Merge pull request #254 from fantix/pyup-update-aiohttp-3.3.1-to-3.3.2

Update aiohttp to 3.3.2

Author: fantix

requirements_dev.txt

@@ -8,7 +8,7 @@ cryptography==2.2.2
 PyYAML==3.12
 psycopg2-binary==2.7.4
 sanic==0.7.0
-aiohttp==3.3.1
+aiohttp==3.3.2
 tornado==4.5.3
 async_generator==1.9.0
 quart==0.6.0;python_version>="3.6"