Merge pull request #9 from source-nerd/pyup-update-pytz-2018.9-to-2019.1

Update pytz to 2019.1

Author: source-nerd

requirements.txt

@@ -11,7 +11,7 @@ numpy==1.16.0
 pandas==0.24.2
 pyquery==1.4.0
 python-dateutil==2.7.5
-pytz==2018.9
+pytz==2019.1
 requests==2.21.0
 six==1.12.0
 soupsieve==1.9