Thank you for your awesome work. This release is very promising.
But it hasn't at least two important commands.
Yarn v1:
yarn outdated - show list outdated packages versions.
yarn upgrade - upgrade all minor versions of outdated packages.
I use it very often.

First I run yarn upgrade to update automatically all minor versions. Then I run yarn outdated and already manually update packages to major versions with changing my sources.
I think so workflow use the most part of people who use yarn or npm.
Why is it not implemented?
Even here @arcanis mentioned that outdated is the main command a year ago yet: #546 (comment)