1.7.10 downloads are available on curseforge (as well as github for the last few releases). There's a curseforge wiget in the first post of this thread I believe, but there may be a few other broken links in that post. I'm planning on re-writing it soon, as it hasn't really been updated since the 1.6.4 versions.
There's no longer an official wiki, instead there's an official manual which can be found here:
The new features introduced in 184.108.40.206 aren't documented in the manual yet, but there's informal documentation here: