-M for weighted kmer

[jianshu93]

Dear mash team,

I noticed that the newest commit with the -M option, where kmer multiplicity will be stored in the sketch. My question is will they be used to compute distance because Jaccard distance, estimated by minhash does not take into account multiplicity of each kmer. In dashing2, they have the bagminhash were estimation of weighted Jaccard distance can include multiplicity of each kmer.

Thanks,

Jianshu