Issue #2895685 by xjm, Gábor Hojtsy, prestonso, Wim Leers, effulgentsia, mpdonadio, gnuget, dawehner, DyanneNova, timmillwood: Create release notes (a.k.a CHANGELOG) for Drupal 8.4.0

Issue #2701335 by kekkis, hchonov, Ben Buske: Run garbage collection during migration memory reclamation

(cherry picked from commit 5f9fe909)

Issue #2905213 by chr.fritsch, marcoscano, xjm, Berdir: Bring back 'access media overview' permission

(cherry picked from commit e2c898cc)

Issue #2781103 by Dom., k4v, gaurav.kapoor, mpdonadio, dawehner, Lendude: Date FAPI element type do not allow AJAX via #ajax API

(cherry picked from commit 575f01946c79055f2d5a56d23952dc610f629426)

(cherry picked from commit 1188f1c1)

Issue #2912333 by vijaycs85, gilesmc, phenaproxima: Revision log field doesn't appear under 'Revision Information' tab

(cherry picked from commit 210ca8a1)

Issue #2853872 by heddn, maxocub, masipila, phenaproxima, quietone, andypost, larowlan: Migration for forum and article comments: duplicate comment types and incorrect comment_entity_statistics

(cherry picked from commit 5cfa420d)

Issue #2850085 by maxocub, heddn, Jo Fitzgerald, Gábor Hojtsy, catch, larowlan, mikeryan: Redirects for translation set migration path in Drupal 6 and 7

(cherry picked from commit 2df0fc02)

Issue #2907233 by quietone, madlobz, heddn, maxocub: File migration from D6 to D8 version using Migrate Drupal UI

(cherry picked from commit 8685e7c7)

Issue #2856625 by swarad07, alexpott, Yogesh Pawar, Chi, aleksip: (revert) Remove unused menu active trail service from SystemMenuBlock

Revert "Issue #2711353 by rakesh.gectcr, Jo Fitzgerald, quietone, chx, Yogesh Pawar, Pavan B S, biguzis, phenaproxima, mikeryan, vasi, iMiksu, Berdir, dawehner, benjy: Migrate never unsets existing data for content entitites"

This reverts commit 3d524aaa.

(cherry picked from commit c783750b)

Issue #2711353 by rakesh.gectcr, Jo Fitzgerald, quietone, chx, Yogesh Pawar, Pavan B S, biguzis, phenaproxima, mikeryan, vasi, iMiksu, Berdir, dawehner, benjy: Migrate never unsets existing data for content entitites

(cherry picked from commit 3d524aaa)

Issue #2906879 by xjm, Sam152: WorkflowTypeBase:: labelWeightMultisort() has meaningful param/return keys, but docs do not indicate this

(cherry picked from commit 2d018242)

(cherry picked from commit 57762d19)

Issue #2898886 by Sam152, timmillwood: ContentModerationConfigureForm should use inline list in place of concatenated markup

(cherry picked from commit e64d7536)

(cherry picked from commit d1227108)

Issue #2715589 by claudiu.cristea, jibran, amateescu: Remove stale 'handler_submit' setting from the ER field configs

(cherry picked from commit cf553a00)

Issue #2902766 by maxocub, masipila, Jo Fitzgerald: Node 'comment open / closed' status not migrated

(cherry picked from commit b0a7be53)

Issue #2907654 by joelpittet, amateescu, Patrick R., mikran, alisonjo2786: Orphaned menu routes breaking site installs and module uninstalls

(cherry picked from commit 6487eda3)

(cherry picked from commit cfb2af03)

Issue #2715485 by harsha012, mfernea, malavya, himanshu-dixit, vprocessor, tameeshb, Mile23, RajeevK, Jo Fitzgerald, tiago.urbano, xjm, klausi: Fix 'Drupal.Commenting.InlineComment.NoSpaceBefore' coding standard

(cherry picked from commit 2e18fe93)

(cherry picked from commit 4005f93b)

Issue #2728579 by Mile23, neclimdul, Munavijayalakshmi, klausi, dawehner: Explicitly skip @requires module in PHPUnit Kernel and Browser tests

(cherry picked from commit 5f3b66ed)

Issue #2866513 by michielnugter, jonathan1055, mpdonadio, Jo Fitzgerald, Lendude, dawehner, Wim Leers: Convert web tests to browser tests for comment module

(cherry picked from commit 73bba855)

Lee Rowlands authored 7 years ago and Jess committed 7 years ago

(cherry picked from commit 867ecd84)

Issue #2909952 by edwardaa: Flood MemoryBackend::isAllowed() throws exception: 'Undefined index: xxx'

(cherry picked from commit 4e2d3ba4)

Issue #2572791 by Mile23, andriyun, attiks, RoSk0: Fix 'Drupal.WhiteSpace.OpenBracketSpacing' coding standard

(cherry picked from commit 4577185c)

Issue #2864610 by Manuel Garcia, andypost, Lendude: Convert ExposedFormUITest in views_ui module to BrowserTestBase

(cherry picked from commit 7bf7cebe)

Issue #2909349 by claudiu.cristea, Wim Leers: UrlHelper::parse() is wrong with absolute URLs having fragment but not query

(cherry picked from commit fbb8a06f)

(cherry picked from commit 5c310806)

Issue #2835767 by Wim Leers, vaplas, xjm, dawehner, Gábor Hojtsy, Berdir, seanB, larowlan: Media + REST: comprehensive test coverage for Media + MediaType entity types

(cherry picked from commit 3b6a05b5)

Issue #2908605 by jibran, jhedstrom, xjm, amateescu: Pass field storage to Tables::addNextBaseField()

(cherry picked from commit b6251536)

Issue #2909743 by jibran, mpdonadio, Mile23: Again update non-Symfony dependencies in lock file before 8.4.0

(cherry picked from commit 214c6b58)

Revert "Issue #2859246 by Jo Fitzgerald, phenaproxima: Allow MigrateExecutable to be constructed without a message object"

This reverts commit c2b8ae99.

Issue #2859246 by Jo Fitzgerald, phenaproxima: Allow MigrateExecutable to be constructed without a message object