MinecraftForge/MinecraftForge — pull request #437 by izstas (2013-03-06 17:08:10+00:00)
Title: Block.canWitherDestroy (similar to Block.canDragonDestroy)

Pretty straightforward and should be useful, for example, in [this case](http://www.minecraftforum.net/topic/1585216-thaumcraft-303-updated-122013/page__st__7800#entry20748382).