First, I'd like to thank the author for this article, it's very interesting and useful. I would recommend that in the future the author take larger/clearer screenshots (or link to expanded images) and break down the steps in greater detail. I also recommend the creation of dummy tables at the beginning so that anyone attempting to recreate this package is using the same data and not initially dealing with whatever idiosyncrasies they have in their own dbs. I found it exceedingly difficult to recreate this package and ended up spending a helluva lot of time squinting, muttering, and guessing, and it doesn't sound like I'm the only one.

Thanks for the article and I look forward to more.