Issue #3069043 by mikelutz: Trigger an error on direct access of ContentEntityStorageBase::doLoadMultipleRevisionFieldItems() and mark it to be set abstract in Drupal 9

Issue #3070369 by lauriii, zrpnr, bnjmnm: Remove Drupal\views_ui\ViewEditForm::form dependency to jQuery UI tabs

Issue #2849745 by voleger, yogeshmpawar, gaurav.kapoor, Berdir, Munavijayalakshmi, vacho, cilefen, daffie: Replace documentation recommending db_*() wrappers

Issue #3039026 by kim.pepper, Berdir, Peter Majmesku, vadim.hirbu, YurkinPark, andypost, dww, claudiu.cristea, alexpott, jibran, dawehner, mikelutz: Deprecate file_directory_temp() and move to FileSystem service

Issue #3067768 by Mixologic, greg.1.anderson, alexpott, Krzysztof Domański, Mile23: Random test fail in ManageGitIgnoreTest

Issue #3060070 by Krzysztof Domański: Add dataProvider for \Drupal\Tests\Core\Block\BlockBaseTest::testGetMachineNameSuggestion

Issue #3069028 by alexpott: Properly Deprecate Drupal\Core\Access\AccessResult::cacheUntilConfigurationChanges

Issue #3047801 by Eduardo Morales, mikelutz, pguillard, nlisgo, sathish.redcrackle, Berdir: Replace all calls to the deprecated Drupal::l() function in Core

Issue #3035312 by kim.pepper, andypost, martin107, yogeshmpawar, naveenvalecha, pguillard, Berdir, dww, claudiu.cristea, jibran, Mile23: Move file_scan_directory() to file_system service

Issue #3066439 follow-up by alexpott: Stop invoking pre-save methods in EntityStorageInterface::restore()

Issue #3069033 by mikelutz, Berdir: Properly deprecate Node::setRevisionAuthorId and Node::getRevisionAuthor

Issue #3058498 by fconnolly, yogeshmpawar, init90, leolando.tan, Berdir: Deprecate/Remove Apcu4Backend

Issue #3066439 by alexpott, amateescu, Charlie ChX Negyesi, catch, casey, Berdir, daniel.bosen: Stop invoking pre-save methods in EntityStorageInterface::restore()

Issue #2780475 by alexpott, Jo Fitzgerald, mpdonadio, dawehner: assertEscaped() and assertUnescaped don't work as you would expect in JavascriptTestBase

Issue #3067584 by idebr, mondrake, Niklan, andypost, catch, alexpott: Pager template renders attributes that do not exist

Issue #2912237 by karthikkumarbodu, smagdits, gawaksh, init90, karimei, vacho, andypost, shubham.prakash, mmbk, cilefen, tatarbj, borisson_, Lendude: Remove calls to deprecated method assertEqual from Config tests

Revert "Issue #3067584 by idebr, Niklan, andypost: Pager template renders attributes that do not exist"

This reverts commit 087e020d.

Revert "Issue #3055443 by alexpott, amateescu, catch, Berdir, chr.fritsch: Switch to a memory backend for running the database updates"

This reverts commit c22202ec.

Issue #3068858 by alexpott, Berdir: Properly deprecate \Drupal\Core\Entity\EntityTypeRepositoryInterface::clearCachedDefinitions

Issue #2818677 by msankhala, NickWilde, Berdir, alexpott, dimaro, poornima.n, sidharthap, dhirendra.mishra, keshav.k, xjm, mahtab_alam, ieguskiza, borisson_, catch, larowlan: Replace usages of deprecated method drupal_render_root()

Issue follow-up #3002933 by alexpott: Fix "The Drupal\editor\Plugin\EditorBase::settingsFormSubmit method is deprecated since version 8.3.x and will be removed in 9.0.0." and friends

Issue #2924781 by osman, yogeshmpawar, zaporylie, mfernea: Missing @var annotation for scalars that do not provide default values

Issue #3065474 by tim.plunkett, jeremyr, omkar06: An error occurs when viewing an entity after removing all layout sections and Quickedit module enabled

Issue #3065261 by gabesullice, Wim Leers: Add a local task for JSON:API's settings page so other modules can add their own tasks

Issue #2959282 by alexpott, jibran, Mile23: Fix "Install profile will be a mandatory parameter in Drupal 9.0." deprecation