Close button sends client to the tray, statically linked Qt for OSX.
See the Changelog for list of features and fixes currently only available in the nightly builds.
Yeah, I've been missing that one as well :) I'll get it done by next build. Or if you want it ahead of time let me know what platform you're on and I'll set you up with a build.
Nah it's alright. Take your time. :)