Update ICU to 58.1

source/data/translit/nl_Title.txt

Index: source/data/translit/nl_Title.txt
diff --git a/source/data/translit/nl_Title.txt b/source/data/translit/nl_Title.txt
index 6226039d8bd5c55d26022abf9a6fc98068ce168c..1243aee767810b79ee2677a5243bd26eed78526e 100644
--- a/source/data/translit/nl_Title.txt
+++ b/source/data/translit/nl_Title.txt
@@ -1,11 +1,13 @@
-# ***************************************************************************
-# *
-# *  Copyright (C) 2004-2015, International Business Machines
-# *  Corporation; Unicode, Inc.; and others.  All Rights Reserved.
-# *
-# ***************************************************************************
+# © 2016 and later: Unicode, Inc. and others.
+# License & terms of use: http://www.unicode.org/copyright.html#License
+#
 # File: nl_Title.txt
-# Generated from CLDR 
+# Generated from CLDR
 #
+
+# Copyright (C) 2011-2013, Apple Inc. and others. All Rights Reserved.
+# Special titlecasing for Dutch initial "ij".
 ::Any-Title();
+# Fix up Ij at the beginning of a "word" (per Any-Title, notUAX #29)
 [:^WB=ALetter:] [:WB=Extend:]* [[:WB=MidLetter:][:WB=MidNumLet:]]? { Ij } → IJ ;
+