+ o The new functions rlineage and rbdtree simulate phylogenies under
+ any user-defined time-dependent speciation-extinction model. They
+ use new continuous time algorithms.
+
+ o The new function drop.fossil removes the extinct species from a
+ phylogeny.
+
+ o The new function MPR does most parsimonious reconstruction of
+ discrete characters.
+
+ o The new function Ftab computes the contingency table of base
+ frequencies from a pair of sequences.
+