revamp si module to load from version modules
revamp si module to load from version modules

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