Django 2.1.1 release notes

Django 2.1.1 fixes several bugs in 2.1.

• Fixed a race condition in that could result in data loss ().
• Fixed a regression where QueryDict.urlencode() crashed if the dictionary contains a non-string value (#29627).
• Fixed a regression in Django 2.0 where combining Q objects with __in lookups and lists crashed ().
• Fixed translation failure of ‘s “overflow” error message (#29623).
• Fixed a regression where the admin change form crashed if the user doesn’t have the ‘add’ permission to a model that uses TabularInline ().
• Fixed the test client’s JSON serialization of a request data dictionary for structured content type suffixes (#29662).
• Made the admin change view redirect to the changelist view after a POST if the user has the ‘view’ permission ().
• Fixed admin change view crash for view-only users if the form has an extra form field (#29682).
• Fixed crash if doesn’t accept the obj argument ().