Yeah, I went and read some stuff on Wikipedia about it after posting. Apparently Composer is considered unsupported now and only gets occasional updates because

Yeah, I went and read some stuff on Wikipedia about it after posting. Apparently Composer is considered unsupported now and only gets occasional updates because it's used as the underlying html editor in Mail. And yes, I was mildly disappointed when I downloaded and ran this as I saw no real visual difference or changes to the UI and preferences. So I guess Composer is not much of an option for "real" work these days. Still cool to see an alternative browser out there that's at least mostly capable of handling the "modern" web...