_rangemedian: implement weights
_rangemedian: implement weights

airspeed-velocity/asv,qwhelan/asv,airspeed-velocity/asv,airspeed-velocity/asv,qwhelan/asv,airspeed-velocity/asv,qwhelan/asv,spacetelescope/asv,spacetelescope/asv,spacetelescope/asv,qwhelan/asv,spacetelescope/asv