Missing version file

[LukasHats]

Currently, we are missing a version file for the CLI argument (see also here). The Version output by the CLI would be necessary to adjust the nf-core module, where the version is hardcoded, see also issue here

[jmuhlich]

You need to install the package with pip (pip install -e while you are working on the package itself). When pip builds the wheel, it will automatically and temporarily install setuptools_scm which is the piece that generates the version file based on git tags etc.