StefanMuelller, 11 days ago German

Hey, ho, I got the rights of my German textbook on HPSG back. \o/

So I will migrate it to @langscipress and it will be available #openAccess and #openSource.

If you have anything that might be improved, please let me know.

Let's see, how long it will take me to convert the old latex code, written with styles for Stauffenburg to the LangSci-Setting.