Bump version to 2.5.0 and update copyright year

Change-Id: I7ad47c32935fc315ecb9c85048cff459b63e5c73
diff --git a/script/tei2korapxml b/script/tei2korapxml
index 5f69098..eff4fc5 100755
--- a/script/tei2korapxml
+++ b/script/tei2korapxml
@@ -24,7 +24,7 @@
 use KorAP::XML::TEI::Header;
 use KorAP::XML::TEI::Inline;
 
-our $VERSION = '2.4.5-TRIAL';
+our $VERSION = '2.5.0';
 
 our $VERSION_MSG = "\ntei2korapxml - v$VERSION\n";