Update tox from 3.15.2 to 3.16.0 (#385)

pyup-bot · web-flow · commit 0a1b7bf0029d · 2020-06-28T15:05:49.000+05:30
diff --git a/requirements-testing.txt b/requirements-testing.txt
@@ -7,7 +7,7 @@ autopep8==1.5.3
 mypy==0.782
 py-spy==0.3.3
 codecov==2.1.7
-tox==3.15.2
+tox==3.16.0
 mccabe==0.6.1
 pylint==2.5.3
 rope==0.17.0
