fixed flash to black at the end of the reverse animation
another fix for ghost. By the way the animations should set their end value on the view or we may have glitches (not seen if views are not transparent)
sotre orientation
store duration
no need this will be done anyway
otimisz
comment
we need to store the current transition to prevent message sent to deallocated instance when the transition finishes (and if the navigation controller has been deallocated)
for ios7
doing things in the correct order(so that frame is set in viewWilllAppear)
lastTransition access
more delegate methods
better order
more rotation methods support
better handle of animations so that we dont get flicking effects
better swipefade
better modern push
better zoom
call the start
new transition (to simulate nav bar back button effect)