Full description at https://seguridad-agile.blogspot.com/2020/05/xzoom-mejorado.html
Motivation at https://seguridad-agile.blogspot.com/2020/05/xzoom-mejora-zoom.html
- xzoom taken from debian repo
- modifications to follow mouse taken from https://github.com/mbarakatt/xzoom-follow-mouse
- added command line and runtime options to change that
- added cursor in magnifier
- show new options in title
- support rotations