Orest,
This list is defunct now that the ruby plugins are part of the jenkins organizations and questions are handled on the main development list.
The project is a bit rudderless right now since I have not been able to dedicate any time to it since May of this year. I do not have a roadmap, nor do I have any plans to do major development any time soon. However, I recently did hand over
control of the rubygems to Hiroshi Shibata
https://twitter.com/hsbt. I think he would be a good resource to contact about your questions.
cheers,
Charles