Upstream has released updates that appear to apply compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing.
Bukkit Changes:
d2834556 SPIGOT-4219: Event for PigZombies angering.
CraftBukkit Changes:
a9c796f1 SPIGOT-4184: Fix furnaces not matching Vanilla smelt or animations
195f071e SPIGOT-4219: Event for PigZombies angering.
5e3082c7 SPIGOT-4230: Improve legacy block types
This enables us a fast reference to the entities current chunk instead
of having to look it up by hashmap lookups.
We also store counts by type to further enable other performance optimizations in later patches.
I misread the code and thought the code kept looping until the mob spawn cap was hit.
Upon furthur review, this is not true, so this patch doesn't do anything sane.
Automated
Shane Freeder
Aikar
Zach Brown