Issue #3436255 by mondrake, longwave: Fix return typehinting for Compiler and EventSubscriber related classes

Issue #3419914 by Spokje, longwave, bircher, andypost, smustgrave, catch, jurgenhaas: Remove UpdateHookRegistryFactory and UpdateRegistryFactory services

Revert "Issue #3419914 by Spokje, longwave, andypost, smustgrave: Remove UpdateHookRegistryFactory and UpdateRegistryFactory services"

This reverts commit e5c3c870.

Issue #3419914 by Spokje, longwave, andypost, smustgrave: Remove UpdateHookRegistryFactory and UpdateRegistryFactory services

Issue #3414349 by deviantintegral, taraskorpach, alexpott, smustgrave, catch: Improve the performance of \Drupal\Core\Update\UpdateRegistry::getRemovedPostUpdates()

Issue #3328443 by xjm, rpayanm, alexpott, catch, longwave: Replace most strpos() === 0 or !== 0 with str_starts_with()

Issue #3294299 by phma, alexpott, pooja saraah, mikelutz: Regression in functional test performance with a large number of modules

Issue #3279850 by alexpott, dww, lauriii: Theme post updates are not recognised when the theme is used in the installer

Issue #3259188 by alexpott, dww, chr.fritsch: Extend post update system to provide themes a way to install newly-required dependencies

Issue #3222769 by bbrala, alexpott, longwave, Matroskeen: [November 8, 2021] Replace all list (array destructuring) assignment to the array syntax

Issue #3066801 by catch, WidgetsBurritos, pobster, jungle, tim.plunkett, xjm, dww, alexpott, webchick, benjifisher, longwave, worldlinemine, lauriii, Berdir: Add hook_removed_post_updates()

Issue #2829185 by vaplas, Jo Fitzgerald, anmolgoyal74, chipway, gaurav.kapoor, mark_fullmer, amit.drupal, cilefen, longwave, xjm, wturrell, anavarre: Fix spelling errors in Drupal core comments

Issue #2572787 by alexpott, mfernea, attiks, andriyun, andypost, RoSk0, hussainweb, klausi, martin107: Fix 'Drupal.WhiteSpace.CloseBracketSpacing' coding standard

Issue #2901726 by mfernea, gmario, finn.lewis, robertoperuzzo, rachel_norfolk: Fix 'Squiz.Functions.MultiLineFunctionDeclaration' coding standard

Issue #2776975 by joelpittet, dawehner, tim.plunkett, xjm, pfrenssen: March 3, 2017: Convert core to array syntax coding standards for Drupal 8.3.x RC phase

Issue #2783393 by Mile23: Fix 'Drupal.Commenting.FunctionComment.IncorrectParamVarName' coding standard

Issue #2665992 by alexpott, klausi, heykarthikwithu, xjm, tstoeckler: @file is not required for classes, interfaces and traits

Issue #2538108 by dawehner, jhedstrom: Add hook_post_update_X() for data value updates to reliably run after data format updates