First steps toward parallelisation.
Merge.
Add different constant distances depending on method.
Correctly compute genetic distance\!  Previously used bad indices.
Add different constant distances depending on method.
Minor tidy ups.
Removed unused function argument.
Removed superfluos function argument.
Remove all evidence of attempted parallelism in tree generation.
Delete old garbage file.
Made sure Austronesian and Indo-European authoritative trees are both in the repo and given consistent filenames.
Killed old unused function.
Substantial refactorings to facilitate optimisation of distance methods.
Python fu: do not use \'is\' to test for equality.
Many changes!  I think this code is in a fairly final state now.
Generate trees using all methods.
Use .tree extension, not .phylip
Terminate tree age files with a newline.
Code to find optimal values of some distance matrix generating parameters.
Committing what are hopefully the final versions of all generated trees.