visualise the age-difference based prior probability ratios
PlotAgePrior(AP = NULL, GPlines = TRUE)matrix with age priors of dimension nAgeclasses rows by 9 columns,
OR a list returned by MakeAgePrior when called with
Return='all', OR a list returned by sequoia containing an
element 'AgePriors'.
show the lines for grandparental & avuncular relationships? Can sometimes make the plot overly crowded.
When called with an output list from MakeAgePrior, the raw
distributions are shown too in a separate panel, in addition to the the
scaled, flattened & smoothened distributions used for pedigree
reconstruction.