prawnsalad/KiwiIRC — pull request #625 by ehues (2014-11-23 06:00:31+00:00)
Title: Last seen line

When the user switches away from the browser flag the last visible message.

Our flag takes the form of a line after the last message. When the user returns, they'll know that all of the messages below the line are new and worth reading. The messages above the line are old and probably less interesting.