Pin aiohttp to 3.2.1 for testing; later versions error with aioresponses

Author: mvantellingen

tox.ini

@@ -3,19 +3,20 @@ envlist = py27,py34,py35,py36,pypy
 
 
 [testenv]
-extras = 
+extras =
     test
     xmlsec
     py{35,36}: async
     py{35,36}: tornado
-deps = 
-    py{35,36}: aioresponses==0.4.1
+deps =
+    py{35,36}: aioresponses==0.4.2
+    py{35,36}: aiohttp==3.2.1
     py{35,36}: pytest-asyncio==0.5.0
 commands = coverage run --parallel -m pytest {posargs}
 
 
 [testenv:pypy]
-extras = 
+extras =
     test
     xmlsec
 commands = python -m pytest {posargs}