I've released blogmore.el v5.3.0. This is a pretty small release but adds a command I realised I'd forgotten to add a couple of releases ago.
Now that BlogMore has the concept of a post series, and now that blogmore.el lets you add and remove a series from a post, it makes sense that I'd want to link to a series in a post from time to time, like I can and do with categories and tags.
So v5.3.0 adds a blogmore-link-series command. It can also be found in the transient menu.