title: How to save Mobx state in sessionStorage
body: <p>Trying to essentially accomplish this <a href="https://github.com/elgerlambert/redux-localstorage" rel="noreferrer">https://github.com/elgerlambert/redux-localstorage</a> which is for Redux but do it for Mobx. And preferably would like to use sessionStorage. Is there an easy way to accomplish this with minimal boilerplate?</p>