Merge pull request #275 from aio-libs/pyup-update-aiopg-0.13.0-to-0.13.1

Update aiopg to 0.13.1

Author: jettify

requirements-dev.txt

@@ -3,7 +3,7 @@ aiohttp-security==0.1.1
 aiohttp-session==1.0.0
 aiohttp==2.2.5
 aiomysql==0.0.9
-aiopg==0.13.0
+aiopg==0.13.1
 coverage==4.4.1
 docker-compose==1.16.1
 docker-py==1.10.6