Hi Ian, I think you're doing an amazing job, but basically by yourself if the GitHub graphs are any indication [1]. It helps to have a group of people with differing experiences and perspectives when designing an API, and of course more people to do the heavy lifting as well. If docs aren't your thing, then there should be someone to review and write the docs. Since jqMobi has diverged from jQuery, that makes docs even more important because the name implies to people that it works like jQuery.
As far as the attr/prop thing goes, we changed it a couple of years ago in jQuery 1.6 and deprecated the old behavior, but there is still a lot of code out there that does the wrong thing. That's why 1.9 was such a code breaker for a lot of people.
[1] https://github.com/01org/appframework/contributors