Pass through artPacks option to texturer and Update voxel-texture

deathcap/voxel-texture@32d3847a4ed6eafa4200778ff08aa23d053a2515 Change to load textures using 'artpacks' module
deathcap/voxel-texture@57998e0723b63e87cd50c456dbb07716a50cf049 Remove optional require('three')
deathcap/voxel-texture@6a90b85eb31b825b0c784e5e8d4944aa66705f6e Add three.js shader chunks, fixes missing lighting
deathcap/voxel-texture@3f1b5d5dbdb16b1f2297659e2809fc9fabbc7c70 Cleanup tileSizeUV / tileSize unused code

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