v3.0.0 - Deprecated Items Removed

This release removes all deprecated items from the SDK. If you've already
upgraded to v2, most likely you're not depending on these items, and you'll be
able to upgrade to v3 with no code changes. The items have already been disabled
on the server for some time. If you are currently making requests using any of
these items, they are being rejected:

• Role.composite boolean field
• RoleAttachment class
• RoleGrant class

Composite Roles have been replaced with the ability to attach a single Account
to multiple Roles using Account Attachments. See an example
here.

Role Grants have been replaced with Access Rules. See the migration
guide.