v0.47.2894

• New: To be more explicit, IEventFlowOpions.AddSynchronousSubscriber<,,,> and
  IEventFlowOpions.AddAsynchronousSubscriber<,,,> generic methods
• Fix: IEventFlowOpions.AddSubscriber, IEventFlowOpions.AddSubscribers and
  IEventFlowOpions.AddDefaults now correctly registers implementations of
  ISubscribeAsynchronousTo<,,>
• Obsolete: IEventFlowOpions.AddSubscriber is marked obsolete in favor of its
  explicite counterparts