[libpng16] Bump version to 1.6.0beta18
diff --git a/CHANGES b/CHANGES
index 9719603..ae1d58c 100644
--- a/CHANGES
+++ b/CHANGES
@@ -4049,6 +4049,8 @@
     chunks could end up with a too-small windowBits value in the deflate
     header.
 
+Version 1.6.0beta18 [March 10, 2012]
+
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