load shapely only when triggered by OGC spatial filters
load shapely only when triggered by OGC spatial filters

kevinpdavies/pycsw,kalxas/pycsw,geopython/pycsw,geopython/pycsw,ingenieroariel/pycsw,ingenieroariel/pycsw,kalxas/pycsw,ricardogsilva/pycsw,ricardogsilva/pycsw,ricardogsilva/pycsw,ckan-fcd/pycsw-fcd,kevinpdavies/pycsw,rouault/pycsw,ocefpaf/pycsw,bukun/pycsw,tomkralidis/pycsw,benhowell/pycsw,PublicaMundi/pycsw,kalxas/pycsw,tomkralidis/pycsw,bukun/pycsw,rouault/pycsw,ocefpaf/pycsw,tomkralidis/pycsw,mwengren/pycsw,PublicaMundi/pycsw,mwengren/pycsw,bukun/pycsw,ckan-fcd/pycsw-fcd,geopython/pycsw,benhowell/pycsw