Consider using Geodesy.jl for coordinates

[willtebbutt]

This package roles it's own stuff for coordinate systems. However, I believe that Geodesy.jl, which itself depends on CoordinateTransformations.jl, provides a superset of the functionality available here for translating between different coordinate systems.

Might it be a good idea for this package simple to rely on Geodesy for things relating to coordinate systems?

[pszufe]

Hi, I totally agree. If anyone is interested in providing such PR this would be great! I remember looking at Geodesy.jl some time ago and some functionality was missing there but if someone decides to do the cleanup I am glad to help.