* API listing views no longer fail when no site records are defined (Karl Hobley)
* Fixed crash in XML sitemap generator when all pages on the site are private (Stein Strindhaug)
* Fixed incorrect z-index on userbar causing it to appear behind page content (Stein Strindhaug)
* Fixed error in Postgres search backend when searching specific fields of a ``specific()`` Page QuerySet (Bertrand Bordage, Matt Westcott)
* Fixed error on Elasticsearch backend when passing a QuerySet as an ``__in`` filter (Karl Hobley, Matt Westcott)
* ``__isnull`` filters no longer fail on Elasticsearch 5 (Karl Hobley)
* Prevented intermittent failures on Postgres search backend when a field is defined as both a ``SearchField`` and a ``FilterField`` (Matt Westcott)