libk does not automatically accept new contributors, but if you want to contribute, don't let that get in the way. you can either drop by our public IRC channel and have a chat with the developers to see where you best fit in. once that's established, you'll be set up with an account on the repository, forum privileges, and if appropriate commit access. if you prefer to have that conversation one on one or just can't deal with groups, you can also email the maintainer and get involved privately; check her entry on the personnel page for contact details.
if you want to submit a bug fix, change, or other one-time contribution without getting involved in the project outrght, that's totally okay - just open a ticket and we'll be in touch.