event_bus

• Add constructor for custom controllers like RxDart Subject (see #21).
• Remove new keyword.

• Cleanup and update dependencies.

• Migrate to Dart 2.
• BREAKING CHANGE: The on method now has a generic type. The type must be passed as a type argument instead of a method parameter. Change myEventBus.on(MyEventType) to myEventBus.on<MyEventType>().
• BREAKING CHANGE: Every EventBus is now hierarchical so that listeners will also receive events of subtypes of the specified type. This is exactly the way that HierarchicalEventBus worked. So HierarchicalEventBus has been removed. Use the normal EventBus instead.

• Fix Issue #13: Improve on() stream when no type is specified

• BREAKING CHANGE: Moved the HierarchicalEventBus to a separate library to
  be able to remove dart:mirrors from the normal EventBus.
  Users of the hierarchical event bus must import event_bus_hierarchical.dart
  and replace the use of the factory constructor EventBus.hierarchical() with
  the HierarchicalEventBus constructor.

• BREAKING CHANGE: Changed and simplified the EventBus API. We can now dispatch
  any Dart object as an event. Before, we had to create an EventType for every
  type of event we wanted to fire. Now we can use any class as an event.
  Listeners can (optionally) filter events by that class.
• Added a way to create a hierarchical event bus that filters events by
  class and their subclasses. This currently only works with classes
  extending other classes and not with implementing an interface.
  We might have to wait for
  https://code.google.com/p/dart/issues/detail?id=20756 to enable interfaces.
• BREAKING CHANGE: Default to async mode instead of sync. This now matches the
  of the Dart streams.
• BREAKING CHANGE: Removed LoggingEventBus. Reason is that logging can easily
  be implemented with a event listener that listens for all events and logs
  them.

Update to dart libraries 0.9.0

• Fix issue #8: Add logging of events that flow through event bus

Change default of SimpleEventBus to sync (same as factory in EventBus)

• Fix issue #6: Fire should accept null as data

• Update to new Dart SDK v0.5.13.1_r23552.
• Using Darts new Stream.broadcast() factory.
• Provide option for synchronous broadcasting of events.
• Update unit tests and example.
• Create demo page.

• Removed all occurrences of @override

• Change in README: contained wrong license (Apache instead of MIT).
• Remove import 'package:meta/meta.dart' in event_bus.dart as it is not needed and may cause an error if used as pub package.

• Minor change in README to fix image links.

• Initial Version.