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Merge pull request #1301 from nathan-rice/master...
Merge pull request #1301 from nathan-rice/master Require pyreadline 1.7.1 on Windows, which fixes a number of small problems for which we had workarounds. Closes #1202.

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logtopics.rst
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MinRK
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