Scheduled weekly dependency update for week 13 (#142)

* Update cryptography from 2.2.1 to 2.2.2

* Update aiohttp from 3.1.0 to 3.1.1

Author: pyup.io bot

requirements-dev.txt

@@ -10,6 +10,6 @@ aiopg[sa]==0.13.2
 aioredis==1.1.0
 hiredis==0.2.0
 passlib==1.7.1
-cryptography==2.2.1
-aiohttp==3.1.0
+cryptography==2.2.2
+aiohttp==3.1.1
 pytest-aiohttp==0.3.0