[Feature Request] debounce for dcc.Dropdown(multi=True)

[sdementen]

When using the dcc.Dropdown with multi=True, each selection/unselection of an item trigger a change of the value prop.
It would be great to have a "debounce" feature implemented where the value is changed only when the dropdown is closed (or the x / deselect all shortcut is clicked) and the selection has changed.

[camdecoster]

Thanks for the suggestion! It's a good idea and one that we'll try to get someone to look into.