Issue #3066954 by andrewmacpherson, Wim Leers, bnjmnm, OBKev: Admin toolbar not usable with latest versions of JAWS due to mis-use of aria-owns

Issue #3087626 by greg.1.anderson, Mixologic, jibran, Mile23, alexpott, xjm: Convert drupal/core-recommended & c. into a subtree split

Issue #3087531 by alexpott, jibran, gnikolovski, xjm, Mixologic: Use Diactoros LTS version 1.7, not 1.8 which is out of security coverage

This reverts commit a0539080.

Issue #3087518 by kim.pepper: Remove references to queryAddPage() in comments and deprecation notices

Issue #2233595 by amateescu, marcingy, SpartyDan, visabhishek, Sharique, carletex, slashrsm, hanoii, plach, Berdir, xjm: Deprecate the custom path alias storage

Issue #3089752 by bnjmnm, zrpnr: Follow-up to #3074267 Refactor use of classList in quickedit for browser compatibility

Issue #3083570 by huzooka, shashikant_chauhan, rensingh99, ckrina, katannshaw, shimpy, andrewmacpherson, mfairchild365: Do not hide the label for the text format select input

Issue #3089697 by alexpott, swentel: Regression due to File::setValidationRequired in _file_save_upload_single()

Issue #3088447 by Mile23, heddn, Krzysztof Domański: BuildTestBase->standUpServer always starts new server

Issue #3075645 by chr.fritsch, maacl, super_romeo, volkerk, alexpott: temporary://update-cache-60b12ec6 is not a directory. in FileSystem->scanDirectory()

Issue #3085062 by jibran, amateescu, larowlan, xjm, Berdir: Declare a conflict on pathauto versions that aren't compatible with 8.8.0

Issue #3088853 by alexpott, mondrake: Require typo3/phar-stream-wrapper ^3.1.3 and pear/archive_tar ^1.4.8 in order to support PHP 7.4

Issue #2905429 by zrpnr, tim.plunkett, Wim Leers, Jacine: Library definitions containing only dependencies should be valid

Issue #3089168 by phenaproxima, bnjmnm: Remove or reduce representational CSS classes in all Media Library tests

Issue #3088369 by mikelutz, alexpott, Berdir, Gábor Hojtsy, andypost, martin107, greg.1.anderson, dawehner, jibran, Wim Leers, Mile23, catch: Update Drupal 9 to Symfony 4.4-dev

Issue #3088681 by phenaproxima, seanB, bnjmnm, lauriii: Make MediaLibraryTest less dependent on representational CSS selectors

Issue #3088448 by alexpott, greg.1.anderson, Mixologic, Mile23: Remove bin/composer from composer.lock file

Issue #3067251 by zrpnr, catch, lauriii, Wim Leers, xjm, mikelutz, dww, tedbow: Deprecate unused jQuery UI components in favour of a suite of contrib modules

Issue #3079791 by mikelutz, shaal, Wim Leers, hussainweb, xjm, catch, Charlie ChX Negyesi, Mixologic, Gábor Hojtsy, heddn, amateescu: Bump Drupal's minimum PHP version to 7.2 as soon as 9.0.x is branched (a higher version may be required later)

Issue #3067085 by huzooka, lauriii, bnjmnm, tim.plunkett, phenaproxima: Views top dropbutton breaks when editing a view

Issue #3074267 by finnsky, bnjmnm, Wim Leers, zrpnr, lauriii, xjm, catch, droplet, justafish, FezVrasta: Replace jQuery UI position() with PopperJS

Issue #3080259 by gabesullice, alexpott, Wim Leers: Links with different target attributes are improperly merged

Issue #3088135 by alexpott, mikelutz, Wim Leers, Berdir, heddn: TestSiteApplicationTest::testInstallInDifferentLanguage requires localize.drupal.org

Issue #3067386 by tim.plunkett, effulgentsia, bnjmnm, lauriii, Wim Leers, huzooka, xjm: AJAX rebuild of Views UI form re-renders parts of the form without using Form API, so additional hooks are needed in lieu of hook_form_view_edit_form_alter()