Working on ray/voxel intersection testing.
Merge branch 'master' of https://github.com/highfidelity/hifi into metavoxels
Basic ray/voxel intersection testing up and running.
Update to SDL2
Update gamepad.js to use new Joysticks interface
Allow drawing cursor on dual contour surface, wired up material paint tool.
Merge branch 'master' of https://github.com/highfidelity/hifi into metavoxels
Comment fix.
Update max axis value to reflect maximum negative value
Bumped the metavoxel version number.
Fixed my swizzle!
Add joystickWithName for PrioVR
Merge pull request #3583 from ey6es/metavoxels

Added ray/dual contour intersection testing, cursors on dual contour surfaces, "material brush" for dual contour surfaces.
Merge pull request #3584 from huffman/sdl-update

Update to SDL2