Better indication of new replies

[NiXXeD]

Currently as new replies come in, the only indication that they are new is the "oneline" highlight which makes the most recent 9 replies "more white" color font. This isn't enough to keep track of fast moving threads or infrequent visits.

Ideally this would involve a colored highlight near the oneline reply text. Keeping track of replies between visits (local storage?) would also be a plus. This feature should likely replace the current line highlight directive.