Add a ChangeLog entry for #352

Signed-off-by: William Desportes <williamdes@wdes.fr>

Author: williamdes

CHANGELOG.md

@@ -15,6 +15,7 @@
 * Added support for KEY order (ASC/DESC) (#296)
 * Added missing KEY options for MySQL and MariaDB (#348)
 * Added support for ENFORCED and NOT ENFORCED on table create queries (#341)
+* Performance improvement to use less the "ord()" function (#352)
 
 ## [5.4.2] - 2021-02-05