I have no idea what I'm doing when it comes to Emacs, so my contribution to the DCD integration consisted almost entirely of clicking the button to merge pull requests.

Atila Neves has offered to take over maintenance of this project. It can be obtained via Github or MELPA here:

https://github.com/atilaneves/ac-dcd
http://melpa-stable.milkbox.net/#/ac-dcd
http://melpa.milkbox.net/#/ac-dcd