Global functions:

`mcl_biomes.register_grass_decoration(grasstype, offset, scale, biomes)`

`mcl_biomes.register_seagrass_decoration(grasstype, offset, scale, biomes)`

`mcl_biomes.register_doubletall_grass(offset, scale, biomes)`

`mcl_biomes.register_double_fern(offset, scale, biomes)`

`mcl_biomes.register_large_flower(name, biomes, seed, offset, flower_forest_offset)`

`mcl_biomes.register_flower(name, biomes, seed, is_in_flower_forest)`
