akka/akka — pull request #16034 by patriknw (2014-10-03 15:29:34+00:00)
Title: !str #15950 Add runWith and remove toX 

This should cover most things and is ready for review, but I will check if I have covered everything on monday (and add some docs).

* runWith(drainWithKey) and runWith(tapWithKey) returning the
materialized drain/tap
* remove toPublisher, toSubscriber, and friends, in favor of using
runWith
* MaterializedMap is the return type for both flow and graph