akkadotnet/akka.net — pull request #374 by rogeralsing (2014-09-05 14:52:55+00:00)
Title: Refactoring Mailbox support.

Some groundwork for better mailbox support:

* Added `RequiresMessageQueue`
* Added Mailboxes Config support (mailbox requirement bindings)
* Added Double Ended Mailbox Support
* EndpointWriter has `RequiresMessageQueue` requirements applied
The Akka impl does not have this, but our default concurrent queue mailbox is not double ended..

**Breaking Change**
* Changes to Stashing support, stashing requires double ended message queue semantics