Cross-Server Support - This is the main thing. Your teams now work across multiple servers if you're using BungeeCord or Velocity. Team chat, invites, kicks, online status all of it syncs up. Someone on server1 can invite a guy on server2, kick them later, chat in team chat, whatever. It just works now.
MySQL Database - Added MySQL support with connection pooling. If you run a network just point all your servers to the same database and it stays synced. Has auto-reconnect and keepalive so you won't get random disconnects at 3am.
Performance - All database stuff runs async now. No more lag when saving teams or loading data. Should feel a lot better on busy servers.
