Heart Crystals

-added cupid's arrow

-tweaked recipes

-added create mixing recipe for heart crystal shard

-added alt recipe for C&C living flesh using heart crystal shard

-heart crystals can now be placed (and can sometimes spawn) on the ceiling

-added compat for clayworks decorated pot trims

-heart lanterns use silver ingots in recipe if forge:ingots/silver tag is not empty

-bug fixes