Added Stability layer to the world manager. This determines the seismic stability of the zone which in turn determines Volcanic activity such as fissures and magma chambers. More work on this is coming.
Initial worldgen sped up significantly. The world was generating chunks near 0,0 before it generated them at our actual spawnpoint. Now it properly only generates near the tfc spawn.
tons of lava and hot springs stuff, fixed caves, adjusted ravines and underground rivers.
Merge pull request #425 from Kittychanley/Build78Fixed

Bug Fixes
Tweaked Terrastone to Cobblestone Recipes