Stone Generation 1.17

Hey, after looking at the snapshots, I was of the opinion that stone, andesite and (maybe) diorite, should generate below Y=0 in smaller vein. Deepslate looks really cool, and so does Tuff, but I think there needs to be more variation in the overall texture of caves because it looks a bit noisy right now with all of the deepslate textures. Either that or the texture of deepslate needs to be toned down a bit.
You guys are doing great work, by the way!