Fix of "error:isecdom" with angularjs 1.3.0

Hi
Respect and thanks for your very nice multiselect component. I use it and its fine.
Recently I noticed an error in console - "error:isecdom"  ( https://docs.angularjs.org/error/$parse/isecdom ).
The reason was change of angularjs version from 1.2.9 to 1.3.0, where was added the restriction on DOM nodes.
It happens on opening and closing the multi-select, when you define on-open, on-close.
With angularjs 1.2.X there issn't such error.
The fix, that works for me is in commit - replacing the DOM element with selected items.
For me were the selected items the usable argument.
I don't know if it's according to your intentions with the resulting arguments in onOpen / onClose, but this is one of the ways.

To try it see the console log in http://plnkr.co/edit/3ypYOAo1BPxRPWNnqpCE?p=preview and click the multiselect,
and in index.html you can switch the comments on angular version and multiselect.fix version files.