Changed the way premium players are stored, now can support auto name change (BUNGEE ONLY). If a premium player changes their username, it will set the same UUID as the their old username.
- Added config option to disable or enable ^
- Added hook for BungeeCord version for AuthMeBungee to prevent players from /premium before logging in.
- Added support for 1.18 for Bukkit version
- Premium players are now stored by their Online UUID. It will automatically rename all current existing premium players data file to their online uuid string.