Cookies & Sessions are no longer persisted after app terminate

[berserkore]

Hey @ks32,

Thanks for this great lib, It looks like cookies & session are no longer persisted after the app has been closed.
It used to be working on the original version (latest) of xwalk.
Please, do you know a proper way can persist cookies/sessions before the app close then restore cookies/sessions after the webview is created?

King regards!