After several weeks of occasional headaches, and several long nights of more consistent headaches, there is now a very very buggy 1.7.10 build of EBXL 3.16.alpha in testing.
When I say "very very buggy", you probably imagine something that has bugs. Don't. Imagine something with bugs, but those bugs have bugs. And those bugs are on fire.
But it runs and doesn't crash Minecraft any more (that was fun).
The code on github is mostly current. However, I am not going to provide a link to a compiled jar here - you guys don't really want to look yet. But soon, it will get better, and I'll make a more public beta release that people might actually want to play with.
Many thanks to Asie for doing most of the heavy lifting these last few nights to get things running after I burnt out.
To volunteer your own sanity to the cause, stop by our irc channel, #extrabiomes on irc.esper.net. And for those of you who somehow do come into possession of a copy of the 1.7 alpha branch of the mod, please report any issues on Github.