Changes

A continuation of [[Redesigning Patent Database]] that aims to write faster, more centralized code to deal with data from the United States Patent and Trademark Office (USPTO). By having an end-to-end pipeline we can easily reproduce or update data without worrying about unintentional side effects or missing data. Currently, it succeeds in bulk downloading from the USPTO; streaming file splitting, that is, splitting large concatenated files into their component parts in-memory; and parsing of XML to Java objects, APS to Java Maps, and maintenance fee data to Java objects.