Clime

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1. It now shows the doc of program only if the object is a module
2. It is also a command now. You can use ``clime`` from shell.

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1. It now prints the doc of default command if doc of program is not available.

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1. Fixed the bug of program name.

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1. It now catches more exceptions (include KeyboardInterrupt).
2. Added :func:`clime.core.start` which works equally as
:func:`clime.core.customize`

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1. Added :attr:`clime.core.CMD_SUFFIX` and an argument, `white_pattern`, for
:class:`clime.core.Program`.

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1. It now exits with 1 if there has error -- issue `14
<https://github.com/moskytw/clime/issues/14>`_.