0.03 - Fri Apr 11 14:30:00 JST 2008
	- declare dependency against Class::Accessor::Fast

0.02 - Mon Apr 07 00:00:00 JST 2008
	- only delay respawning a new worker process if prev. exited abnormally

0.01 - Fri Apr 04 00:00:00 JST 2008
	- initial release