Fixes for New Lab 5#52

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zsd4yr wants to merge 5 commits intomarkfloryan:masterfrom

Commits on Mar 1, 2018

rewrite of remove in AVLTree.cpp to fix memory leak, separation of headers to separate files, writting of node classes to avoid extraneous work
Zachary Danz
committed
minor fixes to binary node h and cpp, including ='s override
Zachary Danz
committed
changes to index md and code zip to reflect updates
Zachary Danz
committed

Commits on Mar 12, 2018

changes to remove so that balance works as expected, change comment for balance, added pretty postorder print to binarysearchtree and avltree, added binarysearchtree.cpp, default returns to all met…
Zachary Danz
committed
left behind change to md
Zachary Danz
committed