CHANGELOG

2010/11/18
added GUIEditor
	Monotonic-tree GUI editor.

modified Editor API
	bug fix (not done yet , still buggy)

2010/11/17
modified Node API
	delete setLinkedNode,getLinkedNode

added Link API
	setNode,getNode
	
added SimpleLink and deleted SimpleLinkedNode
	Test code is SimpleLinkTest2

added document/figure/linkednode1.graffle

2010/11/10
added Node API
	setLinkedNode,getLinkedNode for create link to other node.
	but not implemented yet.
	
added SimpleLinkedNode
	proxy based link implementaion. (not done yet)
	
added PreOrderLinkTreeWalker
	tree walker for linked node.
	
added PreOrderLinkTreeWalkerTest
	tests for PreOrderLinkTreeWalker
	
modified SimpleNode
	thread safe support (not done yet)

2010/11/09
added CHANGELOG
added Editor API
	merge,update,discard,checkUpdate