HkCoordinate bundles the following third-party software:

GeographicLib 2.7.0
Copyright (c) Charles Karney
License: MIT
Project: https://github.com/geographiclib/geographiclib
Documentation: https://geographiclib.sourceforge.io/C++/doc

The full GeographicLib license text is included in ThirdParty/GeographicLib/LICENSE.txt.

Bundled gravity and geoid model data
Files in Content/gravity and Content/geoids are EGM84, EGM96, and EGM2008 model
datasets used by GeographicLib. The model families are published by the U.S.
National Geospatial-Intelligence Agency (NGA).
GeographicLib geoid docs: https://geographiclib.sourceforge.io/C++/doc/geoid.html#geoidinst
GeographicLib gravity docs: https://geographiclib.sourceforge.io/C++/doc/gravity.html#gravityinst
NGA EGM2008 reference: https://earth-info.nga.mil/GandG/wgs84/gravitymod/egm2008
