Can anyone tell me if Courier 3.1.7 is compatibile with Umbraco 7.15.5?

It was working with version 7.12.3 but after we upgraded to 7.15.5 it still shows as being an installed package but it's no longer an option when you click on a page.

I've just seen on the Courier download page that it lists as 0% compatibile for 7.15.5 (so I guess I might have answerred my own question) but it would just be good to have this confirmed.

I did notice that there is a hot fix for Courier 3.1.8 and it lists as being applicable for 7.15.x so I'm wondering if there is a working version of Courier for the latest Umbraco 7?

Thanks