Mariusz Felisiak 1088a9777d [2.2.x] Fixed #30621 -- Fixed crash of __contains lookup for Date/DateTimeRangeField when the right hand side is the same type.
Thanks Tilman Koschnick for the report and initial patch.
Thanks Carlton Gibson for the review.

Regression in 6b048b364ca1e0e56a0d3815bf2be33ac9998355.
Backport of 7991111af12056ec9a856f35935d273526338c1f from master
2019-07-10 10:34:49 +02:00
..
2014-11-04 09:26:40 +00:00