Regenerate Chunks

This mod adds chunk regeneration using the /regen <radius> command. Regeneration starts on the chunk the player is standing in, so running /regen 0 will regenerate only the chunk the player is currently in.

KNOWN BUGS: Structures are not regenerated
When regenerating a chunk with trees multiple times, leaves will not be removed. This is intentional to prevent half-trees when regenerating adjacent chunks.
Removing the mod can very rarely cause crazy terrain bugs like chunks made of stone and removed chunks.

This mod is not perfect, but it is good enough for most use cases.

WARNING:Anything lower then 1.21.11 has not been fully tested so some things may be broken