Form changes cause duplicate files in queue

[dcook-squiz]

Great handy plugin thanks!

It seems that any change events in the form cause the last selected file(s) to get appended to the queue again.

This was found when adding radio buttons to allow the user to select a create location.

It appears that the code is listening for all change events in the form, when it probably only needs to listen for a specific event: jquery.matrixupload2.js#L540