Bump version to 0.4.1.9000

Change-Id: I05c291380a5b3a46f9f94bd503331537cfb51072
diff --git a/script/korapxml2conllu b/script/korapxml2conllu
index 17191a1..6b84910 100755
--- a/script/korapxml2conllu
+++ b/script/korapxml2conllu
@@ -17,7 +17,7 @@
 my %plain_texts;
 my %sentence_ends;
 
-our $VERSION = '0.4.1';
+our $VERSION = '0.4.1.9000';
 
 our $VERSION_MSG = "\nkorapxml2conllu - v$VERSION\n";