NEW FEATURES
+ The new function chronos ..........
+
o The new function 'where' searches patterns in DNA sequences.
o pic() gains an option 'rescaled.tree = FALSE' to return the tree
o base.freq() is now faster with lists.
+ as.matrix.DNAbin() ............ should be faster.... now accepts vectors,
+
+ read.dna() has a new for FASTA files............. faster C code.
+
CHANGES IN APE VERSION 3.0-6