Update ICU to 58.1

source/data/translit/cs_cs_FONIPA.txt

Index: source/data/translit/cs_cs_FONIPA.txt
diff --git a/source/data/translit/cs_cs_FONIPA.txt b/source/data/translit/cs_cs_FONIPA.txt
index ffbcf93bc61627ea4f7ea34f944b4dda9b367d19..01236ef692e084b75ffcc2144ac6966efcf1c869 100644
--- a/source/data/translit/cs_cs_FONIPA.txt
+++ b/source/data/translit/cs_cs_FONIPA.txt
@@ -1,14 +1,27 @@
-# ***************************************************************************
-# *
-# *  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: cs_cs_FONIPA.txt
-# Generated from CLDR 
+# Generated from CLDR
+#
+
+# Tranformation from Czech to Czech in IPA transcription (cs_FONIPA).
+# The transcription is not fully phonemic since we mark allophonic variations
+# of /m/, /n/, /x/ and /ɦ/.
+#
+# http://en.wikipedia.org/wiki/Czech_alphabet
+# http://en.wikipedia.org/wiki/Czech_language#Phonology
+# http://en.wikipedia.org/wiki/Czech_orthography
 #
+# Transform input to normalized form NFC, and to lowercase.
 ::NFC;
 ::Lower;
+#
+#
+#
+#
+# Digraphs.
+#
 ch } [ bdďjlmnňrřvwzž ] → ɣ ;
 ch → x ;
 dě → ɟɛ ;
@@ -17,6 +30,9 @@ tě → cɛ ;
 ně → ɲɛ ;
 dž → d \u0361 ʒ;  # affricate indicated by ligature tie
 dz → d \u0361 z;  # affricate indicated by ligature tie
+#
+#
+#
 a → a ;
 á → aː ;
 b → b ;
@@ -61,3 +77,4 @@ y → ɪ ;
 ý → iː ;
 z → z ;
 ž → ʒ ;
+