Add support for italics

[sts10]

It'd be nice if Pink Moon utilized italics for fonts that support it (one example is Victor Mono). I don't know how to do this!

My best guess

maybe put "italic" in one of these parameters? Guessing the third parameter, like this: call <sid>hi("Italic", "italic", "", "", "", "none")

or call <sid>hi("Italic", "", "italic", "", "", "none")

and then

call <sid>hi("Boolean",      s:teal, "italic", s:cterm09, "", "")
call <sid>hi("Conditional",  s:teal, "italic", s:cterm0E, "", "")

Here's a Stack Overflow answer that might help?