Re-order Row __init__ for better user exception messages
Re-order Row __init__ for better user exception messages

mhvk/astropy,dhomeier/astropy,bsipocz/astropy,bsipocz/astropy,dhomeier/astropy,astropy/astropy,aleksandr-bakanov/astropy,StuartLittlefair/astropy,MSeifert04/astropy,MSeifert04/astropy,aleksandr-bakanov/astropy,lpsinger/astropy,larrybradley/astropy,saimn/astropy,astropy/astropy,saimn/astropy,StuartLittlefair/astropy,larrybradley/astropy,saimn/astropy,bsipocz/astropy,dhomeier/astropy,MSeifert04/astropy,lpsinger/astropy,pllim/astropy,larrybradley/astropy,saimn/astropy,pllim/astropy,lpsinger/astropy,pllim/astropy,mhvk/astropy,saimn/astropy,lpsinger/astropy,larrybradley/astropy,mhvk/astropy,stargaser/astropy,aleksandr-bakanov/astropy,dhomeier/astropy,mhvk/astropy,pllim/astropy,astropy/astropy,stargaser/astropy,StuartLittlefair/astropy,mhvk/astropy,larrybradley/astropy,StuartLittlefair/astropy,lpsinger/astropy,bsipocz/astropy,aleksandr-bakanov/astropy,dhomeier/astropy,astropy/astropy,pllim/astropy,MSeifert04/astropy,StuartLittlefair/astropy,stargaser/astropy,stargaser/astropy,astropy/astropy