Having browsed many of the issues / comments and pull requests on the GitHub repository, I have come to the conclusion that:
(a) Metric_fu has fallen out of "official" support for now
(b) A number of people have small patches / improvements on top of 2.1.1, some private, some in pull requests
(c) A few have spoken up about supporting the official release, but nothing solid has come from it
(all of the above meant as observations only, not criticism !)
My investigations then also led to metrical, but I note this is discontinued too, so didn't go far down that path.
This seems a shame for this useful tool, but equally I might be wrong, so I wanted to post here to see if anyone has a different story on this ? Equally is anyone happy to stand up and say they are in category (c) ?
For now, we are on version 2.0.1, and with a number of upgrade complexities, this appears to be the last "stable" version from our team's view on the world, for now.
Thanks,
Ben