Changed cell_faces to faces_at_cell.
Changed cell_faces to faces_at_cell.

amandersillinois/landlab,Carralex/landlab,cmshobe/landlab,Carralex/landlab,RondaStrauch/landlab,SiccarPoint/landlab,csherwood-usgs/landlab,SiccarPoint/landlab,landlab/landlab,landlab/landlab,amandersillinois/landlab,ManuSchmi88/landlab,RondaStrauch/landlab,Carralex/landlab,RondaStrauch/landlab,cmshobe/landlab,ManuSchmi88/landlab,csherwood-usgs/landlab,laijingtao/landlab,cmshobe/landlab,laijingtao/landlab,ManuSchmi88/landlab,landlab/landlab