Byrd IRC client is no longer being activly developed. I have since began work on a new client to replace it, which will be available soon.
The client I'm currently working on, which will be called Burd (with a u) is an open source project that is being designed to be highly portable. This means it can be ported to other platforms like node.js.
I will leave Byrd on the Chrome Web Store, but I do not plan to add any new features. I will fix security issues so if you find any email them to me.
And of course here's a preview of whats to come: