A Unicode Version of Tex2mail

I needed text-form fallback for LaTeX formulas for my Primer on Bezier Curves[1] and after trying AsciiTeX, CATDVI, tex2mail, tex4h, and even pandoc, only tex2mail seemed to yield an even remotely sensible result.

However, that's stretching things a little: it's sensible in the same way that Windows 98 is the hot new OS to use... it's kinda dated for use in 2020, to say the least =)

I found someone's site where they talked about having updated tex2mail to work with Unicode, but running their code literally did nothing, so I figured I'd hit up the original source on CTAN and see if I could just update it to output something a little more modern, myself.

The result is certainly decent enough to use for fallback/embedded code comments, and in order to make it easier for anyone else who might find this useful I've hosted it on github so if anyone uses it and needs something fixed, that's at least possible now.

[1] https://pomax.github.io/bezierinfo