HP-71B Enhanced Math LEX

[J-F Garnier]

Short update: the final version 2B is available on my page.
I didn’t get any feedback or bug report for the beta release, so there is no functional change, just the VER$ and the compliance to the HP ROM image format (to avoid any additional steps)

A 2C version may come later, but not before 2021. I'm working on an other project right now.

J-F