Add decompression for gzipped stuff.
Add decompression for gzipped stuff.

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