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• Added a BiomeGenerator parameter to BaseTerrainGenerator.getHeight. The old method is still supported, but deprecated.
• Fixed a NullPointerException when setting a biome generator when no custom chunk generator was set.
• Fixed the vanilla terrain generator ignoring your custom biome generators.

Note on the future: the Minecraft 1.16 update is right around the corner. In case you haven't noticed, that update adds a lot of configuration files for world generation. This will allow you to finetine all vanilla resources, which wasn't possible before. WorldGeneratorApi will of course be updated to 1.16, so that you can still create custom resources, biome layouts and terrain shapes.