+ o The new function stree generates trees with regular shapes.
+
+ o drop.tip(), extract.clade(), and root() now have an 'interactive'
+ option to make the operation on a plotted tree.
+
+
+BUG FIXES
+
+ o rTraitDisc() did not use its 'freq' argument correctly (it was
+ multiplied with the rate matrix column-wise instead of row-wise).
+
+ o [node|tip|edge]labels(thermo = ) used to draw empty thermometers
+ with NA values. Nothing is drawn now like with 'text' or 'pch'.
+ The same bug occurred with the 'pie' option.
+
+
+
+ CHANGES IN APE VERSION 2.5
+
+
+NEW FEATURES
+
+ o The new function parafit by Pierre Legendre tests for the
+ coevolution between hosts and parasites. It has a companion
+ function, pcoa, that does principal coordinate decomposition.
+ The latter has a biplot method.
+
+ o The new function lmorigin by Pierre Legendre performs multiple
+ regression through the origin with testing by permutation.
+