Svn trunk, soon to become release 1.14, now includes shelving v2 and v3, both opt-in. I’ll update the blog post to mention that. To add v1 as well just needs someone to do the work. It’s not much work now that v2 and v3 are opt-in. Mostly copy-and-paste from the 1.10 code, adjust the storage location to match v2 and v3, and perhaps one or two APIs might need to be resurrected or callers changed to match the current state.