Merge pull request #135 from python-hyper/requires-io-master

[requires.io] dependency update on master branch

Author: Lukasa

tox.ini

@@ -19,7 +19,7 @@ commands = flake8 --max-complexity 10 hpack test utils
 [testenv:bench]
 deps=
     {[testenv]deps}
-    pytest-benchmark==3.1.0
+    pytest-benchmark==3.1.1
 commands= py.test {toxinidir}/bench/ --benchmark-only --benchmark-group-by=name --benchmark-autosave --benchmark-compare --benchmark-min-rounds=500000
 
 [testenv:create_test_output]