I just didn't realize there is no fully defined demo and to test the code sample requires some steps that I would need to discover myself. The article was clear

I just didn't realize there is no fully defined demo and to test the code sample requires some steps that I would need to discover myself. The article was clear, and I figured the post-library blurb referred to "free of dependencies" (akin to some of the single header unit test frameworks). After seeing the avendish compilation steps (last time I needed Boost was a real hassle) I decided I really wasn't motivated enough to try the demos myself. If I had a need for UI writing right now, I would probably take the time to clone and compile.