Xlsxwriter

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

* Added checks and warnings for data validation limits.
:issue:`89`.

* Added option to add hyperlinks to images. Thanks to Paul Tax.

* Added Python 3 Http server example. Thanks to Krystian Rosinski.

* Added :func:`set_calc_mode` method to control automatic calculation of
formulas when worksheet is opened. Thanks to Chris Tompkinson.

* Added :func:`use_zip64` method to allow ZIP64 extensions when writing
very large files.

* Fix to handle '0' and other number like strings as number formats.
:issue:`103`.

* Fix for missing images in ``in_memory`` mode.
:issue:`102`.

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

* Added date axis handling to charts. See :ref:`ex_chart_date_axis`.
:feature:`73`.

* Added support for non-contiguous chart ranges.
:feature:`44`.

* Fix for low byte and control characters in strings.
:issue:`86`.

* Fix for chart titles with exclamation mark.
:issue:`83`.

* Fix to remove duplicate :func:`set_column` entries.
:issue:`82`.

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

* Added interval unit option for category axes.
:feature:`69`.

* Fix for axis name font rotation.

* Fix for several minor issues with Pie chart legends.

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

* Added :ref:`Chartsheets <Chartsheet>` to allow single worksheet charts.
:feature:`10`.

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

* Added :ref:`chart object positioning and sizing <chart_layout>` to allow
positioning of plotarea, legend, title and axis names.
:feature:`66`.

* Added :func:`set_title()` ``none`` option to turn off automatic titles.

* Improved :func:`define_name()` name validation.

* Fix to prevent modification of user parameters in
:func:`conditional_format()`.

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

* Added ``in_memory`` :func:`Workbook` constructor option to allow XlsxWriter
to work on Google App Engine.
:feature:`28`.