Update AUTHORS, classifiers, Copyright

Author: saimn

AUTHORS

@@ -18,6 +18,7 @@ alphabetical order):
 - David Siroky
 - Edward Betts
 - Edwin Steele
+- Elges István
 - François D. (@franek)
 - @Glandos
 - Giel van Schijndel

LICENSE

@@ -1,5 +1,5 @@
 The MIT License (MIT)
-Copyright (c) 2009-2020 - Simon Conseil
+Copyright (c) 2009-2021 - Simon Conseil
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to

setup.cfg

@@ -17,6 +17,7 @@ classifiers =
     Programming Language :: Python :: 3.6
     Programming Language :: Python :: 3.7
     Programming Language :: Python :: 3.8
+    Programming Language :: Python :: 3.9
     Topic :: Internet :: WWW/HTTP
     Topic :: Multimedia :: Graphics :: Viewers
     Topic :: Software Development :: Libraries :: Python Modules