Updating this back to "Planned" as all development work has been paused in order to resolve other critical and outstanding technical issues.

I will resume development of this in the near future. Thanks for your understanding! 🙇🏻‍♂️

Given the relationship between this time signature and 6/8 and 12/8, I've decided that all of these should be implemented together as opposed to separately. It's going to take some time to iron out the complexities here, and I appreciate your support and patience while I work through these challenges!

Planned for a future 3.x release.