fix parallel build to quit each worker after batch is complete, since find_in_batches() has only a :start and no :end
fix parallel build to quit each worker after batch is complete, since find_in_batches() has only a :start and no :end

quoideneuf/pop-up-archive,quoideneuf/pop-up-archive,quoideneuf/pop-up-archive,quoideneuf/pop-up-archive