update HoverController. Allow _steps to be 0 so panAngle and tiltAngle can resolve to their targets immediately.
Merge pull request #467 from johnbrandle/master

update to allow tiltAngle & panAngle to resolve after first call to update in HoverController
Extend LookAtController to allow 'upAxis' to be defined.

LookAtController (and by implication HoverController) assumes that up is in the +Y direction. The purpose of this pull request is to allow the up direction to be set by the user of these classes.
Merge pull request #576 from ChrisDenham/patch-1

Extend LookAtController to allow 'upAxis' to be defined.
Merge branch 'dev'

Conflicts:
	src/away3d/controllers/HoverController.as
	src/away3d/controllers/LookAtController.as
replace missing bracket in lookat controller
fix for runtime error when using getSceneCollision on view
updated changelog and bumped revision number to 4.1.4
add new particle node: ParticleSegmentedScale