layers use visibility rather than add/remove Child when switching displays; cache numFrames; remove clamp method
only _currentDisplay has name == layer name
Movie calls advanceTime on Layers, which only call advanceTime on currentDisplay
we can use a for-each iteration here
DisplayObject names are null by default
formatting & whitespace
remove frameOverShootDisplay sprite
fix getBounds for Movies to not include placeholder Sprites used in Layers where no symbol exists on a frame
formatting/coding standard corrections
Merge pull request #103 from kpatelPro/runtime-optimizations-1

fixes to layers managing symbols via visibility