Debouncing of JS Events

Events fired by the Bokeh JS-Layer run straight to the Python handlers.

So if the user scrolls the wheel a lot of requests are burdening the Python routines handling requests.

A common scheme to deal with that is debouncing. Debouncing has to happen at the issuer-side to become effective. On the responser side debouncing will fail due to the time lag between sender and recipient.

Volker