stable sonata packages for symfony 2.7 and 2.8

[S]

Hello,

Which are stable versions of sonata bundles to use with symfony 2.7?  or are all admin bundles already stable with symfony 2.8?

Is this spreadsheet that lists compatible sonata versions with different symfony versions outdated?

https://docs.google.com/spreadsheets/d/1fSpS10nzlEj9HE-GdZ-BHcxileEzHwRIzLlNfdNtZ2k/edit#gid=0

my composer.json is like this for sonata bundles for symfony 2.7:

        "sonata-project/admin-bundle": "^3.0",

        "sonata-project/doctrine-orm-admin-bundle": "^3.0",

        "sonata-project/easy-extends-bundle": "^2.1",

        "sonata-project/user-bundle": "^3.0",

        "sonata-project/page-bundle": "^3.0",

        "sonata-project/notification-bundle": "^3.0",

        "sonata-project/core-bundle": "^3.0"

However, I am getting some errors in the admin site, and I"m wondering if I should upgrade sonata, but it may not work with symfony 2.7?  when I tried requiring dev-master version of sonata-admin in composer, I get dependency error that higher symfony version is required.

which version should my composer require for all these sonata packages listed above to work with symfony 2.7?

thank you.