Implementaion of multiway tree for the Heirarchy problem

This project is the source code repo for the blog https://thesundayprogrammer.wordpress.com/2019/03/11/multiway-trees/

This is the python version of the C++ code discussed in the blog SortedCollection.py was picked up from https://github.com/activeState/code/recipes/Python/577197_SortedCollection and 'lower_bound' and 'upper_bound' methods were added