Issue #2894068 by Jo Fitzgerald, davidsickmiller, alexpott, heddn, Yogesh Pawar, quietone, xjm: datetime_type is not set correctly when migrating datetime fields from D7

(cherry picked from commit c5fba612)

Issue #2930715 by alexpott, dawehner: Recursive rebuild caused by installing admin_toolbar_tools module

(cherry picked from commit 0d2a45ad)

Issue #2837022 by hchonov, xjm, vlad.dancer, plach, matsbla, Gábor Hojtsy: Concurrently editing two translations of a node may result in data loss for non-translatable fields

(cherry picked from commit 0c20200d)

(cherry picked from commit 4cd7b495)

(cherry picked from commit d372f6d8)

(cherry picked from commit ed45b4d5)

Issue #2779921 by kiamlaluno, alexpott: hook_field_widget_form_alter() still reference a hook that is not used anymore

(cherry picked from commit 384a35ca)

(cherry picked from commit 1872e83b)

Issue #2899708 by gaurav.kapoor, tan33sh, tedbow, droplet, Wim Leers: `quote` should be `blockquote` in off-canvas.base.css

Issue #2932154 by jhedstrom: ModerationInformation::getLatestRevisionId returns access-specific results

(cherry picked from commit f3b60eda)

Issue #2932551 by jeqq: Error when calling ModerationStateFieldItemList::updateModeratedEntity() if the entity doesn't have workflow

(cherry picked from commit e145f2a5)

Issue #2346893 by lauriii, idebr, slashrsm, RavindraSingh, Rade, Fabianx, alexpott, swentel, gauravjeet, darrenwh, deepak_zyxware, joelpittet, Wim Leers, Yogesh Pawar, Vj, ivan.chavarro, josephdpurcell, josmera01, rloos289, kattekrab, Tanvish Jha, csakiistvan, xjm, larowlan, akalata: Duplicate AJAX wrapper around a file field

(cherry picked from commit f9548751)

Issue #2921033 by Jo Fitzgerald, masipila, phenaproxima, xjm, Wim Leers: Improve API documentation of DrupalSqlBase source plugin

(cherry picked from commit aee6bea5)

Issue #2862671 by masipila, Jo Fitzgerald, kleog, phenaproxima, quietone: Add documentation to SqlBase source plugin

(cherry picked from commit 85bec2d35d35eef988c1cc85ed03e291945addaa)

(cherry picked from commit 3cf0815a)

Issue #2913864 by Jo Fitzgerald, chiranjeeb2410, matslats, phenaproxima: badly constructred link in drupal_set_message

(cherry picked from commit dad8d64e)

catch authored Dec 18, 2017 and Lee Rowlands committed Dec 19, 2017

Issue #2928846 by alexpott, Berdir: [PHP 7.2] count() parameter must be an array or an object that implements Countable

(cherry picked from commit 968da88d)

Issue #1489692 by Liam Morland, pfrenssen, YesCT, geekinpink, sudishth, josmera01, David_Rothstein: Incorrect handling of file upload limit exceeded - file widget disappears

(cherry picked from commit a44a23e6)

Issue #2914938 by timmillwood, RajabNatshah, xjm, Manuel Garcia, amateescu, Wim Leers: Preview of content - Notice: Undefined offset: 0 in _quickedit_entity_is_latest_revision() (line 196 of core/modules/quickedit/quickedit.module)

(cherry picked from commit 522ed005)

Issue #2880445 by pjcdawkins, japerry, gargsuchi, q0rban: Config sync should not throw a warning when not being writable

(cherry picked from commit 8fb59191)

Issue #2927636 by alexpott, Mile23, Mixologic: Backport --supress-deprecations to run-tests.sh 8.4.x

Issue #2928778 by plach: Exception when trying to save a new revision after manually setting the original revision ID

(cherry picked from commit 0ee25311)

Issue #2929464 by tedbow, mpdonadio: Tests under "core/modules/ckeditor/tests/modules/src/Kernel" are in the wrong folder and do not get tested

(cherry picked from commit 0b67173a)

Issue #2795317 by hswong3i, alexpott, Lendude, bircher, dawehner, martin107, Jo Fitzgerald, mondrake: Allow PHPUnit 6+ support for object mocking

(cherry picked from commit f320141d)

(cherry picked from commit 5564bba7)

Issue #2862746 by masipila, quietone, phenaproxima: Add documentation to EntityFieldStorageConfig destination plugin

(cherry picked from commit 8859f625)

Issue #2927844 by Jo Fitzgerald, quietone, heddn: Correct references to 'iterator' plugin to be 'sub_process'

(cherry picked from commit ec15d5edb641a95ced7e6c902713c619dd8d69c1)

Issue #2927563 by tstoeckler, amateescu: Aggregator feed "refresh" field should have a default value

(cherry picked from commit 8da25f6f)

Issue #2927569 by tstoeckler, amateescu: Various tests do not set values for required field when creating entities

(cherry picked from commit 7d1545b3)

(cherry picked from commit e4c874e1)

Revert "Issue #2929076 by marcoscano: Fix wrong \Drupal\Core\Entity\EntityTypeInterface::getBundleLabel() docblock"

This reverts commit 261d0fee.

Issue #2929076 by marcoscano: Fix wrong \Drupal\Core\Entity\EntityTypeInterface::getBundleLabel() docblock

(cherry picked from commit bc1e39c6)

Issue #2927758 by Wim Leers, dagmar: Update DbLogResourceTest to use the ResourceTestBase base class instead of the deprecated RESTTestBase

(cherry picked from commit 1aab6ab2)

Issue #2717965 by Yogesh Pawar, pguillard, alexpott, Liam Morland, skylord, oxy86, cilefen, balagan, Anthony Fok: Site name is not UTF-8 encoded in email headers

(cherry picked from commit 66fc1807)

Revert "Issue #2670966 by xjm, Crell, claudiu.cristea, alexpott, timmillwood, rakesh.gectcr, catch, dawehner, David_Rothstein, hchonov, martin107, tstoeckler, andypost, cilefen, RobLoach, Fabianx, salvis, hussainweb, JeroenT, larowlan, pfrenssen, daffie, webchick, wturrell: Warn users of old PHP versions"

This reverts commit 0a750b60.