize SQL side of UUID update
Add saveUserUUIDs to FlatfileDatabaseManager so mcMMO compiles

Minimal changes were made but it hasn't been tested at all and almost certainly doesn't work.
Also update flatfile with uuids
Fixed formatting!
Remove hidden interval option