Bukkit

There is now an option in the config to have mobs drop the proportionate loot if a whole stack falls to it's death.

Shorn sheep will now stack separately, still keeping colour in mind given separate-stacks-by-colour isn't false in the config.

There is now at option to set a max stack size for specific mob types.

Potential duplication glitch when mobs have the max stack size restricted - Being patched ASAP