Establish global logger object

Change-Id: Ia508e54e658f8d70921c0d7d52e48c710971807e
diff --git a/Makefile.PL b/Makefile.PL
index b055a82..918ef02 100644
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -23,7 +23,8 @@
   PREREQ_PM => {
     'XML::CompactTree::XS'     => '0.03',
     'XML::LibXML::Reader' => '2.0201',
-    'IO::Compress::Zip' => '2.091'
+    'IO::Compress::Zip' => '2.091',
+    'Log::Any' => '1.708'
   },
   MIN_PERL_VERSION => '5.016',
   EXE_FILES => ['script/tei2korapxml']