Code Style

[ulgens]

I was thinking of adding black as code formatter but wanted to ask before creating the PR. @hahey @hartwork does it sound fine?

[hartwork]

After comparing Black with other tools, it became apparent that the results of yapf are often more readable than Black's and that Black wastes a lot of vertical space without paying back strong enough value. Also, while having projects consistent across the ecosystem is an interesting idea, Black fixes the "wrong problem", because readability is key, not consistency across projects. So if I have a choice, I'd welcome yapf (or something like it), but vote against Black myself.

[hartwork]

PS: Same project with…

• black — https://github.com/git-big-picture/git-big-picture/pull/56/files#diff-3267136480d617b4164aec42d20fa40e20e1d656f314c05d2f2a67031729e6cf
• yapf — https://github.com/git-big-picture/git-big-picture/pull/66/files#diff-a82e0228e8066a044a144906a45985c6adeefafe30e34eaa93b758c16ac483c6

[hartwork]

And here's the yapf config that's in use today: https://github.com/git-big-picture/git-big-picture/blob/master/.style.yapf

[ulgens]

it became apparent that the results of yapf are often more readable than Black's and that Black wastes a lot of vertical space without paying back strong enough value.

I think this is highly subjective but I don't see any value in discussing it with the current contributor count. I don't have strong opinions about both tools. If you think yapf is okay with the config you shared, I can apply it.