Issue #2719695 by alexpott, Mile23: Fix 'Drupal.Classes.ClassDeclaration.CloseBraceAfterBody' coding standard

Issue #2665992 by alexpott, klausi, heykarthikwithu, xjm, tstoeckler: @file is not required for classes, interfaces and traits

Issue #2451397 by Jaesin, damiankloip, alexpott, dawehner: Entity denormalization fails to retrieve bundle

Issue #2181601 by damiankloip: Drupal\serialization\Normalizer\EntityNormalizer should extend ComplexDataNormalizer.

Issue #2165155 by Berdir, tim.plunkett: Change $entity_type to $entity_type_id and $entity_info to $entity_type/$entity_types.