Auto-argcomplete

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* 0.9.4.6
* Update README for new zsh description feature
* Display option help when using zsh
* Make loading completion files faster

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* 0.9.4.5
* Fix install_requires

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* 0.9.4.4
* Simplify setup.py
* version.py -> __version__.py
* Add newline to auto_argcomplete_r

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* 0.9.4.3
* Fix path error with user expansion
* Not overwrite default _python function

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* 0.9.4.2
* Make long_description from README
* misc

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* 0.9.4.1
* autoarg -> auto_argcomplete