Release Version 1.0.1

This release fixes a couple of bugs relating to using `magic.bash` in nested scripts (see !4) and to
formatting multi line error messages (see !5). Especially the latter has user-facing impact and
should make some of your error messages more pleasant to read.

Apart from that, the documentation received some love and all files in this repository carry a
proper copyright notice. The project is now basically REUSE 3.3 compliant, getting a badge to prove
this is a WIP for the next release.

Happy hacking!