Issue #2022509 by Soul88, StephaneQ, hussainweb, lslinnet, andypost, penyaskito, effulgentsia: Deprecate taxonomy_vocabulary_load_multiple() and taxonomy_term_load_multiple() in favour of entity_load_multiple().

Issue #1818560 by Berdir, fago, Wim Leers, jessebeach, dawehner, YesCT: Convert taxonomy entities to the new Entity Field API.

Issue #1849752 by effulgentsia, Berdir, jibran, neclimdul: Abstract non-Drupal-specific parts of AnnotatedClassDiscovery into a Drupal\Component base class.