Just in case anyone is interested, WordPress 3.9 is shaping up and it includes a major update to TinyMCE 4.0 (the editor WP uses).
This is going to break Just Writing very badly 🙁
However it’s nothing that can’t be fixed with some major coding, but I can’t guarantee that Just Writing will be ready by the time WP3.9 is released. I expect to do a 3.0 release of Just Writing when I’ve got it working with WP3.9.
So if you really need Just Writing (and I thank you if you do), I’d suggest holding off on upgrading to WP3.9 until I get Just Writing 3.0 done.