Better least recently used cache for chunk data

Updated Packages

Updated ProjectSettings

Further improved generation, now there are almost no hitches, the remaining hitches seem to be due to texutres taking too much memory. Need better least recently used implementation.

Better biomes calculation, now only max 500 chunks are rendered

Removed ships flying

Readme images are in this git repository

Fixed issue where showing many meshes at once would cause stall on game thread due to so many meshes taking soo long to upload on render thread

Fixed shader compilation in Unity 2020

Normal maps are now properly generated in tangent space

Reusing world normal map alpha for slope instead of using another texture for slope

Nicer diffuse map generation, now multiple triplanar maps are composite over each other to add more color variation

Chunk vertices normals are now calculated in compute shader

Cleaned up unused shaders

Cleaned up ship control code