It doesn't fulfill the pretty-formatting part, but I created Heine with the purpose of being more writable and readable than LaTeX: https://xigoi.srht.site/hein

It doesn't fulfill the pretty-formatting part, but I created Heine with the purpose of being more writable and readable than LaTeX: https://xigoi.srht.site/heine/ https://xigoi.srht.site/heine/