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Merge branch 'master' of https://github.com/AmitMarcus/WAVL
added to Node IsLeftSon, IsRightSon, and to tree predecessor and successor
Added some todo memos.
implemented rotateLeft and RotateRight
Merge branch 'master' of https://github.com/AmitMarcus/WAVL

Conflicts:
	src/WAVLTree.java