Highlight latest message in Log panel

[rgov]

A nice feature is that when I mouse across time-synched charts, they all show a vertical line helping me visually compare the same point in time across panels.

It would be nice to extend this to the Log panel. I'd like it to highlight the log message that arrived most recently to wherever my mouse is pointing. Likewise I'd like to be able to point to a log line and have it show me on the plots what was happening around then.

This would be nicer / more performant than actually having to scrub backwards, and would work better with live data sources.