v1.12.2 - Remove legacy biomegrid stuff, vastly improve interpolation, use OpenSimplex
This update removes support for the crappy legacy BiomeGrid system,
vastly improves inter-biome interpolation (3D), and updated to the newer FastNoiseLite library, switching Gaea to OpenSimplex2
Updating to this version breaks parity with old worlds! Don't update on an existing world!