Partial implementation of https://github.com/chrisveness/geodesy
Project is started from a requirement of true calculation of distance between two geo coordinates, in degrees. Starting from distance calculations, it will evolve.
.Net Framework 4.5.2 (soon .Net Standard 1.2)
During the research, a valuable resource I met, Calculate distance, bearing and more between Latitude/Longitude points was the starting point. The original javascript library can be found in github perository geodesy. Many thanks to Chris Veness.