0.1.1 - 0.1.2
	[delete]
		LINK_NODE macro
	[modify]
		LINK_NODE to link_node
		create id member which have "class",... in struct config(#002)
		observe multiple USB Bus(#004)
	[add]
		function desc2conf which traslate struct usb_device_descriptor
			to struct config
		option -c which is specified configuration file.


0.1.0 - 0.1.1
	[modify]
		To allow 0 as configuration ID.(#009)
	[add]
		To reload configuration file when HUP signal is received.(#008)
		To create pid file which includes pid number.(#005)
		To output messages using syslog(#007)
