made 'AssetManager.getName()' protected to allow custom asset naming
added 'premultipliedAlpha' property to Quad class
Merge branch 'master' of github.com:PrimaryFeather/Starling-Framework
fixed handling of monospace fonts (closes #289, refs #189)
fixed special case when movieclip was advanced from a point within the last frame exactly to its end (closes #275)
updated AIR configs for 3.6
now avoiding automatic context recreation on Starling.dispose (refs #195)
optimized transformation matrix generation
added 'Juggler.containsTweens'