Our main reason for moving to GitHub (besides moving to git as a tool) was to make it easier for people to contribute. And that's exactly what happened! We hadn't even figured out how to properly work with pull requests and the famous git cheap branches and there was our first pull request from an external contributor!
I also extracted the deegree maven plugin into a separate repository. Have a look at the documentation I added in its wiki.
We decided to (gradually) move all developer related documentation to the wiki of the deegree webservices code base, so that should be the primary source of information for now. Links to the old wiki were added where appropriate.
So I hope to see more of those pull requests coming!
In a related note, on Friday (the 18th of January) I'll move some more deegree related projects like the old deegree 2 code base to GitHub as well, and then the svn repository will be shut down/made read only. In case some old project picks up again, I offer to migrate any of the old projects to GitHub, but for building the unchanged code base, the read-only svn should be good enough.