removing block that does not happen any more, now that streamcorpus.*
is not a namespace package
updating naming in Makefile
enabling .xz string removal for input_fname
creating a function that can be called by a rejester config and
enabling chunks to have more than one source string if a flag is set
in the config running the pipeline
adding StreamItem.external_ids entry for the kba-2013 stream_ids, when
they change in going to v0_3_0
starting tests for running streamcorpus_pipeline via rejester