Please Support HTML Comments

[kat-co]

It would be nice if I could do something like this:

(:comment "For old IE compatibility")
(:comment "[if lt IE 9]>" (:script :src "foo.js") "<![endif]")`

And when using one of the HTML renderers have it rendered as:

<!-- For old IE compatibility -->
<!-- [if lt IE 9]> <script src="foo.js" /> <![endif]-->

You can probably come up with syntax that makes more sense within the context of cl-markup, but this is the general idea.

Thank you very much for creating and supporting this project.