Fixed sheep forgetting they had wool and throwing NPEs.
Fixed wolves throwing NPEs under VERY rare circumstances.
Implemented workaround to caveat #2. Entites should keep their skin now when both a chunk loads and on join after a world is loaded :D (many thanks to Afforess for the idea on how to workaround this).
Creatures will not be skinned on world generation. This is a bukkit issue that I have submitted a ticket in hopes of seeing resolution.
