Sorting out some minor things and putting them on codeberg.

First is a version of cat that can also insert blank lines every 5 lines of output, and can also alternate lines fanfold paper style with a pale green background. The serious application is to help people who struggle to follow along lines of dense text when reading stuff. The less serious application is you can install it as "nyancat" and you get what you deserve.

https://codeberg.org/EtchedPixels/ColourCat