Use generalized form of index checking (is_index_like) (#4531)
Use generalized form of index checking (is_index_like) (#4531)


blaze/dask,dask/dask,ContinuumIO/dask,blaze/dask,jcrist/dask,jakirkham/dask,jakirkham/dask,mrocklin/dask,jcrist/dask,ContinuumIO/dask,dask/dask,mrocklin/dask