Scheduled weekly dependency update for week 49 (#241)

* Update cryptography from 2.1.3 to 2.1.4

* Update pynacl from 1.2.0 to 1.2.1

* Update pytest-aiohttp from 0.1.3 to 0.2.0

* Update aiohttp from 2.3.3 to 2.3.5

* Update aiomcache from 0.5.2 to 0.6.0

Author: pyup.io bot

requirements-dev.txt

@@ -4,14 +4,14 @@ sphinx==1.6.5
 pep257==0.7.0
 -e .
 aioredis==1.0.0
-cryptography==2.1.3
+cryptography==2.1.4
 docker-py==1.10.6
-pynacl==1.2.0
-pytest-aiohttp==0.1.3
+pynacl==1.2.1
+pytest-aiohttp==0.2.0
 pytest-cov==2.5.1
 pytest-mock==1.6.3
-aiohttp==2.3.3
+aiohttp==2.3.5
 multidict==3.3.2
 chardet==3.0.4
 yarl==0.15.0
-aiomcache==0.5.2
+aiomcache==0.6.0