Use df._concat instead of my concat
Use df._concat instead of my concat

_concat is more generic

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