When calling Coords::setProj(), if only x/y were known, the lat/long were not calculated (but this was done for lat/long known and x/y missing). This has been fixed.

The slope angle normalization between 0-90 degrees has been done.

A merge method has been implemented for Coords and StationData. This simply replaces nodata fields from one object by the matching field from another object (priority given to the current object or the first object in the static method). This is quite a primitive merge strategy, but I doubt anything better could ever be done...