Working heap class; init for quicksort and testing;

broken heap sort example;

heap sort run time vs. mergesort runtimes;

ironing out `inheritance`/data-ponter bug;

Time change;

Init for test files of the day;

Printable compilation of all questions and glossary;

init for completed files except for LargestProduct.py;

A quick attempt at knights tour DFS through matrix;

matrix_dfs.py init;

Init commit for further interview questions and AVL trees;

Move avl thoughts to avl.txt; More code that needs testing;

Some AVL and big-o improvement;

Working on AVL trees for chapter4;

Complete 4.q1; init 4.q2; graph.py is incomplete;