Opster

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- adjust indentation level in multiline docstrings (compare `1`_ and `2`_)
- small fix for internal getopt exception handling

.. _1: http://opster.readthedocs.org/en/latest/tests.html#multihelp1
.. _2: http://opster.readthedocs.org/en/latest/tests.html#multihelp2

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- fix help display in case middleware returns original function

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- fix help display when there is no __doc__ declared for function
- ``dict`` type `handling`_
- ``.help()`` attribute for every function, printing help on call

.. _handling: http://opster.readthedocs.org/en/latest/overview.html#options-processing

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- fix option display for a list of subcommands if docstring starts with a blank
line

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- _completion was failing to work when global options were supplied to command
dispatcher

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- when middleware was used and command called without arguments, instead of
help, traceback was displayed