-r for rules: import named file, get functions from it -- DONE
-t for transitions: import named file, control switching regimes
init called for both -r and -t, with unrecognized args between it and next
record db size?

interesting rules:
perfect -- DONE
corrected -- DONE
fpfnunsure -- DONE
fnunsure -- DONE
aging (separate from rules, so can mix it with others?)

interesting transitions:
specific group number
error rate < n
fp rate < n
fn rate < n
unsure rate < n


graphing:
separate files for each graph -- DONE
cumulative vs span totals -- DONE