Issue #2935256 by Jo Fitzgerald, voleger, kim.pepper, ibustos, Yogesh Pawar, catch, jibran: Remove all usages of drupal_get_message and drupal_set_message in modules

Issue #2961986 by Sam152, Berdir, tstoeckler: The ContentEntityBase entity key cache is purged incorrectly when two keys exist for one field

Issue #2956202 by tim.plunkett, tedbow, amateescu, xjm: EntityDisplayBase::init() should use ::setComponent() for extra fields

Issue #2936161 by Yogesh Pawar, idebr, alexpott: status-messages.html.twig documentation refers to non-existing variable 'display'

Issue #2851736 by borisson_, fago, pritish.kumar, Yogesh Pawar, amateescu, alexpott: Language reference fields do not implement OptionsProviderInterface

Issue #2919157 by benjy, amateescu, Sam152: Unable to convert a non-translatable entity into a revisionable entity

Issue #2216161 by Wim Leers, alexpott, jhedstrom, borisson_, Berdir: Simplify performance settings page

Issue #2225587 by quietone, Jo Fitzgerald, alexpott, heddn, Pavan B S, maxocub, phenaproxima, Gábor Hojtsy, ao2: Migrate D6 i18n menu links

Revert "Issue #2225587 by quietone, Jo Fitzgerald, heddn, Pavan B S, maxocub, phenaproxima, Gábor Hojtsy, ao2, alexpott: Migrate D6 i18n menu links"

This reverts commit 66480d7f.

Issue #2225587 by quietone, Jo Fitzgerald, heddn, Pavan B S, maxocub, phenaproxima, Gábor Hojtsy, ao2, alexpott: Migrate D6 i18n menu links

Issue #2798891 by ankitjain28may, trobey, TR: Define project dependencies in core module .info files

Issue #2958176 by alexpott: Replace all remaining superglobals ($_GET, $_POST, $_REQUEST and $_FILES) with Symfony Request object

Issue #2401797 by John Cook, larowlan, Jo Fitzgerald, dawehner, alexpott, Mile23, kim.pepper, phenaproxima, borisson_, andypost, voleger: Introduce a batch builder class to make the batch API easier to use

Issue #2702683 by Manuel Garcia, xjm, prics, pguillard, Jo Fitzgerald, vg3095, ztl8702, lucian.cazaciuc, bojanz, tstoeckler, hchonov, rszrama, rteijeiro, svjuly, jibran, vdanielpop, vasike, jmikii, jhodgdon, Wim Leers, amateescu, Gabr1el, Drupa1ish, ciprian.stavovei: Add plural labels to entity types

Issue #2877030 by c.nish2k3, martin107, gaurav.kapoor, Mile23, dawehner: Remove stale deprecated code

Issue #2941494 by jhedstrom, Lendude: Deprecate SystemConfigFormTestBase and create kernel test version

Issue #2943627 by tim.plunkett, Falco010, alexpott, samuel.mortenson: Layout Builder does not consult layout plugin for dependencies

Issue #2788087 by alexpott, dawehner, shafiqhossain: Drupal 8: You have requested a non-existent service "router.route_provider.old"

Issue #2907728 by Lendude, vaplas, dawehner, jibran, alexpott, Mile23: Installer: Convert system functional tests to phpunit

SA-CORE-2018-001 by cashwilliams, catch, cilefen, droplet, dawehner, bonus, agentrickard, David_Rothstein, Chi, Gábor Hojtsy, Heine, Wim Leers, Schnitzel, drpal, effulgentsia, tedbow, tim.plunkett, tstoeckler, xjm, will_c, stefan.r, samuel.mortenson, larowlan, greggles, logaritmisk, mpdonadio, pwolanin, plach

Issue #2711099 by heddn, Jo Fitzgerald, edysmp, edgewl2, alexpott, Charlotte17, mikeryan, masipila, quietone, maxocub, phenaproxima: Categorize migrations according to their type

Issue #2784015 by amateescu, jlbellido, Gogowitsch, krknth, ibustos: Widget validation crashes on ItemList violations for widgets with a custom errorElement() implementation

Issue #2941106 by droplet, idebr: Site email address in the install profile form is no longer copied to the user email address

Issue #2943209 by gabesullice, amateescu, Wim Leers: Mark at least one entity_test entity type as 'internal'

Issue #2936511 by hchonov, Berdir, plach, Wim Leers, catch, amateescu, sdewitt: ContentEntityType::getRevisionMetadataKeys() never considers the BC logic because of the new "revision_default" key

Issue #2942073 by effulgentsia, Sam152: Add a "bare.standard.php.gz" test fixture that starts from Drupal 8.4.0

Issue #2927344 by Wim Leers, xjm, TR, webchick, larowlan, David_Rothstein, catch, yoroy: Specifically warn about end dates for PHP support for old versions

Issue #2927344 by Wim Leers, xjm, webchick, larowlan, catch, David_Rothstein, yoroy: Specifically warn about end dates for PHP support for old versions

Issue #2857857 by vegantriathlete, Jo Fitzgerald, snehi, plach, xjm, Skabbkladden: Check use of "it's" in core to ensure proper use

Issue #2923915 by tstoeckler, heddn: Stubbing content entities with required fields with a default value is broken

Issue #2880703 by alexpott, droplet, Daniel.Moberly, yogesh01: Status report page without JavaScript is messed up

Issue #2939940 by bmx269, joelpittet: Update stylelint rules color-hex-case to be consistent with Drupal's CSS standards

Issue #2866818 by harsha012, BrightBold, brahmjeet789, joelpittet: Update stylelint rule number-leading-zero to be consistent with Drupal's CSS standards

Issue #2670730 by chr.fritsch, robpowell, alexpott, tstoeckler, Berdir, bojanz, dawehner: Provide a delete action for each content entity type