Issue #2700335 by er.pushpinderrana, elakiyasamuel, malavya, therealssj, joachim, jhodgdon: hook_entity_update() and friends should document $entity->original

Issue #2718583 by alexpott: Remove deprecated usages of Node::setRevisionAuthorId() and Node::getRevisionAuthor()

Issue #2648562 by gapple, neclimdul: Symfony's ApcClassLoader requires APC backwards compatibility layer

Issue #2682723 by thpoul, jagjitsingh_drupal, avinashm, maggo: Allow ckeditor_stylesheets to refer to external URL, for e.g. webfonts

Issue #2716991 by mpdonadio: Incorrect ISO datetime attribute for date-only fields w/ default formatter

Issue #2407853 by alexpott, aerozeppelin, Berdir, vladan.me, dawehner: TaxonomyIndexTid Views plugin stores selected terms with the ID instead of UUID

Issue #2711537 by chgasparoto, kostyashupenko: Syntax errors (un-quoted or mis-quoted strings) in various code examples in docs

Issue #2667588 by dimaro, malavya, johnrosswvsu: Document that a module's classes are not available during hook_requirements() 'install' phase

Issue #2710201 by alexpott, andypost: Fix Drupal.Semantics.FunctionT.WhiteSpace and Drupal.Semantics.FunctionT.Concat

Issue #2707641 by alexpott, anoopjohn: Ensure core compliance to Drupal.Commenting.FunctionComment.ParamCommentIndentation (part 2)

Issue #2572307 by vprocessor, attiks, andriyun, alexpott, pfrenssen: Fix 'Generic.PHP.UpperCaseConstant' coding standard

Issue #2702609 by Wim Leers, Berdir, Fabianx: Disable placeholdering (and BigPipe) on unsafe requests to help find forms as fast as possible (to allow EnforcedResponses to work)

Issue #2614202 by alexpott, felribeiro, dawehner, catch: CoreServiceProvider::registerUuid() assumes all environments have the same functions available

Issue #2711645 by alexpott, dawehner: ConfigInstaller::isSyncing() should return true always during a config sync

Issue #2702001 by olafkarsten, Wim Leers: Inject config factory for BigPipe (including in exception handlers)