[steveklabnik]

Stylo is the biggest and most significant thing; there are some smaller bits (a media parser, and something else?) included before 57.

[Manishearth]

I'd say the change of the encoding stack to encoding-rs is pretty significant; while it's not that much code it's stuff that gets used throughout the codebase.

[steveklabnik]

That's fair, and you know the impact better than I!