cohost support

Hello!

I'll be posting quite a bit of math stuff, so LaTeX support in posts and comments would be quite nice. For instance, GitHub supports LaTeX as an extension to Markdown. Link to docs. GitHub uses Mathjax for displaying LaTeX, but I've heard that KaTeX is also a good option.

Thanks in advance.

If so, i'd love to be able to somehow see the unrendered LaTeX markup which produced a particular expression as an aide-mémoire.

[MathJax](https://www.mathjax.org/) support in posts and comments would be Convenient and Desirable. I'll be using LaTeX markup whether or not it's supported, though. ;)

For now, someone's  made a MathJax TeX -> Cohost-compatible-CSS mini-site.