Update voxel-debug, voxel-engine, voxel-texture-shader: toggle texture engine modules

deathcap/voxel-debug@0a8a3f18d516a9c7970fbd62741a8ea1fe836147 Add switching between voxel-texture-shader and voxel-texture modules
deathcap/voxel-debug@261ae653ee8f995874a39814438b0a371ec89c16 Initialize texture options to defaults
deathcap/voxel-debug@f2688f37fce1d032a82f919837263ff95a10f99a Add tilepad configuring option for voxel-texture
deathcap/voxel-engine@98e25e30fb018fcf5d70c550ca22e160a5bf1b47 Add support for multiple texture modules
deathcap/voxel-engine@37bacfb9e24094a2a30617aa21300176308ef800 Restore support for voxel-texture 0.5.6
deathcap/voxel-engine@a8ef28f7c2645dc106737bbae556e816d2409fbe Increase atlas size to 2048x2048 from 512x512
deathcap/voxel-texture-shader@ba67ab959bdddda56109d7a3c3318f90f45ab3a9 Update readme for voxel-texture-shader
deathcap/voxel-texture-shader@819f7d5ac289d555f70cd7d796824ff639cfc94a Remove demo for now
deathcap/voxel-texture-shader@02b630635037aa80be6f4fb2f111a631505c9544 Rename module to voxel-texture-shader
deathcap/voxel-texture-shader@371ddaf2a19aee1580ed02ef2d27bf96cc30aa12 Remove non-atlas implementation (TextureSimple)
deathcap/voxel-texture-shader@aa9eac015c602253cbdaac4e7f7760f781c37bc4 Revert "Change constructors to use (game,opts) convention"
deathcap/voxel-texture-shader@588cd31fc814d63dd2c6b1dbd68c651e9fb0fba3 Set opts.useFourTap and opts.tilepad defaults for voxel-debug
deathcap/voxel-texture-shader@2b8394e39ff24da33147cbc8edee97ab1b1e0445 Expose configurable tilepad option for voxel-debug
deathcap/voxel-texture-shader@7c7d141d0b7c74cf5ac4fb2452932322aee1f5e7 Always enable tilepad, even with 2x2 repeat. Improves automatic mipmaps
deathcap/voxel-texture-shader@d0c05007c4097e35b0f52b60abe4fe999d4221d6 Fix disabling useFourTap option

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