Add pyproject.toml and some more customizable parameters

[timyerg]

Hello! Thank you for contributing to the project. I see you added some parameters that were default and some fixes to the code. Did you test all the functionality? To be honest, I am not very comfortable with Github and am not sure what to do now. I guess, after testing it should be:

• merge pull request
• update pip version

Is that correct?

[nielstron]

Hey, yes that's correct. I ran the code locally and produced some figures from it using i.e. edge_color = None. To be sure that I did not introduce anything specific to my setup/platform it would be good if you run the code yourself as well. You can for example

# if you already have clone of the repo run in its root
git remote add nielstron https://github.com/nielstron/venny4py.git
git fetch nielstron
git checkout nielstron/main
# otherwise run
git clone https://github.com/nielstron/venny4py.git
cd venny4py

# run whatever code you ran before to test that everything works to your satisfaction
...

If you agree with everything, hit merge, update the version number in pyproject.toml and upload the new version to pypi :)

[timyerg]

Great, thank you for the instructions. I will try to merge it after testing.

[timyerg]

Looks like it worked.

Thank you again for providing additional parameters that had default values only and your help with merging.