[Feature Request] Select multiple options from search results

[helgatheviking]

For example, if you are using SelectWoo on an input that searches product titles via Ajax and you have several products all named "Widget Red", "Widget Blue", "Widget Green" etc. When you type "Widget" in the search all of these will be matched and appear as options to choose from. And it would be convenient to allow selecting them all (or some) versus selecting "Widget Red" and then needing to run the "Widget" search again multiple times.