Update aiohttp-session from 0.8.0 to 1.0.0 (#91)

Author: pyup.io bot

requirements-dev.txt

@@ -5,7 +5,7 @@ pytest-cov==2.4.0
 coverage==4.3.4
 sphinx==1.6.3
 pep257==0.7.0
-aiohttp-session==0.8.0
+aiohttp-session==1.0.0
 aiopg[sa]==0.13.0
 aioredis==0.3.3
 hiredis==0.2.0