Fix flake8 check on Windows

Author: fguillot

.github/workflows/ci.yml

@@ -29,4 +29,4 @@ jobs:
         python setup.py test
     - name: PEP8
       run: |
-        flake8 --max-line-length 120 *.py
+        flake8 --max-line-length 120

LICENSE

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2016-2020 Frederic Guillot
+Copyright (c) 2016-2021 Frederic Guillot
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal