added support and a lazy migration strategy from cookies to localStorage (#5)
added support and a lazy migration strategy from cookies to localStorage (#5)

* added support and a lazy migration strategy from cookies to localStorage

* fixed typo (should be inconsequential, but there's a potential for impact if user agents don't honor the expiry

Hexagenic/wanikaniwallpaper-js,Hexagenic/wanikaniwallpaper-js