Checkout persistence remember data

By default Magento doesn't remember data input for Billing information and Shipping Information in checkout page if a guest leaves your checkout page. A very common scenario is that you as guest user choose to Register. You fill all information and go through all steps. At the end in the step Order Review you realize you forgot something. You click the "edit cart" link at the end of checkout. And it forgets everything you typed in while registering an account, which is really annoying. This module saves Billing and Shipping information so your customers don't need to type it again. It works also with Onestepcheckout and you can add new custom fields to remember.