Update tox from 3.4.0 to 3.5.3

pyup-bot · pyup-bot · commit 8899729f3c17 · 2018-10-28T09:29:33.000-07:00
diff --git a/requirements_dev.txt b/requirements_dev.txt
@@ -3,7 +3,7 @@ bumpversion==0.5.3
 wheel==0.31.1
 watchdog==0.9.0
 flake8==3.5.0
-tox==3.4.0
+tox==3.5.3
 coverage==4.5.1
 Sphinx==1.8.0
 twine==1.11.0
