Trelby is collaboratively developed free software, and we welcome your participation!
All discussions happen on our mailing list: http://groups.google.com/group/trelby. Before starting a discussion, please be sure to check the FAQ page first to be sure you're not about to raise a topic discussed many times before. Pick one of the issues from our issues list, or scratch your own itch!
For technical details on how to access the source code and contribute changes, see the relevant wiki page.