Version 0.9 was the first public release of GRAPPA.
Version 1.0 improved input data handling, allowing, for instance,
  the use of taxon names with spaces in them.
Version 1.01 corrected an error in the constraint tree generation
  and improved the behavior of I/O under Windows.
Version 1.02 corrected the Nexus format printing of trees to use the
  proper distance method.  Also improved error messages for reading
  the input file.
Version 1.03 corrected the computation of breakpoint distance for
  linear genomes (previous versions did not count the two endpoints)
  and fixed an obscure bug in constraint tree generation.
