Prepare new release

Change-Id: If83afa0d3510dc22f7540e194fb66c0d93ebab52
diff --git a/script/korapxml2conllu b/script/korapxml2conllu
index b06136c..c663b13 100755
--- a/script/korapxml2conllu
+++ b/script/korapxml2conllu
@@ -25,7 +25,7 @@
 
 my $lm_training_data = 0;
 
-our $VERSION = '0.6.2';
+our $VERSION = '0.6.3';
 
 our $VERSION_MSG = "\nkorapxml2conllu - v$VERSION\n";
 
@@ -517,7 +517,7 @@
 
 =head1 COPYRIGHT AND LICENSE
 
-Copyright (C) 2021-2022, L<IDS Mannheim|https://www.ids-mannheim.de/>
+Copyright (C) 2021-2024, L<IDS Mannheim|https://www.ids-mannheim.de/>
 
 Author: Marc Kupietz