Added preliminary support for diacritic insensitivity support

Change-Id: I4852a38c68a54159af3553022d2cad3dd0ab0f82
diff --git a/Makefile.PL b/Makefile.PL
index 966bda5..4473073 100644
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -29,6 +29,7 @@
     'Directory::Iterator' => 0,
     'Benchmark'       => 0,
     'Unicode::CaseFold' => 1.00,
+    'Unicode::Normalize' => 0,
     'Carp'            => 0,
     'strict'          => 0,
     'warnings'        => 0,