Add Entity.isOnGround(). Adds BUKKIT-3787
No @Override here in Java 1.5.
Make HopperMinecart implement InventoryHolder. Adds BUKKIT-3796
Add InventoryPickupItemEvent. Adds BUKKIT-3798
Add block or entity causes to BlockIgniteEvent. Addresses BUKKIT-3609, BUKKIT-3656, BUKKIT-3657
Add per-player Weather API. Adds BUKKIT-812