Bump version to 0.4.1.9000

Change-Id: I05c291380a5b3a46f9f94bd503331537cfb51072
diff --git a/script/conllu2korapxml b/script/conllu2korapxml
index b12886c..0058618 100755
--- a/script/conllu2korapxml
+++ b/script/conllu2korapxml
@@ -11,6 +11,8 @@
 my %opts;
 my %processedFilenames;
 
+our $VERSION = '0.4.1.9000';
+
 my $usage=<<EOF;
 Usage: $0 [options] [CoNLL-U-FILE...]