Support default values

[hansthen]

This is a feature request rather than an issue. When switching between pages in a multi-page app, the previously selected item is lost. Currently, the user has to select a value by searching for it. We'd like to store the selected item in state, so that we can remember it after we switch pages.

[m-wrzr]

There is now an option to provide a default return value. Thanks for the suggestion!