Merge pull request #67 from asingh33/dependabot/pip/pyyaml-5.4

Bump pyyaml from 5.1 to 5.4

Author: asingh33

requirements.txt

@@ -23,7 +23,7 @@ pyparsing==2.4.0
 PyQt5==5.12.1
 PyQt5-sip==4.19.15
 python-dateutil==2.8.0
-PyYAML==5.1
+PyYAML==5.4
 scikit-learn==0.20.3
 scipy==1.2.1
 six==1.12.0