Perhaps predictably, I’m making further progress. To see: http://codereview.musicbrainz.org/r/1295/ is pretty up to date. I’ve added some hover functionality, improved the ticks on the graph, improved the controls for zooming, added controls for adding and removing lines from the graph, and some other random trivialities.

Or, if you don’t want to go over to Review Board for yourself:

This thing’s getting close to something that might actually be useful!

Now I just get to wait for my mentor to review and merge my code. Wonder if there are any low-hanging bugs I can tackle in the mean time…