CSharpFingerTree

C# Implementation of Finger Tree.

Based on the work of Dimitre Novatchev here which in turn is based on this research paper.

Planned changes:

1. Update .Net version to 4.6.1 DONE
2. Add project for unit tests DONE
3. Cover existing code with unit tests TODO
4. Switch unit tests to NUnit
5. Add implementation for Interval Tree based on the paper by Ralph Hinze mentioned above.
6. Add implementation for the Quad Tree based on paper http://sarielhp.org/teach/2004/a_aprx/lec/03_quadtree.pdf