The documentation and examples have been updated to reflect the latest changes in MeteoIO (namely: the merging of MeteoData with StationData). A documentation bug has been fixed, that involved deleting the doxygen comments for the commented "clone()" method in IOInterface. Since this is not used anywhere and has been commented out for a while, this method has been fully deleted.

Meteo2DInterpolator now has its own << operator for debugging purposes.