Remove private keyword

[simon-parry]

Removed private keyword

[codecov]

Codecov Report

Merging #196 (a9bbfb1) into master (5a6f50e) will decrease coverage by 2.40%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #196      +/-   ##
==========================================
- Coverage   92.41%   90.00%   -2.41%     
==========================================
  Files          94       74      -20     
  Lines        4297     2431    -1866     
==========================================
- Hits         3971     2188    -1783     
+ Misses        326      243      -83     

Impacted Files	Coverage Δ
...tructures/BinarySearchTree/BinarySearchTreeNode.cs
DataStructures/BitArray.cs
DataStructures/BinaryHeap.cs
DataStructures/MinMaxHeap.cs
...tructures/DoublyLinkedList/DoublyLinkedListNode.cs
DataStructures/Timeline.cs
DataStructures/SegmentTrees/SegmentTreeApply.cs
DataStructures/SegmentTrees/SegmentTreeUpdate.cs
DataStructures/AATree/AATree.cs
DataStructures/AATree/AATreeNode.cs
... and 9 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 5a6f50e...a9bbfb1. Read the comment docs.

[siriak]

This is a violation of the SA1400 rule. From build logs:
SinglyLinkedList/SinglyLinkedList.cs(13,34): error SA1400: Element 'Head' should declare an access modifier