'plot.assess()' DID=“many” time 1 is no longer the intercept and 2) ITS=“two” intercept is now correct.
'plot.assess()' ITS=“two” intercept is now correct.
'plot.assess()' has added graphing options, arrows, coefficient names/values.
'group()' added and provides confidence intervals, over time periods.
'plot.group()' produces a graph of the group() results.