add IndexCallable
add IndexCallable

cowlicks/datashape,cowlicks/datashape,cpcloud/datashape,cpcloud/datashape,ContinuumIO/datashape,aterrel/datashape,aterrel/datashape,llllllllll/datashape,quantopian/datashape,ContinuumIO/datashape,llllllllll/datashape,quantopian/datashape,blaze/datashape,blaze/datashape