forward getNumPoints() from previous stage for filters.chipper
forward getNumPoints() from previous stage for filters.chipper

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