ChunkManager

New

• Diagnostics menu - see live TPS, memory, and your laggiest chunks and regions at a glance.
• Predictive Loading menu - turn teleport and portal preloading on/off and change the radius, right in the GUI.

Fixes

• Fixed the chunk teleport menu messing with other menus - clicking around after a teleport no longer warps you.
• Fixed a slow memory leak from portal preloading.
• Feature toggles now take effect right away instead of needing a restart.