Fix pycodestyle config

Author: impredicative

setup.cfg

@@ -14,7 +14,7 @@ warn_redundant_casts = True
 ignore = E203,E231,E501,E701,E731,W503
 # Ref: http://pycodestyle.pycqa.org/en/stable/intro.html#error-codes
 # Note: These ignores are to make autopep8==1.4.4 work with Python 3.8 assignment expressions: E203,E231,E701
-max-line-length = 120
+max-line-length = 180
 
 [pydocstyle]
 ignore = D100,D101,D102,D103,D104,D105,D106,D107,D203,D213