add etree convenience function
add etree convenience function

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