Fixed Entity extended properties init order. Closes #1532
Fixed Entities not being able to climb ladders, Closes #1535
Fixed snow layers not being able to stack more then twice. Closes #1534
Fix BlockPane's connection detection.
Added model bake event (allows mods to insert custom baked models, much like TextureStitchEvent allows to load custom textures), ISmartBlock/ItemModel (ability form models to react to block/item states), Block.getDynamicState (state that shouldn't be enumerated over), support for dynamic states. Includes example implementation of http://imgur.com/a/FyyJX