Colouredlogs

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- Remove ``ColouredStreamHandler`` and related functionality, thereby breaking backwards compatibility.
- Remove Vim syntax script (impossible given user defined log formats :-).
- Improve test coverage.

.. _Release 5.0: https://github.com/xolox/python-coloredlogs/compare/4.0...5.0

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Enable reconfiguration (also: get rid of global root handler).

.. _Release 4.0: https://github.com/xolox/python-coloredlogs/compare/3.5...4.0

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- Bug fix: Never install duplicate syslog handlers.
- Added ``walk_propagation_tree()`` function (not useful in isolation :-).
- Added ``find_handler()`` function (still not very useful in isolation).

.. _Release 3.5: https://github.com/xolox/python-coloredlogs/compare/3.4...3.5

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Make it very easy to enable system logging.

.. _Release 3.4: https://github.com/xolox/python-coloredlogs/compare/3.3...3.4

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Easy to use UNIX system logging?! I know this is unrelated to the name of this
project - refer to the added documentation for more on that :-).

.. _Release 3.3: https://github.com/xolox/python-coloredlogs/compare/3.2...3.3

---------------------------

- Enable ``%(programname)s`` based on ``sys.argv[0]``.
- Increase test coverage.

.. _Release 3.2: https://github.com/xolox/python-coloredlogs/compare/3.1.4...3.2