TST: Travis build matrix to specify numpy/pandas ver (#1300)
TST: Travis build matrix to specify numpy/pandas ver (#1300)


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