Imports
- github.com/grailbio/base/errors
- github.com/grailbio/base/file
- github.com/grailbio/base/recordio/recordiozstd
- github.com/grailbio/base/traverse
- github.com/grailbio/base/vcontext
- github.com/grailbio/bio/biopb
- github.com/grailbio/bio/encoding/bam
- github.com/grailbio/bio/encoding/pam/fieldio
- github.com/grailbio/bio/encoding/pam/pamutil
- github.com/grailbio/hts/sam
- v.io/x/lib/vlog