Any way for the list to stay open during multi selection?

[thorhallur]

Thanks for a great plugin!
Once thing I ran into during the multi-select usage is that people want to be able to keep the list open while they are selecting items from their multi-selector chosen control. Is there any way I can just specify a parameter somewhere for those instances of the control where I'd want this behavior? Btw, holding down Ctrl while selecting items on the current control works on Mac, but not so much on PC as it messes up with the zoom settings of the user's browser (at least with Chrome). Thanks for your help!

[tjschuck]

Duplicate of #1546 -- please leave any feedback you have there.

Thanks!