a lot of improvements (I hope)

[Mo-Gul]

feel free to cherry-pick

[rgieseke]

Good catches!

[Mo-Gul]

Any ideas what is missing for a merge?

[rgieseke]

Any ideas what is missing for a merge?

Time and motivation to review :/

It's a very big one and it mixes fixing obvious mistakes, stylistic issues and conceptual changes. It would be much easier to review if you had started with a smaller PR and if they were scoped thematically.

There are also changes that might relate to differences between bibtex, biblatex, ... and I'm not actually not sure what level of compatibility we aim for.

[Mo-Gul]

You are right, most likely it would have been better to split it into some smaller PRs, but I had a "run" ;)
Most likely it is simplest to just click through the single commits to verify that the LOG message delivers what it promises.

[rgieseke]

I cherry-picked the first commits in #45.