Bump copyright year.

COPYING

@@ -1,4 +1,4 @@
-Copyright (c) 2011-2020 Matthew Petroff
+Copyright (c) 2011-2021 Matthew Petroff
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of
 this software and associated documentation files (the "Software"), to deal in

src/js/libpannellum.js

@@ -1,6 +1,6 @@
 /*
  * libpannellum - A WebGL and CSS 3D transform based Panorama Renderer
- * Copyright (c) 2012-2020 Matthew Petroff
+ * Copyright (c) 2012-2021 Matthew Petroff
  * 
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

src/js/pannellum.js

@@ -1,6 +1,6 @@
 /*
  * Pannellum - An HTML5 based Panorama Viewer
- * Copyright (c) 2011-2020 Matthew Petroff
+ * Copyright (c) 2011-2021 Matthew Petroff
  * 
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

utils/multires/generate.py

@@ -5,7 +5,7 @@
 
 # generate.py - A multires tile set generator for Pannellum
 # Extensions to cylindrical input and partial panoramas by David von Oheimb
-# Copyright (c) 2014-2020 Matthew Petroff
+# Copyright (c) 2014-2021 Matthew Petroff
 # 
 # Permission is hereby granted, free of charge, to any person obtaining a copy
 # of this software and associated documentation files (the "Software"), to deal