==========================Django 2.1.3 release notes==========================*November 1, 2018*Django 2.1.3 fixes several bugs in 2.1.2.Bugfixes========* Fixed a regression in Django 2.0 where combining ``Q`` objects with ``__in``lookups and lists crashed (:ticket:`29838`).* Fixed a regression in Django 1.11 where ``django-admin shell`` may hangon startup (:ticket:`29774`).* Fixed a regression in Django 2.0 where test databases aren't reused with``manage.py test --keepdb`` on MySQL (:ticket:`29827`).* Fixed a regression where cached foreign keys that use ``to_field`` wereincorrectly cleared in ``Model.save()`` (:ticket:`29896`).* Fixed a regression in Django 2.0 where ``FileSystemStorage`` crashes with``FileExistsError`` if concurrent saves try to create the same directory(:ticket:`29890`).