pango_recombinant_lineages_report is misleading

[jeromekelleher]

The pango_recombinant_lineages_report function doesn't give very meaningful results because it just chooses the first sample as representative, assuming that it's the earliest and therefore the "causal". The picture is much more complex in reality, with multiple origins and shared recombinants across the lineages.

The function should be rewritten to try and summarise this information.

sc2ts/sc2ts/utils.py

Line 728 in 265de6c

def pango_recombinant_lineages_report(self):