Merge pull request #544 from fantix/pyup-update-aiohttp-3.5.0-to-3.6.0

Update aiohttp to 3.6.0

Author: fantix

requirements_dev.txt

@@ -6,7 +6,7 @@ wheel==0.33.0  # pyup: update minor
 cryptography==2.7  # pyup: update minor
 psycopg2-binary==2.8.1  # pyup: update minor
 sanic==19.3.1  # pyup: update minor
-aiohttp==3.5.0  # pyup: update minor
+aiohttp==3.6.0  # pyup: update minor
 tornado==6.0  # pyup: update minor
 async_generator==1.10  # pyup: update minor
 quart==0.10.0;python_version>="3.7"  # pyup: update minor