update README.md

kkos · Jul 3, 2017 · 3d75358 · 3d75358
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@@ -20,6 +20,14 @@ Supported character encodings:
 * CP1251: contributed by Byte
 
 
+New feature of version 6.4.0
+--------------------------
+
+* Fix fatal problem of endless repeat on Windows
+* NEW: call zero (call the total regexp)
+* NEW: relative backref and relative call by positive number
+
+
 New feature of version 6.3.0
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