2. Plugin can now be renamed.
3. Socket failed to connect message log as warning the first time.
4. Correctly retrieve the port for a remote connection.
5. Log negative user id number as [unknown] .
* Fix 'uninstall plugin' to work on MySQL 5.7.
* Add ability to send rows affected by each command, includes new
'audit_before_after' configuration variable.
* More offsets for more released versions.