zeromq/pyzmq — pull request #371 by minrk (2013-05-12 16:57:08+00:00)
Title: move cores to zmq.backend.[implementation]

Makes a bit more sense this way.

Version is bumped to 14.0.dev, because of the reorg. Zero public APIs are touched, but any remaining bad code that imported directly from `zmq.core` is now totally broken.