add future warning to dask.distributed
add future warning to dask.distributed

blaze/dask,mrocklin/dask,jcrist/dask,vikhyat/dask,gameduell/dask,mraspaud/dask,ContinuumIO/dask,mikegraham/dask,pombredanne/dask,chrisbarber/dask,pombredanne/dask,jakirkham/dask,mraspaud/dask,ContinuumIO/dask,cpcloud/dask,mrocklin/dask,blaze/dask,vikhyat/dask,dask/dask,cowlicks/dask,jcrist/dask,dask/dask,jakirkham/dask