Particular/NServiceBus — pull request #2473 by johnsimons (2014-10-15 02:39:20+00:00)
Title: Adding a new Rx BusNotifications API

The first cab of the rank is to expose error streams:
- MessageHasFailedAFirstLevelRetryAttempt
- MessageHasBeenSentToSecondLevelRetries
- MessageSentToErrorQueue