Use queryset as context value of CommentListNode

Before it was a list, but behaviour should not change
Fixes #26

@@ -114,7 +114,7 @@ class CommentListNode(BaseCommentNode):
     """Insert a list of comments into the context."""
     """Insert a list of comments into the context."""
 
 
     def get_context_value_from_queryset(self, context, qs):
     def get_context_value_from_queryset(self, context, qs):
-        return list(qs)
+        return qs
 
 
 
 
 class CommentCountNode(BaseCommentNode):
 class CommentCountNode(BaseCommentNode):