5.2.0

• feat: improved Carthage support
• feat: add Event.getListeners method
• deprecated: the Event.listenerCount property
• fix: call listeners in the order they started listening
• fix: Event<Void>.emit can be called without an argument again

5.1.0

• The NotificationListener class now takes a Notification instead of an NSDictionary.
• A NotificationListener without a target will now receive every Notification with its name, regardless of the value of notif.object.