Added Matrix4 fromTranslationQuaternionRotationScale and multiplyByScale
Fixed debug bounding spheres for model matrices with scale
Added FrameState.events
Fixed createArrayBufferview length
Fix exceptions
Improve pick example
Merge master to trs
Merge master to trs
Merge master to trs
Merge master to trs
Merge quaternion to trs
Fixed tests
Merge master to trs
Merge master to trs
Merge master to trs
Merge remote-tracking branch 'origin/master' into trs
Tweaks
Changes based on reivew
Merge pull request #1241 from AnalyticalGraphicsInc/trs

Subset of glTF animations