Fixed the computation of the AVL invariant so it checks against the balanceTolerance constant. Fixed a couple of comparisons within AvlTree.Balance so they're correct.
Fixed the computation of the AVL invariant so it checks against the balanceTolerance constant.
Fixed a couple of comparisons within AvlTree.Balance so they're correct.

jack-pappas/facio,emavchun/facio,YaccConstructor/facio,YaccConstructor/facio,emavchun/facio