add a description about \y and \Y

diff --git a/README.md b/README.md
index 4ac91bca12f682945c18a7b0ac16f60270b6b586..cec6e6e5d85965afdb33f3a28d742bceee78a347 100644 (file)
--- a/README.md
+++ b/README.md
@@ -30,6 +30,7 @@ New feature of version 6.6.0
 --------------------------
 
 * NEW: ASCII only mode options for character type/property (?WDSP)
+* NEW: \y, \Y  Extended Grapheme Cluster boundary (*original)
 * Absent-clear operator restores previous range in backtrack.