Rename examples to terrain
Add OAPQUE in terrain.js for clarity
Export only terrain
Lookup block indices for terrain generation; change to export a function called with materials instead of lazy property
Refactor opaque bit to use 'transparent' block registry property
Remove createVoxelMesh caching since it is now only called once
Change clear color to a light blue sky
Fix voxel-stitch version, ^0.2.0
Add a block with a high index (255) as a test
Increase block index from 8-bit to 15-bit (all but 1-bit opaque flag); update test

Update ao-mesher

deathcap/ao-mesher@b8aa6eb7e14603a1d6c888c763b90a77a070ddd7 Use all lower bits as voxel index, increasing max from 255 to 32767. Closes mikolalysenko/ao-mesher#2

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