BUG FIXES
- o
+ o add.scale.bar() always drew a horizontal bar.
+
+ o zoom() shuffled tips with unrooted trees.
+
+ o write.nexus() failed to write correctly trees with a "TipLabel"
+ attribute.
+
+ o rcoal() failed to compute branch lengths with very large n.
+
+ o A small bug was fixed in compar.cheverud() (thanks to Michael
+ Phelan for the fix).
+
+ o seg.sites() failed when passing a vector.
+
+ o drop.tip() sometimes shuffled tip labels.
+
+ o root() shuffled node labels with 'resolve.root = TRUE'.