Issue #610076 by fietserwin, yingtho, te-brian, mikeryan, Dave Cohen: Add a primary key to the {taxonomy_index} table and prevent duplicates being inserted.

Issue #2225739 by killua99, Berdir, andypost, pfrenssen: Remove usage of field_info_instances(), use EntityManager::getFieldDefinitions() instead.

Issue #2228903 by anthonylindsay | alexpott: Taxonomy_term_load_children claims to restrict by vid but this is not possible.

Issue #2225431 by mr.baileys, Wim Leers, swentel: Apply formatters and widgets to Taxonomy Term base fields.

Issue #2226903 by pwolanin, dawehner, tvn, martin107, jessebeach: Step 1: Move static menu links to yml files.

Issue #2178725 by pwolanin, crowdcg, effulgentsia, Sutharsan: Make all core menu link machine names and the corresponding route names match.

Issue #1316692 by tim.plunkett, dawehner: Convert hook_admin_paths() into declarative properties on routes.

Issue #2204143 by ianthomas_uk, sun: Remove deprecated drupal_explode_tags() and drupal_implode_tags().

Issue #1996238 by sun, nod_, damiankloip, Wim Leers, longwave, alexpott, Xano, mdrummond, Mark Carver, Jeff Burnz, highrockmedia, joelpittet, et al: Replace hook_library_info() by *.libraries.yml file.

Issue #2187735 by ianthomas_uk, Sutharsan, andypost: Add removal information to docblock of all @deprecated functions.

Issue #1857336 by Xano, swentel, Berdir, InternetDevels: Use entity variable in $build for taxonomy_term entity.

Issue #2164827 by Berdir, Xano, tim.plunkett: Rename the entityInfo() and entityType() methods on EntityInterface and EntityStorageControllerInterface.

Issue #2047633 by pwolanin, dawehner, kim.pepper, Xano, amateescu, tim.plunkett: Move definition of menu links to hook_menu_link_defaults(), decouple key name from path, and make 'parent' explicit.

Revert "Issue #2047633 by dawehner, pwolanin, Xano, amateescu, tim.plunkett: Move definition of menu links to hook_menu_link_defaults(), decouple key name from path, and make 'parent' explicit."

This reverts commit 531fd593.

Issue #2047633 by dawehner, pwolanin, Xano, amateescu, tim.plunkett: Move definition of menu links to hook_menu_link_defaults(), decouple key name from path, and make 'parent' explicit.

Issue #2015687 by smiletrl, amateescu, Berdir, fago: Convert field type to FieldType plugin for taxonomy module.

Issue #2090541 by plopesc, yched: Avoid storing numeric target_id()'s for default values in field instance CMI files.

Issue #2084463 by dawehner, pwolanin, David_Rothstein, tim.plunkett, Xano: Convert contextual links to a plugin system similar to local tasks/actions.

Issue #2102125 by dawehner, tim.plunkett, neclimdul, pwolanin, YesCT, damiankloip, Tim Bozeman: Big Local Task Conversion.

Issue #2050835 by Berdir | yched: Move Widget, Formatter, and FieldType plugin types to the Core\Field system.