I've been putting in a lot of time into MochiKit lately getting it ready for this release: 1.0 [download]. This version number carries a certain connotation, but honestly MochiKit's first release was beyond 1.0 quality compared to the rest of what's out there in this space. It's stable, and we just tagged the latest MochiBot release with what's currently in there (which was a couple checkins before 1.0).
