percentiles more robust to list/iterator inputs
percentiles more robust to list/iterator inputs

mrocklin/dask,pombredanne/dask,simudream/dask,mraspaud/dask,blaze/dask,cpcloud/dask,ssanderson/dask,ContinuumIO/dask,mrocklin/dask,marianotepper/dask,dask/dask,freeman-lab/dask,jcrist/dask,cowlicks/dask,vikhyat/dask,ssanderson/dask,blaze/dask,chrisbarber/dask,jakirkham/dask,simudream/dask,ContinuumIO/dask,esc/dask,minrk/dask,vikhyat/dask,marianotepper/dask,clarkfitzg/dask,PhE/dask,jayhetee/dask,minrk/dask,hainm/dask,pombredanne/dask,jakirkham/dask,mikegraham/dask,freeman-lab/dask,hainm/dask,esc/dask,mraspaud/dask,wiso/dask,dask/dask,PhE/dask,jcrist/dask,jayhetee/dask,gameduell/dask,clarkfitzg/dask,wiso/dask