<commit_before># Upgrade to 2.0

## BC Break: Moved `Doctrine\DBAL\Migrations` to `Doctrine\Migrations`

Your migration classes that previously used to extend `Doctrine\DBAL\Migrations\AbstractMigration` now need to extend
`Doctrine\Migrations\AbstractMigration` instead. The `Doctrine\DBAL\Migrations\AbstractMigration` class will be
deprecated in the `1.7.1` release to prepare for the BC break.

## BC Break: Removed `Doctrine\DBAL\Migrations\MigrationsVersion`
<commit_msg>Update UPGRADE.md for the release that will contain the AbstractMigration deprecation.<commit_after># Upgrade to 2.0

## BC Break: Moved `Doctrine\DBAL\Migrations` to `Doctrine\Migrations`

Your migration classes that previously used to extend `Doctrine\DBAL\Migrations\AbstractMigration` now need to extend
`Doctrine\Migrations\AbstractMigration` instead. The `Doctrine\DBAL\Migrations\AbstractMigration` class will be
deprecated in the `1.8.0` release to prepare for the BC break.

## BC Break: Removed `Doctrine\DBAL\Migrations\MigrationsVersion`

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