Update release notes

To be squashed

Author: fredericDelaporte

releasenotes.txt

@@ -3,7 +3,7 @@
 
 Release notes - NHibernate - Version 5.3.0
 
-202 issues were resolved in this release.
+203 issues were resolved in this release.
 
     ##### Possible Breaking Changes #####
         * A distributed cache may hold conflicting timestamps after upgrade for as much as twelve hours.
@@ -131,6 +131,7 @@ Release notes - NHibernate - Version 5.3.0
    * #1195 NH-4078 - LINQ fetched collections aren't cached
    * #981 NH-3873 - Explicit joins on unrelated classes
    * #959 NH-4048 - Support non-deterministic/db-side-only methods in Linq
+   * #896 NH-1432 - Expression.Sql should support aliases other than {alias}
 
 ** Improvement