Merge pull request #7 from onlyphantom/dependabot/pip/pip-21.1

Bump pip from 19.3.1 to 21.1

Author: onlyphantom

requirements.txt

@@ -10,7 +10,7 @@ networkx==2.4
 numpy==1.17.4  
 opencv-contrib-python==4.1.1.26
 Pillow==8.1.1   
-pip==19.3.1  
+pip==21.1  
 pyparsing==2.4.5   
 python-dateutil==2.8.1   
 PyWavelets==1.1.1