Start with next problem set
Fix points
Start with 03-01, #8
Got 1.1 and 1.2 done. GH-8
Change reference to GitHub issues
Add a new subsection (GH-8)
Start typing (GH-8)
Remove commath
Switch document language to english
Work on 1.3, still work left. (GH-8)
More math commands
Some changes on GH-8
Finish problem 3, close GH-10
Note missing content
Add last part of the problem 3 (GH-10)
Add missing part
Get bibliography to work on my machine

One could include `central-bibtex` as a submodule.
Replace p
Merge new header
Write more, correct errors