add lz4 to conda requirements
add lz4 to conda requirements

dask/distributed,mrocklin/distributed,dask/distributed,broxtronix/distributed,amosonn/distributed,mrocklin/distributed,blaze/distributed,broxtronix/distributed,broxtronix/distributed,dask/distributed,amosonn/distributed,mrocklin/distributed,amosonn/distributed,blaze/distributed,dask/distributed