Use Manager.from_queryset() to simplify ReleaseManager (#1305)
Use Manager.from_queryset() to simplify ReleaseManager (#1305)


python/pythondotorg,manhhomienbienthuy/pythondotorg,proevo/pythondotorg,manhhomienbienthuy/pythondotorg,manhhomienbienthuy/pythondotorg,python/pythondotorg,manhhomienbienthuy/pythondotorg,proevo/pythondotorg,proevo/pythondotorg,python/pythondotorg,proevo/pythondotorg,python/pythondotorg