- Use fix-cm.sty for European Computer Modern in some months when it is
  installed on most TeX installations.
- Correct manifest.txt and usefiles.txt.
- Add \preface* command that does not perform a pagebreak.
- Add option `autolanguage' to load of numprint in some months. Increase
  necessary date then. The, delete \npdecimalsign ... entries.
- Add package `leadmark' to move !, ?, :, and ; away form the word.
- Proof natbib section from hhdiss.cls and maybe include it to bgteubner.cls.
  What does it do exactly?