added jackknife resampling
added jackknife resampling

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