We should add "canceled" status options to query parameters, e.g. add a dropdown like:

Cancelled:  [ Show Only Active Events           V ]
            [ Show Only Cancelled Events          ]
            [ Show Active and Cancelled Events    ]

So by default it would only show active events, but you could show or search for cancelled events if you wanted.
(Remove any presumptuous isCancelled filters in Month and Day view builder methods.)