1.03 2021-01-12
	- Change bugtracker address.
1.02 2019-08-25
	- Make sure constructor never croaks if on_error is set to 'return'
	  Improve diagnostics.
1.01 2018-07-17
	- Prefer apachectl over invoking httpd directly.
1.00 2018-02-24
	- Initial release.
