Lighttpd

I can see the code for mod_uploadprogress in both github and the subversion repositories.
However, it is still not integrated and distributed in the official releases.
And a stranger thing is that mod_uploadprogress.c disappears from the release tarball even though it is in both repositories.
Even building from github/subversion won't build a mod_uploadprogress.so.
And with the changes introduced in 1.4.36, mod_uploadprogress doesn't even compile anymore.

A few questions:
1. Which one is the official repository? And why more than one?
2. How does mod_uploadprogress.c disappears when making the release?
3. Why isn't mod_uploadprogress integrated yet?

Thanks.