Load voxel-engine as the master plugin

Requires deathcap/voxel-plugins@d2638e57c2afe1cb2645ccf2ac7103da6e0f32a6
Add voxel-sky for lighting
Load voxel-sky as a plugin

Requires deathcap/voxel-sky@94b6a8793486954b3cc33ade1ef33af5eefac5b9
Revert "Add voxel-sky for lighting"

Couldn't start it in daylight, always night. Requires
further changes before adding.. (see experiments on branch)

This reverts commit b692cc33b8aa2c2b9477e96f1c8708d1968f46b9.

Conflicts:
	index.coffee
	package.json
Move custom lighting to voxel-daylight
Move logo toggling to voxel-oculus; remove rift hash

Requires deathcap/voxel-oculus@ac4782759739f348cc553d959cf92c9bfdef0230
Minor cleanup
Move avatar possess to voxel-player

Requires deathcap/voxel-player@5cadc5d8fa640073527e7c1ede3831daa8b2eb65
Move home() to voxel-player

Requires deathcap/voxel-player@95ed1faed3ba3c44b7e8d4b49dbceb1248a343b1
Remove unused require()s
Move notCapable() check into voxel-plugins loader for voxel-engine

Requires deathcap/voxel-engine@ade4cbcf3a076da80648ca0f7e4680b0fbd134fb
Remove inventory texture global hacks

InventoryWindow instances now passed voxel-registry in constructor

Requires:
deathcap/inventory-window@b33956b6548f43976b32f07717f3198d4cb7f8e4
deathcap/voxel-inventory-dialog@5fd5517a563af9491866e89b080df7c5cf424fe3
deathcap/voxel-workbench@fb58bbfda243d26b17638409f2a09c139d1d3a2d
deathcap/voxel-inventory-hotbar@bbb72ae76cab3156787404009084b6d316cb82ba
deathcap/voxel-chest@34625b5547dd276a8f2042152bc0d6c431f4f218
Fix inventory hotkey typo