+ process when alpha = 0 to avoid division by zero. The option
+ 'linear' has been removed.
+
+ o Cross-validation in chronopl() did not work when 'age.max' was
+ used.
+
+ o consensus(, p = 0.5) could return an incorrect tree if some
+ incompatible splits occur in 50% of the trees (especially with
+ small number of trees).
+
+ o c() with "multiPhylo" did not work correctly.