Merge pull request #24 from buxx/pyup-scheduled-update-2018-02-12

requirements.txt

 pluggy==0.6.0
 psutil==5.4.3
 py==1.5.2
-pyglet==1.3.0
-pytest==3.3.2
+pyglet==1.3.1
+pytest==3.4.0
 python-dateutil==2.6.1
 PyYAML==3.12
 redis==2.10.6