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move IPKernelApp from zmq.ipkernel to zmq.kernelapp...
move IPKernelApp from zmq.ipkernel to zmq.kernelapp - merged IPKernelApp into KernelApp, they are no longer separate classes - embed_kernel moved to its own file - ipkernel now only contains the Kernel class - associated imports updated

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logtopics.rst
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zmq kernels now started via newapp
r3970 =======================
Log Topic Specification
=======================
we use pyzmq to broadcast log events over a PUB socket. Engines, Controllers, etc. can all
broadcast. SUB sockets can be used to view the logs, and ZMQ topics are used to help
select out what to follow.
the PUBHandler object that emits the logs can ascribe topics to log messages. The order is:
<root_topic>.<loglevel>.<subtopic>[.<etc>]
root_topic is specified as an attribute