wrong header on relate pairs output

[Filipe G. Vieira]

The pairs output from somalier relate seems to have an extra ibs2 in the header:

#sample_a       sample_b        relatedness     ibs0    ibs2    hom_concordance hets_a  hets_b  shared_hets     hom_alts_a      hom_alts_b
      shared_hom_alts ibs2    n       x_ibs0  x_ibs2  expected_relatedness

and should be:

#sample_a       sample_b        relatedness     ibs0    ibs2    hom_concordance hets_a  hets_b  shared_hets     hom_alts_a      hom_alts_b
      shared_hom_alts    n       x_ibs0  x_ibs2  expected_relatedness

[Brent Pedersen]

thanks for reporting. i just pushed a fix for this and i will get out a release early next week.