---------------------------- * code refactoring * added support Django 4.0 and Python 3.10
3.5
----------- * new `group` attribute allows to set buttons visibility - * BACKWARD INCOMPATIBLE - visible() callable now expect 2 params (obj, request)
3.4
----------- * new `display` attribute allows button to be displayed both on changelist/change_form pages
3.3
----------- * deprecate action() new `button()` decorator - action() will be removed in future releases * new `href()` decorator * removed deprecated `link()` decorator * new colored buttons
3.2
----------- * Code refactoring * New Feature: disable buttons when form values are changed * add ability to customize urls and add extra paramenters * new `action_page.html` to be used as is or as template for multi-step actions