fixed timing issues when calling 'purgeQueue' and 'loadQueue' in succession (closes #429)
added information about filter disposing (closes #432)
fixed MovieClip docs, contained outdated event info
fixed that ADDED_TO_STAGE event was not dispatched in some situations (closes #437, refs #426)
not calling 'advanceTime' any longer when context is lost (closes #430)

Previously, I only avoided 'render' calls; however, there's also normal user-code that will fail while the context is invalid (e.g. creating a texture). So I shouldn't call any user-code before the context is restored.
now making sure that the correct Starling instance is used when creating assets (closes #433)
now pinning down the starling instance only on 'loadQueue'; added more documentation (refs #433)
fixed wrong method name in API docs
Merge branch 'master' of https://github.com/PrimaryFeather/Starling-Framework

Conflicts:
	starling/src/starling/display/DisplayObject.as