extend to_textfiles test for bz2
extend to_textfiles test for bz2

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