Moving notes for assertNumQueries next to the other changes to test infrastructure
Copied 1.6.1 release notes from stable/1.6.x branch.
Changed documentation of HttpResponse.content to indicate it's a bytestring
Merge pull request #2067 from dominicrodger/master

Moving notes for assertNumQueries next to the other changes to test infrastructure
Added 1.6.2 release notes stub.
Fixed #21580 -- Clarified why render() does not return a TemplateResponse object.
Fixed #17413 -- Serialization of form errors along with all metadata.