I think this `liszt:reset` event is going to lead to confusion. It seems like the expected behavior would be for Chosen to go back to the value the field had when the page loaded (as in a form reset). Instead, this is just the "deselect" behavior that we've layered on top of a single select.

`lizst:deselect` makes more sense since the option to turn this on is called `allow_single_deselect`.