Added some methods to Methods.java, may have accidentally reactivated LavaSurge.

About LavaSurge, I may have reactivated it. By looking below, you'll see the deprecation annotation was removed (not my doing), so you may need to deactivate it again (I don't know how to do it myself.)

I added 4 methods to spawn falling block entities, as only fluids (Lava and Water) are broken. This means that developers such as myself still have use for FallingBlock entities, and these methods makes things simpler.