Yii 2 User release 2.0.0-alpha2

Note: This fixes some major bugs from previous 2.0.0-alpha release.

This release is basically a code overhaul and does not contain any functionality changes.

IF THIS BROKE YOUR APP, the quick fix is to limit your version via composer:
"amnah/yii2-user": "1.0.0@beta". Otherwise, please see the Upgrade Notes
to sync your app with this latest version.