FEATURE: Make all props editable

[kdambekalns]

Props that are not listed in @styleguide.props or a prop set cannot be edited. I'd think that anything on the "root" of a component is it's "public API" and should be testable in Monocle.

I'd suggest to automatically offer all props for editing. Or at least provide a "switch" to enable that (globally or per component).

What do you think?