Comments, wrap inline code

[andrewbaxter]

Since I don't know anything about the syntax, I thought this would be dangerous, but I'm not sure now.

I think breaking inline-code at whitespace may be a reasonable heuristic, the implication of inline code is that it's logically a single line, so introducing breaks shouldn't be particularly confusing.

With the current markdown layout method, breaking and wrapping as a unit are mutually exclusive, so doing this would make it break the text even when it could be moved to the next line with no breaks. I feel like keeping it un-broken is best, but maybe that's wrong.