+ CHANGES IN APE VERSION 2.3-3
+
+
+BUG FIXES
+
+ o add.scale.bar() always drew a horizontal bar.
+
+ o zoom() shuffled tips with unrooted trees.
+
+
+
CHANGES IN APE VERSION 2.3-2
"pruningwise" order.
o nj() did not handle correctly distance matrices with many 0's.
+ The code has also been significantly improved: 7, 70, 160 times
+ faster with n = 100, 500, 1000, respectively.