changes to tree.py
changes to tree.py

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