Changing projection library
Diana version 3.15
Diana version 3.20
Coordinates changed from grid (0:nx, 0:ny) to proj-coordinates
Grid resolution moved from class Projection to class Field
Transformations to/from lat/lon-values must be done using Projection::convertToGeographic() and Projection::convertFromGeographic()
Some classes still use grid-coordinates to some degree (TrajectoryPlot, FieldEdit)
Todo
Use Field::gridResolutionX/Y, not Projection::getGridResolutionX/Y()
Add gridResolutionX/Y to class Sat
Remove Projection::getGridResolutionX/Y()
Change Field::interpolate(), should use proj coordinates