One of my co-workers submitted the nested groups issue to github, so I'll definitely look into that one. I'm also going to look into the RFC822 one as well (ev

One of my co-workers submitted the nested groups issue to github, so I'll definitely look into that one. I'm also going to look into the RFC822 one as well (even though rendering something that size isn't really a goal). I suspect I might not be handling massive inputs sufficiently and want to make sure to address that. You're probably lucky it didn't render though...that SVG would be non-trivial...