journal_year_matrix --working version
journal_year_matrix --working version

also of: term_year_journal_matrix

removed sampling_state_nodisk: hopeless. moved sampling_state(), which
is hardly less useless, to a more logical place in the file.

agoldst/dfrtopics,agoldst/dfr-analysis,joncgoodwin/dfrtopics,agoldst/dfr-analysis,agoldst/dfr-analysis,agoldst/dfrtopics,agoldst/dfrtopics,agoldst/dfrtopics,agoldst/dfrtopics,joncgoodwin/dfrtopics,agoldst/dfr-analysis,joncgoodwin/dfrtopics