Merge pull request #321 from aio-libs/pyup-update-aiohttp-2.3.4-to-2.3.5

Update aiohttp to 2.3.5

Author: jettify

requirements-dev.txt

@@ -1,7 +1,7 @@
 aiohttp-jinja2==0.14.0
 aiohttp-security==0.1.2
 aiohttp-session==2.1.0
-aiohttp==2.3.4
+aiohttp==2.3.5
 aiomysql==0.0.9
 aiopg==0.13.1
 coverage==4.4.2