Added Root LCA (eg. when mixing Eukaryota and Bacteria)
Added Root LCA (eg. when mixing Eukaryota and Bacteria)

bonsai-team/matam,ppericard/matamog,bonsai-team/matam,bonsai-team/matam,bonsai-team/matam,ppericard/matamog,ppericard/matam,ppericard/matam,ppericard/matamog,ppericard/matam,ppericard/matamog