Status of SMW timeline project
I got your email a week or so ago, and I am interested in assisting with improvement of this extension. Unfortunately I have way too much on my plate right now, so it'll probably be at least a couple months. Also, SMW 1.9 is going to be released soon (~Dec 2013), and with that I believe there are some changes to Semantic Results Formats.
Thanks James. I'm plodding on with easy changes (removal of double dates in the bubbles is done). I'll post about progress on the Sandbox site and here if it seems appropriate. From other email exchanges I've had, I think it unlikely that there will be significant - if any - changes to the timeline format in the 1.9 release, but then it is just one of about 30 others :-)
A good alternative is this new timeline format: https://www.mediawiki.org/wiki/Extension:ChapTimeline
Thanks Jeroen. I've had a few email exchanges with Yuri on this and still not managed to get it working. It would help my confidence to see it working on a wiki somewhere. I've offered my own Sandbox site but no takers yet. My provisional judgement is that it has great potential but is currently in a state somewhere between raw and totally unusable on a production site.