Department of Computer Science, University of Auckland, Auckland, New Zealand, Allan Wilson Centre for Molecular Ecology and Evolution, Massey University, Palmerston North, New Zealand.|Department of Computer Science, University of Auckland, Auckland, New Zealand.|Department of Biosystems Science and Engineering, ETH Zürich, Switzerland.|Department of Computer Science, University of Auckland, Auckland, New Zealand, Allan Wilson Centre for Molecular Ecology and Evolution, Massey University, Palmerston North, New Zealand.