Improve test suite to work without warnings in recent versions of mojo

Change-Id: I8990a78ba00e835b2a569ea3aecebb1f18cb4bba
diff --git a/script/tei2korapxml b/script/tei2korapxml
index 07744e1..690cf2d 100755
--- a/script/tei2korapxml
+++ b/script/tei2korapxml
@@ -33,7 +33,7 @@
   1;
 };
 
-our $VERSION = '0.02';
+our $VERSION = '0.03';
 
 our $VERSION_MSG = "\ntei2korapxml - v$VERSION\n";