Update voxel-land to use asm.js simplex noise, and voxel-plugins/voxel-registry unit tests

deathcap/voxel-land@007104e2135e5602134a9401f624c1b9f92bdc39 Update simplex-noise.js
deathcap/voxel-plugins@b978aad4ceace902e6640f24ccf8dcc9b8b7b62f Update unit test exception to use tape throws()
deathcap/voxel-registry@90a76963a6d35e32fbc2b99d393b82e6030d374c Update unit tests to use tape throws()

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Update to ProgrammerArt v2.0

Includes complete item textures (as well as blocks)
Update tools to not take damage in creative mode: inventory-window, voxel-gamemode, voxel-harvest

deathcap/inventory-window@a3b93d127840b36a326fdd00eb11b02b3ce0e1e6 0.1.1
deathcap/inventory-window@f9e883c5bf3ba5e09cc52dd5b41a4c9e6e9e909d Fix mispositioned count when progress bar present. Closes GH-10
deathcap/voxel-gamemode@6d53f6fc335750429cfbb59a02cf7ebd16045887 0.1.1
deathcap/voxel-gamemode@fb95cdff4519ad30c77f67c626a5ea0a49bcdc0d Add voxel-harvest support: tools don't take damage in creative mode. Closes GH-1
deathcap/voxel-harvest@e5276d33ebb327ceb3d47f20a5d6da51e1413181 0.1.2
deathcap/voxel-harvest@8d773102690e3ccc868300314162e8e484ce6c6d Add enableToolDamage option, default true but if false, tools won't take damage

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Merge master
Regenerate bundle.js