update changelog

h2/src/docsrc/html/changelog.html

@@ -32,6 +32,7 @@ Change Log
 </li><li>Fix for a bug where we would sometimes use the wrong unique constraint to validate foreign key constraints.
 </li><li>Support BOM at the beginning of files for the RUNSCRIPT command
 </li><li>Fix in calling SET @X = IDENTITY() where it would return NULL incorrectly
+</li><li>Fix ABBA deadlock between adding a constraint and the H2-Log-Writer thread.
 </li></ul>
 
 <h2>Version 1.3.169 (2012-09-09)</h2>