message: Change the list of Heap node field back to private according to TODO
diff: @@ -48,8 +48,7 @@ export interface IHeapNode<T> {
  * Ordered Heap data structure implementation
  */
  export class Heap<T> {
  - // TODO temporarily public while validating bug fix. Make private once fixed.
  - public L: IHeapNode<T>[];
  + private L: IHeapNode<T>[];
  /**
  * Creates an instance of Heap with comparer
  