We use Git(the stupid content tracker) to manage the code. If you want to contribute the distribution, you should learn to use Git.
We prefer Gitorious because of it is free(free as in freedom).
Gitorious Project Page:
lpms(Our package building and distribution system):
http://gitorious.org/hadron/lpms
Main Package Repository:
http://gitorious.org/hadron/main-repo
Ohloh Pages:
https://www.ohloh.net/p/hadronproject
Playground Repositories:
https://gitorious.org/hadron-playground