Xlutils

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

- Updated documentation.

- Move to virtualenv/pip based development.

- Move to Read The Docs for documentation.

- Use Travis CI for testing and releases.

- Use features of newer :mod:`testfixtures` in
:class:`~xlutils.view.CheckerView`.

- Python 3 compatibility.

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- Add support for time cells in :class:`~xlutils.view.View`.

- Add support for ``.xlsx`` files in :class:`~xlutils.view.View` at the
expense of formatting information being available.

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

- Added the :mod:`xlutils.view` module.

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- Moved documentation to be Sphinx based.

- Support for :mod:`xlrd` 0.9.1, which no longer has pickleable
books.

.. note:: You may encounter performance problems if you work with
large spreadsheets and use :mod:`xlutils` 1.6.0 with
:mod:`xlrd` versions earlier that 0.9.1.

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

- When using :mod:`xlutils.copy`, the ``datemode`` is now copied across from the
source solving date problems with certain files.

- The :mod:`errorhandler` package is no longer a hard dependency.

- As a minimum, :mod:`xlrd` 0.7.2 and :mod:`xlwt` 0.7.4 are now required.

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- Fix packaging problem caused by the move to git