Gnomad allele frequency query

Something along the lines of:

ht.select(
  "locus",
  "alleles",
  gnomad_ac=ht.freq[0].AC,
  gnomad_af=ht.freq[0].AF,
  gnomad_an=ht.freq[0].AN,
  gnomad_homozygote_count=ht.freq[0].homozygote_count,
).export("/path/to/export.tsv")

To include more columns, include expressions for them in the select call.