This week, the prize goes to Kris.
In Gossip we have been trying to get a flat look but with the expander enabled. This isn’t possible, even with GTK+ 2.10. So after speaking to Kris about it, he said the best way would be an Expander cell renderer. Kris also took the time today to actually write it for us.
So thanks Kris, great work, it looks superb!