Use 88 as the line length to be compatible with Black

[houseroad]

Black by default uses 88 characters as line length, and reasoning is here: https://black.readthedocs.io/en/stable/the_black_code_style/current_style.html#line-length

To be compatible with Black, using 88 seems a wise choice.

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[Isotr0py]

But PEP-8 recommends maximum line length with 79 characters: https://peps.python.org/pep-0008/#maximum-line-length. We should use PEP-8 standard instead of black's default value here.