Django-datatable

* Deprecate table option `ext_button`.
* Make table template inheritable.

v.0.3.1
* Fix bug about template context, campatible with Django 1.10 & 1.11.

* Fix error about loading ajax data when serving requests with multiple processes in production env.

* Added compatibility with Python 3
* Make checkboxfield related to object field.
* Added ImageColumn

* PyPi support

* Fix bug about escape issue for ajax data source.

* Fix bug about sorting field across different relations.