Update voxel-texture - add greedy mesher + atlas texturing support

deathcap/voxel-texture@a58b2878b23ad6d42d166cacb0f3a64f56bae073 Add custom ShaderMaterial supporting greedy meshing + atlas texturing
deathcap/voxel-texture@dad8347d8ec0c214dbc5087cedddf64847861c9b Remove material option configurability

Commit message generated by https://github.com/deathcap/lmno-cl
Update voxel-texture - adds 4-tap sampling

deathcap/voxel-texture@094612492644750d7267619dbcf616f82439aa05 Add 4-tap sampling to fix artifacts near texture boundaries
deathcap/voxel-texture@83bc8010722773880ed9b6fe0807eb4fe2c48607 Discard transparent pixels in fragment shader

Commit message generated by https://github.com/deathcap/lmno-cl