add dimension_not_found exception
add dimension_not_found exception

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