Fixed string type for 'newline' argument in io.TextIOWrapper since python versions other than 2.7 seem to dislike byte strings there.
Fixed string type for 'newline' argument in io.TextIOWrapper since python versions other than 2.7 seem to dislike byte strings there.

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