Spigot patch 0040: Entity Tracking Intervals

Send boats at the same speed as their player to remove the illusion of lag / jerkiness.

https://github.com/EcoCityCraft/Spigot/blob/d9c76252eb02f7d0d6bea11efe77e3bb1edb0d99/CraftBukkit-Patches/0040-Entity-Tracking-Intervals.patch