plot_compare: Plot Network Difference (alias of plot_difference)
Description
plot_compare() is an alias of plot_difference(). It is
not deprecated: tna::plot_compare() delegates to it by name
(cograph::plot_compare(x, y, ...)), so the alias is part of the
tna integration and must keep working. New cograph code may prefer the
plot_difference() name; both call the same implementation.