Fix flake8 warnings about line length now that black uses 88.

Jason R. Coombs · Jason R. Coombs · commit e576d6361222 · 2018-11-04T03:01:35.000-05:00
diff --git a/.flake8 b/.flake8
@@ -0,0 +1,6 @@
+[flake8]
+# defer to black http://bit.ly/2CKCP8W
+max-line-length = 88
+ignore =
+	E203
+	W503
