THIS VERSION HAS WORLD-ALTERING CHANGES, PLEASE READ.

The biome registration changes unavoidably cause ATG biomes in existing worlds to be replaced with a vanilla fallback, probably plains. This won't break any worlds, but it does make things like tundra less pretty, which is sad :(

• Changed biome registration to use the method that I should have been using from the start, unfortunately this causes problems.
• Internal rearrangement to move the core noise class from the ChunkProvider to BiomeProvider. This should prove more robust in different modded environments. Should solve crashing with the EXU2 Deep Dark and only generating ocean on sponge servers.