Proprietary font use

[falkTX]

Hi there.

In the interest of packaging cf modules in linux distributions, I have noticed 2 fonts that you are using that have proprietary licenses:

ArialBlack.ttf

This one is from Microsoft Windows as far as I can tell, and https://docs.microsoft.com/en-us/typography/fonts/font-faq lists the rules for it. The redistribution section states this:

[...] you may not redistribute the Windows fonts. You may not copy them to other computers or servers [...]

So I think the use of it in your project breaks this license. It should be replaced by a more liberally licensed font.

LEDCalculator.ttf

The only license I can find about this font says

Free for personal use

Which makes it questionable whether redistribution and rehosting is okay or not.

There must be some other font that looks like it. Would it be possible to change/remove the LEDCalculator.ttf font?

Thank you for your time.