Also adds per-world spawn limit config in paper.yml for `underground_water_creature`, and migrates existing spawn limit config options to their Mojang names.
Upstream has released updates that appear to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing
Bukkit Changes:
44cfe143 SPIGOT-6249: Add Missing Effect Constants
CraftBukkit Changes:
14928261 SPIGOT-6249: Add Missing Effect Constants
332335e1 SPIGOT-6731: "Nag author" message in CraftServer lists one author only
6cd975d0 SPIGOT-5732, SPIGOT-6387: Overhaul Hanging entities
