Add protein k-mers with 6-frame translation

[olgabot]

Hello, I've been using protein k-mers from sourmash to compare single-cell RNA-seq profiles across different species. I'm curious to benchmark dashing for this purpose as well. Warmest, Olga

[dnbaker]

It’d be useful and worth consideration. Which encoding scheme(s) to support and doing so efficiently (IE, comparably to our nucleic acid support) wouldn’t necessarily be trivial, but we’ve looked into it and will be considering this enhancement.