Update pyyaml from 3.12 to 3.13

pyup-bot · s-m-i-t-a · commit 36ad6989437b · 2018-08-29T10:28:13.000+02:00
diff --git a/requirements/development.txt b/requirements/development.txt
@@ -3,7 +3,7 @@
 bumpversion==0.5.3
 watchdog==0.8.3
 cryptography==2.3.1
-PyYAML==3.12
+PyYAML==3.13
 coverage==4.5.1
 pep8==1.7.1
 pylint==1.8.2
