v6.11-SNAPSHOT-2 didn't end up being the brightest update out there so here's an update that fixes (hopefully) everything I broke.

[ + ] Added the Chinese language - thank you @VICBIECK for this!

[ + ] Made some internal changes to how player statistics are calculated inside the plugin - they should be more resource-friendly and faster.

[ + ] Fixed some errors with MySQL.

[ + ] Player head drops are back, whoops

[ + ] Levels now update properly when skipping some levels.

[ + ] Levels use rewards like challenges do, meaning that you can use multiple commands in a level reward again.

[ + ] Fixed the piglin brute head not loading.

[ + ] Head drops grant XP again.

[ + ] Fixed head crafting not working when WorldGuard is not installed or disabled.

This is still a snapshot but should be more stable than the last update, please do let me know if you run into any issues with it. Thanks!