This is a proposal to
- retag cs.ds.data-structures as ds.data-structures-algorithms
- rename algorithms as a tag synonym of ds.data-structures-algorithms
as an aside, maybe this should be the template for future retagging requests.
Update: Two tag synonyms have been created: ds.data-structures $\leftarrow$ cs.ds.data-structures, and ds.algorithms $\leftarrow$ algorithms. Nothing has been merged YET, but that can also be done to rewrite history entirely.