Update voxel-pumpkin, voxel-start, voxel-voila

deathcap/voxel-pumpkin@01972ad5e0050c31ec32d6d2bdb1d700c40b1f4f Add jack-o'-lanterns, and lighter. Closes GH-1
deathcap/voxel-start@4c3356db85e29763cf7d46b432145fd6c454234b Horizontal centering. Ref GH-2
deathcap/voxel-voila@f6a07738f441ff113765a7a44af87925803e8651 0.1.1
deathcap/voxel-voila@5c6ebce4fcd318c9abab96a198533b637de8abd2 Fix centering. Closes GH-3

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