Yung's Better Caves smooth bedrock fix for the Nether floor and roof.

[GrandeMalum]

Hello. I'm having a very rough time getting bedrock to generate smoothly in the Nether while running Yung's Better Caves mod. When I turn flat bedrock feature on in the mod's configs the Nether floor becomes populated with stone blocks for unknown reason. The Nether roof on the other hand seems to be fully ignored by smoothing. I'd ask Yung for a fix, but unfortunately they've stopped supporting 1.12.2 a very long time ago.

P.S: The bedrock flattening feature works in the nether only if the nether is added in to "Whitelisted Dimension IDs" list.

[ACGaming]

Native flat bedrock functionality implemented in 7c59645