Bundle CRUD API moved from Field to Entity API

The field_attach_[CRUD]_bundle functions have been moved from Field API to Entity API as managing of bundles should be done by the entity system.

D7

// Create
field_attach_create_bundle('node', $type->type);
// Rename
field_attach_rename_bundle('node', $type->old_type, $type->type);
// Delete
field_attach_delete_bundle('node', $name);

D8

// Create
\Drupal::entityManager()->onBundleCreate('node', $type->type);
// Rename
\Drupal::entityManager()->onBundleRename('node', $type->old_type, $type->type);
// Delete
\Drupal::entityManager()->onBundleDelete('node', $name);

Additionally, the hooks are renamed as well:

D7

// Act on creating a bundle.
function hook_field_attach_create_bundle($entity_type, $bundle) {

}
// Act on renaming a bundle.
function hook_field_attach_rename_bundle($entity_type, $bundle_old, $bundle_new) {

}
// Act on deleting a bundle.
function hook_field_attach_delete_bundle($entity_type, $bundle, $instances) {

}

D8

// Act on creating a bundle.
function hook_entity_bundle_create($entity_type, $bundle) {

}

// Act on renaming a bundle.
function hook_entity_bundle_rename($entity_type, $bundle_old, $bundle_new) {

}

// Act on deleting a bundle.
// Instances of a bundle are not passed anymore as an argument. If you need
// them, you have to call them yourself.
// @see field_entity_bundle_delete()
function hook_entity_bundle_delete($entity_type, $bundle) {

}

Note When config entity extends ConfigEntityBundleBase then its content entities are handled automatically for this