Fexcraft Common Library

• added Server Hosted Files feature
• added config setting to disable url textures
• added new general purpose nbt packet, replaces the old one on 1.12
• removed obsolete packets and other code on 1.12
• implemented mixins like on 1.21 in the 1.20 version

BREAKS COMPAT WITH MOST DEPENDENT MODS Update them too if an update to them is available.

• fixed crash that happened upon searching something in creative tab in multiplayer (and having fvtm installed)

• FCL.SERVER optional is no longer null by default

• added general purpose tag packets

• added 2 methods to simplify block/item registry

• minor changes

• UI/FSMM-Shop related additions

• updated to 1.21.5

• backend and UI improvements

• fixed UI crash when using LD
• added checks for 1.21