Currently there's not really a development team as such. At one point there was a private group solely responsible for the design, direction, and construction of the game, but now the core game is more or less finished and the continued development is more community based. Anybody can work on something and have it potentially included with an official release, and the features focused on are directed by community vote. I can certainly add a "Developer" tag to their forum accounts, but there is no longer a private developer forum, so it would just be for show.
I suppose we could try to put a more structured development team together, but I don't want to force people into doing more work than they find enjoyable. I don't want people to get burned out.