Xlsxwriter

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

* Reverted back to using codecs for file encoding (versions <= 0.3.1) to avoid
numerous UTF-8 issues in Python2/3.

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

* Added Chart line smoothing option. Thanks to Dieter Vandenbussche.

* Added Http Server example (:ref:`ex_http_server`). Thanks to
Alexander Afanasiev.

* Fixed inaccurate column width calculation. Closes :issue:`27` Thanks to John Yeung.

* Added chart axis font rotation.

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

* Minor packaging fixes.
:issue:`14` and :issue:`19`.


* Fixed explicit UTF-8 file encoding for Python 3.
:pull:`15` from Alexandr Shadchin.

* Fixed invalid string formatting resulted in misleading stack trace.
:pull:`21` from Andrei Korostelev.

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

* Speed optimizations. The module is now 10-15% faster on average.

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

* Added chart support. See the :ref:`chart_class`, :ref:`working_with_charts`
and :ref:`chart_examples`.

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

* Added worksheet sparklines. See :ref:`sparklines`, :ref:`ex_sparklines1` and
:ref:`ex_sparklines2`