Add tox dependencies

bcb · bcb · commit d1a9bdb5c3d4 · 2016-11-07T09:26:28.000+11:00
Tox fails without pytz, iso8601 and pytest-benchmark
diff --git a/tox.ini b/tox.ini
@@ -11,6 +11,9 @@ deps=
     blinker
     singledispatch
     mock
+    pytz
+    iso8601
+    pytest-benchmark
 setenv =
      PYTHONPATH = .:{envdir}
 commands=
