Update setup.py

[stheid]

https://setuptools.readthedocs.io/en/latest/setuptools.html#including-data-files
according to the official documentation of setuptools, the directory separator should be /, even on windows

[modelonrobinandersson]

Hi @stheid, I am unable to see anything in the documentation about the separators, is still the case? Sorry for the lack of replies.

[stheid]

@modelonrobinandersson Yep, the documentation just moved: https://setuptools.pypa.io/en/latest/userguide/datafiles.html#package-data

See the first note

[modelonrobinandersson]

Closing this as it was resolved in 20b9ad8.
I notice that the os.path.join might be redundant as well, but I will leave this for now as we are planning on reworking this when we focus on #203

[beutlich]

Closing this as it was resolved in 20b9ad8.

I would not call it resolved: This PR was not about replacing os.path.sep concatenation by os.path.join operations, but using the POSIX slash.

[modelonrobinandersson]

Sorry @beutlich you are right I was a bit too quick when I closed this, I have created #206 to also replace the use of os.path.join since that would also not be proper solution according to the documentation.