Update pep8 from 1.7.0 to 1.7.1 (#304)

pyup.io bot · asvetlov · commit 8abcadb34ecd · 2017-11-15T07:54:03.000+02:00
diff --git a/demos/blog/requirements-dev.txt b/demos/blog/requirements-dev.txt
@@ -1,4 +1,4 @@
 pyflakes==1.6.0
-pep8==1.7.0
+pep8==1.7.1
 pytest==3.2.4
 ipdb==0.10.3
