Stationary lava is also a LAVA ignition cause.
Add BlockDropper for diff visibility
Implement Dropper interface. Adds BUKKIT-3750
Delay firing EntityInteractEvent on Arrows hitting Wooden buttons until after collision detection.  Fixes BUKKIT-3686
add a method parameter instead of using a private field
Merge pull request #6 from andrepl/buttoninteract

Buttoninteract