armem robot mapping: performance improvements: laser scans are now ndarrays

...otAPI/libraries/armem_robot_mapping/MappingDataReader.cpp

...obotAPI/libraries/armem_robot_mapping/MappingDataReader.h

...otAPI/libraries/armem_robot_mapping/MappingDataWriter.cpp

...RobotAPI/libraries/armem_robot_mapping/aron/LaserScan.xml

...botAPI/libraries/armem_robot_mapping/aron_conversions.cpp

...RobotAPI/libraries/armem_robot_mapping/aron_conversions.h

source/RobotAPI/libraries/armem_robot_mapping/types.h