Feature request: Timestamp

Right now shots are saved Screenshot-{yyyy-M-d} {site}.png and two shots of the same site also have the exact same name.
I’d like to know date and time of the shot like Screenshot-{yyyy-MM-dd-HHmmss} {site}.png and have it displayed on the page. This is particularly helpful when showing how something changed over time.

I would like to see this implemented too.