Nick Santos (or anyone else), would you be willing to help pull in more recent versions of the Closure Tools and get them to play nice so I can do a release? We'll continue to use the Ant scripts for now, but I do want to move over to Buck (or maintain both so Windows users can still build) because running tests and doing incremental builds is considerably faster.
Also, I have a lot more experience with Java threads than I did four years ago when I started this project, so I suspect there are a ton of things I could clean up and make more efficient (though @nicks recent fixes with the CacheLoader and etags fixes should already be helping).