Fixed #24829 -- Allowed use of TemplateResponse in view error handlers.

docs/releases/1.9.txt

@@ -385,6 +385,10 @@ Requests and Responses
 * The default 40x error views now accept a second positional parameter, the
   exception that triggered the view.
 
+* View error handlers now support
+  :class:`~django.template.response.TemplateResponse`, commonly used with
+  class-based views.
+
 Tests
 ^^^^^