Adds test showing an issue when changing nowshowing during a transition
Fixes the private liveAdjustments property of SC.View so that it returns left/top values for live transform adjustments that are less than or equal zero.
Improves the SC.ContainerView transition plugin support. Plugins can now provide reversable support for when the same view changes from entering to exiting or vice versa. Also fixes a problem with the REVEAL transition resetting content after removal and adds SC.ContainerContentStatechart debugging support via SC.LOG_CONTAINER_CONTENT_STATES.