I didn't say it wasn't a major release. As I understand it, pipeline aggregations aren't strictly necessary -- you could do it client-side, so it's more of a c

I didn't say it wasn't a major release. As I understand it, pipeline aggregations aren't strictly necessary -- you could do it client-side, so it's more of a convenience and optimization. Doc values are another optimization. This release is full of optimizations, cleanups and various low-visibility stuff of this kind. Few actual new features.