No Generation -Y

No Generation -Y

Removes generation below Y=0 in overworld

Applications

- Don't like generation -Y or want to diversify the game - Lags due to generation below Y=0

Changes

- Removes the generation of -Y in overworld - The deepslate level starts at Y=32 - Trial chambers and Trial chambers appear at approximately Y=0

Pay attention

- The air of caves and liquids of lakes at Y=0 will NOT be replaced by bedrock - Structures from experimental functions are not supported - Trial chambers (1.20.4-1.20.6)