simplify version checking
simplify version checking

geopython/pycsw,tomkralidis/pycsw,benhowell/pycsw,kalxas/pycsw,bukun/pycsw,tomkralidis/pycsw,bukun/pycsw,benhowell/pycsw,geopython/pycsw,kalxas/pycsw,ingenieroariel/pycsw,ricardogsilva/pycsw,bukun/pycsw,ingenieroariel/pycsw,geopython/pycsw,ricardogsilva/pycsw,tomkralidis/pycsw,kalxas/pycsw,ricardogsilva/pycsw,ocefpaf/pycsw,ocefpaf/pycsw,mwengren/pycsw,mwengren/pycsw