It's been a while since I worked on this project, but the problems I had at the time were
The XML format they use has a nonstandard schema that didn't work with the parsing library I used
Some of the data are invalid according to their schema
These shouldn't be too difficult to address, but you're right, their XML files require a few modifications to work with this library, which are manually applied to the version bundled with this repo. I'll look into fixing this when I get a chance.
Output: