Add API to control scaled health. Adds BUKKIT-4590
Spigot
EMC POM Changes
Water flow not trigger chunk loads

Make BlockFromToEvent default cancel if the flow would trigger a chunk load.
PlayerDeathEvent.getItemsToKeep

Exposes a mutable array on items a player should keep on death
Add a call helper to Event
Precise timings
Fix reset timings
EntityShootBowEvent consumeArrow API
ItemStack isSimiliar ability to skip durability check
Expose commandmap
Inventory Meta API
Check permissions on commands before executing them
Entity Serialization

add method to spawn an entity at a location if its not in any world (invalid)
Remove Invalidated Metadata

On reload, metadata will be cleared
Implemented LeadKnot. Adds BUKKIT-4570