Checklist

• I am using the current master branch or the latest release. Please indicate.
• I am running on an up-to-date pypsa-eur environment. Update via conda env update -f envs/environment.yaml.

Describe the Bug

The auto-formatting in 58b012e has caused the snakemake workflow to crash, at least for me, with the following error:

SyntaxError in file /home/koen/Dokument/UiT/Research/Modelling/eu-hydrogen/rules/solve_overnight.smk, line 32:
Expecting rule keyword, comment or docstrings inside a rule definition. (solve_overnight.smk, line 32)

This seems to be related to snakemake/snakefmt#208.

Would it be possible to revert the commit in question?