Merge with https://github.com/ianbollinger/purescript-web-storage

[eskimor]

Now that we have at least two libraries offering the same functionality. We probably should either merge them or base one on top of the other.

[eskimor]

I won't be able to tackle this soon, as I should really focus on my own project right now - so any help on this would be appreciated!

[texastoland]

I should be able to within a week! I think it's a breaking change because of @ianbollinger's point about needing EXCEPTION. I could use help figuring out whether the spec is outdated regarding localstorage raising a SecurityError.

[ianbollinger]

It does appear to throw a SecurityError on some browsers; others just set it to null. https://bugs.chromium.org/p/chromium/issues/detail?id=357625

[texastoland]

Thanks @ianbollinger expect a PR this week!