x11-calc now available on Flathub

[Mike T.]

This may not interest everyone but for some reason somebody decided to put quite a lot of time and effort into packaging 'x11-calc' using Flatpak. Quite why they thought it was a good idea I still can't figure out but I'm quite pleased they did, as in the process they encouraged me to make a number of minor improvements and added a launcher that allows you to select which emulator and command line options should be used.

Credit for making this possible and producing the launcher really belongs to 'macmpi', I just went along for the ride, but the result is that Flatpak should allow you to run 'x11-calc' on multiple distributions!

Note that as Flatpak does not package any 'XLFD' fonts you may need to install the base X11 font set to get the fonts to look the right size. One day I'll get round to replacing the fonts with bitmaps...