- Loading Discord RPC is now handled by `load/rpc.lua`
- Removed `presence` global, call `DiscordRPC:update()` directly with what needs updating
- Game doesn't crash anymore if the Discord RPC fails to load
- Added RPC variables in the gamemode superclass to let each gamemode handle its special case
- Renamed st and sp to strTrueValues and frameTime respectively
- Modified files calling these to use the new names
- Tidying like formatTime now using a single string.format