Issue #2016177 followup by amateescu, agentrickard: Regression: Refactor 'autocreate entity' handling from entity_reference().
Issue #1950632 by effulgentsia, Wim Leers, amateescu, yched: Create a FieldDefinitionInterface, decoupled from and config entities, and use it for formatters and widgets.
Issue #1953444 by amateescu, xjm: Make 'target bundles' required on the Entity reference instance settings form to help increase their visibility/sanity.
Issue #1849752 by effulgentsia, Berdir, jibran, neclimdul: Abstract non-Drupal-specific parts of AnnotatedClassDiscovery into a Drupal\Component base class.
Issue #1801304 by Amitaibu, amateescu, effulgentsia, tim.plunkett, EclipseGc, Fabianx, Cottser: Added Entity reference field.