Update copyright year

Author: generalmimon

lib/IO/KaitaiStruct.pod

@@ -18,7 +18,7 @@ On Windows:
 
     # Instantiate from file
     $kaitai = MyModule->from_file("some_binary");
-    
+
     # Instantiate from memory
     use IO::KaitaiStruct;
     $buf = "\xAA\xBB\xCC\xDD\xEE\xFF";
@@ -57,7 +57,7 @@ Sergey Zelenyuk <[email protected]>
 
 =head1 COPYRIGHT AND LICENSE
 
-Copyright 2015-2017 Kaitai Project: MIT license
+Copyright 2015-2020 Kaitai Project: MIT license
 
 Permission is hereby granted, free of charge, to any person obtaining
 a copy of this software and associated documentation files (the