Update pytest from 3.2.4 to 3.4.1

pyup-bot · pyup-bot · commit 6fc4a4a7a44c · 2018-03-05T15:09:10.000+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==1.7.1
-pytest==3.2.4
+pytest==3.4.1
 ipdb==0.10.3
