* 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.
Add support for MariaDB 10.1.{10,11}.
Fix segfault for set var to null (issue 133).
If password masking regex doesn't compile, revert to default regex.