@TeXnician eheh I wanted to make everyone know that I know that the code has issues, and that I want to address them. Too many people helped and I did not want to let them down or to make them think I did not want their help.
@UlrikeFischer Thanks for your comment re hyperref urls with #. I am on TL16 with hyperref.sty 2017/03/14 v6.85a Hypertext links for LaTeX and get no errors running pdflatex on a terminal. tex.stackexchange.com/a/366941/15925
@TeXnician It's an "alpha" package. I'm bound to make many changes day by day... I don't want to clutter anything with a changelog, especially when I do not commit the code consistently. As said in the docs, that will change after v.1.0.0
@Moriambar Good idea (but please also with some math) and I have another one: Scan the font directory and list fonts that would with current setup (font size, margins) would be optimal (but that's Lua based again).