Other metrics to determine which sequence is recombinant

[ArtPoon]

From Darren:

OpenRDP uses only the vanilla phylpro methods to identify which of the
sequences is the recombinant in a triplet of sequences that yield a
recombinant signal. Is that right (again could not see any code for doing
that the last time I looked)? RDP uses vanilla phylpro together with 17
other metrics (including tree-distance based variations of phylpro) fed
through either a crude human-weighted decision tree or a logistic
regression weighted machine-learned formula to make this decision (this
latter thing was only added recently and may not be in the version you have
on hand).

Since this may be a new feature of RDP, we can prioritize implementing the other two improvements first (e.g., #54 )