Exception on iOS Incognito

[reitzensteinm]

When running on iOS (tested across multiple devices), storage-atom crashes when initializing an atom. Something as simple as this line will crash:

(local-storage (atom {}) :db)

With the exception:

QuotaExceededError: DOM Exception 22: An attempt was made to add something to storage that exceeded the quota.

Related Stack Overflow question:

http://stackoverflow.com/questions/14555347/html5-localstorage-error-with-safari-quota-exceeded-err-dom-exception-22-an

I fixed it by simply wrapping my call in an exception handler like this:

(try (local-storage (atom {}) :db) (catch js/Error e (atom {})))))

I'm happy to do the legwork for a patch that fixes this if that would be helpful, probably by adding a similar try/catch to the StorageBackend deftype items.