Expose configurable tilepad option for voxel-debug
Set opts.useFourTap and opts.tilepad defaults for voxel-debug
Revert "Change constructors to use (game,opts) convention"

This reverts commit b9e23e224070fd97f10607bcd53d033bb967a2e8.

Conflicts:
	index.js
Remove non-atlas implementation (TextureSimple)