Unfortunately the Moodle plugin maintenance process, even though it's been improved, is a bit cumbersome to update properly. It's not actually that difficult but I have precisely zero time allocated to this sort of thing. That's why the latest version of our modules is always on GitHub and never in the Moodle plugin system.
That said I can probably/maybe find time to add the Moodle 2.2 version of ouwiki today or tomorrow or so. (This will be a once-only sort of deal, i.e. I won't ever update the code after putting it there, but hopefully that's enough to get it working with AMOS.) I'll add another comment here when I get around to it, or you can comment here if I forget...
There is no Moodle 2.3 version of any of our modules yet, I expect that may happen some time around September.