Ignore line break warnings

We removed all default disabled warnings, but then should add back in W503
and W504 (split after binary operator).

See PyCQA/pycodestyle#498

Author: micahjsmith

setup.cfg

@@ -27,7 +27,7 @@ universal = 1
 [flake8]
 max-line-length = 99
 exclude = .tox, .git, __pycache__, .ipynb_checkpoints
-ignore = # Keep empty to prevent default ignores
+ignore = W503,W504
 
 [isort]
 include_trailing_comment = True