updated test_biweight_midcovariance()
updated test_biweight_midcovariance()

dhomeier/astropy,lpsinger/astropy,StuartLittlefair/astropy,pllim/astropy,mhvk/astropy,AustereCuriosity/astropy,AustereCuriosity/astropy,MSeifert04/astropy,aleksandr-bakanov/astropy,funbaker/astropy,StuartLittlefair/astropy,AustereCuriosity/astropy,dhomeier/astropy,dhomeier/astropy,stargaser/astropy,funbaker/astropy,saimn/astropy,tbabej/astropy,aleksandr-bakanov/astropy,pllim/astropy,stargaser/astropy,mhvk/astropy,kelle/astropy,pllim/astropy,kelle/astropy,AustereCuriosity/astropy,tbabej/astropy,pllim/astropy,funbaker/astropy,dhomeier/astropy,mhvk/astropy,saimn/astropy,DougBurke/astropy,aleksandr-bakanov/astropy,kelle/astropy,larrybradley/astropy,tbabej/astropy,lpsinger/astropy,kelle/astropy,larrybradley/astropy,astropy/astropy,lpsinger/astropy,StuartLittlefair/astropy,joergdietrich/astropy,joergdietrich/astropy,saimn/astropy,DougBurke/astropy,MSeifert04/astropy,larrybradley/astropy,stargaser/astropy,DougBurke/astropy,MSeifert04/astropy,astropy/astropy,bsipocz/astropy,AustereCuriosity/astropy,joergdietrich/astropy,lpsinger/astropy,bsipocz/astropy,larrybradley/astropy,DougBurke/astropy,astropy/astropy,saimn/astropy,aleksandr-bakanov/astropy,kelle/astropy,StuartLittlefair/astropy,stargaser/astropy,joergdietrich/astropy,mhvk/astropy,astropy/astropy,dhomeier/astropy,joergdietrich/astropy,MSeifert04/astropy,StuartLittlefair/astropy,funbaker/astropy,tbabej/astropy,astropy/astropy,bsipocz/astropy,mhvk/astropy,lpsinger/astropy,bsipocz/astropy,tbabej/astropy,saimn/astropy,pllim/astropy,larrybradley/astropy