adding tree diagrams to test to visualize
added self balancing test
added init to recognize package
adding input for balance function
fixed balance factor to be based off tree depth
balance factor tested
added rotate left and right functions, not tested
balance on insert passes
added more insertion tests
cleaned up delete, now need to rebalance
tested rebalance if no children
tested rebalance with one child
added deletion with two children
removed prints
fixed whitespace
Merge branch 'master' of https://github.com/miracode/data-structures