flake8: adapt configuration to black code formatter

Author: aabadie

setup.cfg

@@ -14,7 +14,8 @@ disable = locally-disabled,star-args,consider-using-f-string
 msg-template = {path}:{line}: [{msg_id}({symbol}), {obj}] {msg}
 
 [flake8]
-max-line-length = 80
+max-line-length = 88
+extend-ignore = E203
 exclude = .tox,dist,doc,build,*.egg
 max-complexity = 10