Xworkflows

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*Bugfix:*

* Fix ``setup.py`` execution on Python3 or non-UTF locale.

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*Bugfix:*

* Allow setting the current state of a :class:`~xworkflows.base.WorkflowEnabled`
instance from a state's name
* Ensure :attr:`~xworkflows.base.Workflow.states` behaves as a proper mapping

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*Bugfix:*

* Fix installation from PyPI

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*Misc:*

* Switch back to setuptools >= 0.8 for packaging.

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*Bugfix:*

* Fix hook registration on custom implementations while inheriting
:class:`~xworkflows.WorkflowEnabled`.

*New:*

* Add support for Python 2.6 to 3.2

*Backward incompatible:*

* The string representation of :class:`~xworkflows.base.State` and :class:`~xworkflows.base.StateWrapper`
now reflects the state's name, as does their :meth:`unicode` representation in Python 2.X.

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*Bugfix:*

* Support passing a :class:`~xworkflows.base.Transition` or a :class:`~xworkflows.base.State` to hooks,
instead of its name.