Can't download drag.limit, drag.step, and drag.scroll from downloader on website

When you check the " jQuery.event.drag" box on the jquery++ website to download the custom downloader, you only get the code from drag.js, and not any of the sub plugins for it. In fact, it appears you can only get those from the AMD/Full Download zip file, as there's no way to download them from the custom downloader. 

This is confusing, especially since drag.limit is in one of the examples on the site. When trying to use it in my own application, it just threw me an error, and it's only by looking through the source here on gitHub that I noticed I was missing some stuff in my download.