C++ headers: made mapper::Slot mapper_slot() operator public; made Slot.direction() getter const; added missing Device function set_map_callback().
C++ headers: made mapper::Slot mapper_slot() operator public; made Slot.direction() getter const; added missing Device function set_map_callback().

malloch/libmapper,johnty/libmapper,libmapper/libmapper,johnty/libmapper,malloch/libmapper,libmapper/libmapper,radarsat1/libmapper,libmapper/libmapper,malloch/libmapper,libmapper/libmapper,radarsat1/libmapper,radarsat1/libmapper,malloch/libmapper,malloch/libmapper,radarsat1/libmapper,johnty/libmapper,johnty/libmapper,libmapper/libmapper,johnty/libmapper,libmapper/libmapper,malloch/libmapper,radarsat1/libmapper