Relax pep8speaks to adapt black

Author: chkoar

.pep8speaks.yml

@@ -0,0 +1,10 @@
+# File : .pep8speaks.yml
+
+scanner:
+    diff_only: True  # If True, errors caused by only the patch are shown
+    linter: flake8
+
+flake8:
+    max-line-length: 88  # Default is 79 in PEP 8
+    ignore:  # Errors and warnings to ignore
+        - E203