Throw an exception if attempting to ask an async question when we're awaiting the response from a previous question.
Throw an exception if attempting to ask an async question when we're awaiting the response from a previous question.

F2Andy/quest,F2Andy/quest,siege918/quest,siege918/quest,textadventures/quest,textadventures/quest,textadventures/quest,siege918/quest,siege918/quest,textadventures/quest,F2Andy/quest