MediaPlayer iOS 11.4 to 12.0 API Differences

MediaPlayerDefines.h
Added #def MP_HAS_UIVIEW
Added #def MP_HAS_AVMEDIASELECTION
MPPlayableContentDelegate.h
Modified -[MPPlayableContentDelegate playableContentManager:initializePlaybackQueueWithContentItems:completionHandler:]
AvailabilityDeprecation Message
FromAvailablenone
ToDeprecatedUse Intents framework for initiating playback queues.