Update python-dateutil from 2.6.0 to 2.6.1 (#29)

pyup-bot · davidemoro · commit 93a3876b18e9 · 2017-07-11T15:06:02.000+02:00
diff --git a/requirements_dev.txt b/requirements_dev.txt
@@ -21,7 +21,7 @@ py==1.4.34
 Pygments==2.2.0
 pytest==3.1.2
 pytest-cookies==0.2.0
-python-dateutil==2.6.0
+python-dateutil==2.6.1
 pytz==2017.2
 PyYAML==3.12
 requests==2.18.1
