PyCogent

Many thanks to all the contributors for the new features, bug-fixes and performance enhancements. Major additions to the documentation too! As usual, check the ChangeLog for a summary what has gone into this point release. Of particular note are: the inclusion of some parsers for handling next-generatiuon sequencing data; progress display code employed by the cogent.evolve module; and some enhancements to the Ensembl querying code.