Re-added Position and ENUVector structs. These were removed from v2.0.0. While the NMEA 0183 parser and GNSS sensor code will be added in a separate repository, it is still beneficial to have a unified representation of Position and velocity vector data.
LocalDebug wasn't wrapped in the sensesp namespace, which caused it to be displayed separately of the other items in the Doxygen docs.
Minor changes:
LocalDebugwasn't wrapped in thesensespnamespace, which caused it to be displayed separately of the other items in the Doxygen docs.