===========================Django 1.11.4 release notes===========================*August 1, 2017*Django 1.11.4 fixes several bugs in 1.11.3.Bugfixes========* Fixed a regression in 1.11.3 on Python 2 where non-ASCII ``format`` valuesfor date/time widgets results in an empty ``value`` in the widget's HTML(:ticket:`28355`).* Fixed ``QuerySet.union()`` and ``difference()`` when combining witha queryset raising ``EmptyResultSet`` (:ticket:`28378`).* Fixed a regression in pickling of ``LazyObject`` on Python 2 when the wrappedobject doesn't have ``__reduce__()`` (:ticket:`28389`).* Fixed crash in ``runserver``'s ``autoreload`` with Python 2 on Windows withnon-``str`` environment variables (:ticket:`28174`).* Corrected ``Field.has_changed()`` to return ``False`` for disabled formfields: ``BooleanField``, ``MultipleChoiceField``, ``MultiValueField``,``FileField``, ``ModelChoiceField``, and ``ModelMultipleChoiceField``.* Fixed ``QuerySet.count()`` for ``union()``, ``difference()``, and``intersection()`` queries. (:ticket:`28399`).* Fixed ``ClearableFileInput`` rendering as a subwidget of ``MultiWidget``(:ticket:`28414`). Custom ``clearable_file_input.html`` widget templateswill need to adapt for the fact that context values``checkbox_name``, ``checkbox_id``, ``is_initial``, ``input_text``,``initial_text``, and ``clear_checkbox_label`` are now attributes of``widget`` rather than appearing in the top-level context.* Fixed queryset crash when using a ``GenericRelation`` to a proxy model(:ticket:`28418`).