It looks like a good submission, but I'm still not sure is it's a good "Show HN".
Anyway, for this kind of questions it's better to send an email directly t the mods hn@ycombinator.com because sometimes this threads are unnoticed.
This is the description of a project you made, anyone can download and try it, so it's inside the conditions of a ShowHN. But it's too similar to a blog post, so I'm not 100% sure ...
If it were an interactive online project it would be a clear example of a ShowHN.
But it's not necessary that all the ShowHN are interactive. A few month ago dang (one of the moderators) said that also a book can be a good ShowHN.
Answer to a question about a ShowHN for a book (read the original thread to get all the context): https://news.ycombinator.com/item?id=8765822
> The "try out" rule is important, but adjusts to different kinds of project. Hardware, for example, can't be tried out as easily as software. For a book, I suppose a sample chapter or two would be a fair way of trying it out.
So I guess this is a possible ShowHN.
Good luck with the project.