Figure out Merge Rules

[j23414]

Context

Stubbing this out as a GitHub issue. We'll need to discuss some merging rules for public and external datasets.

Description

Make design decisions and write code for:

https://github.com/nextstrain/ebola/blob/ingest_s/Snakefile#L35-L48

Examples

Possible solution

• https://github.com/nextstrain/ebola/tree/ingest_s/ingest#adding-new-sequences-not-from-genbank

• https://raw.githubusercontent.com/nextstrain/dengue/experimental/uniqmerge/ingest/bin/uniq_merge.py

  python uniq_merge.py \
    --cache metadata_all.tsv \
    --new external_metadata.tsv \
    --outfile merged_metadata.tsv \
    --grouby_col accession