Update pytest from 3.0.4 to 3.0.5 (#86)

Author: pyup.io bot

requirements-ci.txt

@@ -1,7 +1,7 @@
 -r requirements.txt
 -e .
 flake8==3.2.1
-pytest==3.0.4
+pytest==3.0.5
 pytest-asyncio==0.5.0
 pytest-cov==2.4.0
 pytest-mock==1.5.0