QLKCue: setProperty:forKey:doUpdateOSC: now posts to NotificationCenter
reformatted cue update notification strings
added cueWithNumber: to QLKWorkspace, QLKCue
revised QLKCue setProperty's notification posting in order to avoid listenerkey strings
protected against void initializations in QLKCue notification system
Added external propertyKeys to QLKCue
QLKCue : publicized workspaceName method
QLKCue : added start/stop/reset/load/pause operations to cue itself.
QLKWorkspace : cue:updateChannel:level: is no longer marked as deprecated