- Added parent attribute to node
- Added get_parent/1 and set_parent/2
- Improved tree traversal methods
- Added reducer function
- Renamed build_tree/2 to from_list/2
- Added empty sub trees feature for from_list/2
- Added count_children/1
- Updated bfs traversal for nary tree
- create tree
- build binary tree from datalist
- insert child
- dfs inorder, preorder, postorder traversals
- bfs traversal