Minor cleanup
AnimationCollection callback renames
Renamed model animation startOffset to delay
Doc fix
Change animation delay to seconds
Changed duration from milliseconds to seconds
Update SceneModePickerViewModel test
Improved performance monitor doc
Merge remote-tracking branch 'origin/master' into animation-collection2
Update FrameRateMonitor to use seconds instead of milliseconds
Merge master to animaiton-collection2
Added EasingFunction so end users do not need to reach into third-party Tween.js
Implement addAlpha using add
Implement addProperty using add
Implement offset animation using add
Merge master to animation-collection2
Clean up animation collection internal array
Fix geocoder flight
Add cancelAnimation
Merge master to animation-collection2