Django 1.8.6 release notes

Django 1.8.6 adds official support for Python 3.5 and fixes several bugs in 1.8.5.

• Fixed a regression causing to ignore prefetch_related() on its queryset ().
• Allowed “mode=memory” in SQLite test database name if supported (#12118).
• Fixed system check crash on ForeignKey to abstract model ().
• Allowed filtering over a RawSQL annotation (#25506).
• Made the database function idempotent on SQLite ().
• Avoided a confusing stack trace when starting runserver with an invalid setting (#25510). This regression appeared in 1.8.5 as a side effect of fixing .
• Made deferred models use their proxied model’s _meta.apps for caching and retrieval (#25563). This prevents any models generated in data migrations using QuerySet.defer() from leaking to test and application code.
• Fixed crash with contrib.postgres.forms.SplitArrayField and IntegerField on invalid value ().
• Added a helpful error message when Django and South migrations exist in the same directory (#25618).
• Fixed a regression in URLValidator that allowed URLs with consecutive dots in the domain section (like http://example..com/) to pass ().
• Fixed a crash with and BaseModelAdmin.to_field_allowed (#25622).