Working on Visage improvements.
Merge branch 'master' of https://github.com/highfidelity/hifi
Compile fixes.
Experimenting with more action unit mappings.
Merge branch 'master' of https://github.com/highfidelity/hifi
Parse error fix.
Slight mapping improvement.
Don't render the hover text in mirror/billboard mode.  Closes #2098.
Use hysteresis to prevent rapid enabling and disabling of billboard.  Closes
Force a minimum convergence distance on the eyes.  Closes #2100.
Merge pull request #2102 from ey6es/master

More flexible Visage blendshape mapping, hysteresis for billboard switching, no hover text on billboards, eye convergence fix.