black recommendataions

Author: Sparks29032

.flake8

@@ -8,5 +8,6 @@ exclude =
     labpdfproc/_version.py,
     doc/manual/source/conf.py
 max-line-length = 115
-# Ignore some style 'errors' produced while formatting by 'black'
-ignore = W503
+# Ignore some style 'errors' produced while formatting by 'black' (see link below)
+# https://black.readthedocs.io/en/stable/guides/using_black_with_other_tools.html#labels-why-pycodestyle-warnings
+ignore = E203, E701