[tomheon]

It's tricky to figure out where replies should go, especially if, e.g., there's multiple comments from different sources on the same line.

There's also the whole "what if there are comments from multiple authors to write back" problem, since you're presumably only going to have access to the API on behalf of one user.

I came away from the time I spent looking at this thinking that you'd probably be better off implementing a separate mode that talked more or less synchronously to GH as you replied etc., rather than working on an import / export cycle.

But there might be a better way.