use a shared_ptr to keep track of DimensionMap stuff
use a shared_ptr to keep track of DimensionMap stuff

radiantbluetechnologies/PDAL,mtCarto/PDAL,jwomeara/PDAL,lucadelu/PDAL,DougFirErickson/PDAL,verma/PDAL,Sciumo/PDAL,verma/PDAL,mpgerlek/PDAL-old,lucadelu/PDAL,mtCarto/PDAL,boundlessgeo/PDAL,DougFirErickson/PDAL,boundlessgeo/PDAL,mtCarto/PDAL,Sciumo/PDAL,Sciumo/PDAL,radiantbluetechnologies/PDAL,jwomeara/PDAL,mpgerlek/PDAL-old,Sciumo/PDAL,radiantbluetechnologies/PDAL,verma/PDAL,jwomeara/PDAL,lucadelu/PDAL,verma/PDAL,radiantbluetechnologies/PDAL,verma/PDAL,DougFirErickson/PDAL,jwomeara/PDAL,verma/PDAL,verma/PDAL,mpgerlek/PDAL-old,DougFirErickson/PDAL,boundlessgeo/PDAL,mtCarto/PDAL,mpgerlek/PDAL-old,boundlessgeo/PDAL,lucadelu/PDAL