Adjusted chiseling rules so that you can not chisel any block with with 2 raw stone blocks above it. I'm aware that this can be a pain for decoration but I put the usefulness of support beams above that. I will entertain other ideas for how to achieve the same effect however.
Added null checks to prevent clientside crucible crashing.
TFC Gravel should now drop flint the same way as vanilla
AnvilManager now clears recipes when the world is unloaded to prevent massive recipe list when making new worlds.