Bukkit/CraftBukkit — pull request #1071 by Xephi (2013-03-20 00:29:05+00:00)
Title: [B+C] Implement Dropper interface for diff visibility. Adds BUKKIT-3750

Add new TileEntityDropper file from mc-dev for diff visibility.
Add new BlockDropper file from mc-dev for diff visibility.
Add new CraftDropper file for bukkit implement.

You can now cast a block from BlockDispenseEvent to a Dropper and get CraftBlockState with the Bukkit API

Bukkit:
Leaky: https://bukkit.atlassian.net/browse/BUKKIT-3750