Allow grid fields to be scalar or array.
Allow grid fields to be scalar or array.

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