fix for DataWebPage hifi link handling
Tweaks to heightfield conversion.
Merge branch 'master' of https://github.com/highfidelity/hifi into metavoxels
Audio-only mouth uses multiple blend shapes
Merge branch 'master' of https://github.com/highfidelity/hifi into metavoxels
clarify fake blendshape array size
Added options to selectively toggle heightfield/dual contour surface
rendering.
Fix for clearing empty nodes.
Fix player loop
More gradual improvements to heightfield voxelization.
Merge branch 'master' of https://github.com/highfidelity/hifi into metavoxels
Merge pull request #3642 from samcake/temp0

Bring back the GL batching for model rendering and fixed the bug on MAC
Merge pull request #3657 from ey6es/metavoxels

Further incremental improvements to heightfield voxelization.
Merge pull request #3644 from birarda/data-web-page

fix for DataWeb hifi link handling
Merge pull request #3651 from PhilipRosedale/master

Better animation for audio-only mouth movement
Merge pull request #3655 from Atlante45/fix_playback_loop

Fix player loop