Issue #3252386 by alexpott, longwave, duadua, mondrake, mstrelan, andypost, Spokje, VladimirAus, catch, effulgentsia, Berdir, xjm, bircher, joachim, larowlan: Use PHP attributes instead of doctrine annotations

Issue #3351004 by Natallia: Deprecations for PHP 8.1 get_class() and get_called_class() without argument

Issue #3158562 by jhodgdon, pameeela, dww, sime, Kristen Pol: Consistently refer to "menu links" as that, not "menu items", in the UI

Issue #3018863 by joelpittet, Berdir, alexpott: Make SystemMenuBlock's new constructor argument dependency optional

Issue #2594425 by Sam152, gapple, naveenvalecha, dubcanada, Nitesh Pawar, Fonski, bircher, Eric115, ricovandevin, pameeela, mishradileep, juusechec, dawehner, jibran, xjm, ifrik, swentel, kim.pepper, Wim Leers, acbramley, 4aficiona2, yoroy, alexpott, ckaotik, andypost, FeyP: Add the option in system menu block to "Expand all items in this tree"

Issue #2631468 by snufkin, johnmcc, DamienMcKenna, aaronbauman, kiwad, acrosman, esolitos, Tom Robert, Yogesh Pawar, acke: Menu subtrees in menu blocks show all subitems regardless of the active menu item

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 #2856625 by swarad07, Yogesh Pawar: Remove unused menu active trail service from SystemMenuBlock

Issue #2803203 by lodey, lomasr, tkoleary, AndreaD, yoroy, joachim, xjm, ifrik: Simplify the descriptions of "menu levels" in the menu block plugin

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

Issue #2541344 by Wim Leers, borisson_, DietrichM, Xano, tim.plunkett, alvar0hurtad0, joshi.rohit100: BlockBase subclasses should merge their cache tags/contexts with the parent's (BlockBase's)

Issue #1805054 by Wim Leers, Gábor Hojtsy, effulgentsia, jibran, jessebeach, catch, dawehner, Fabianx, sun, larowlan: Cache localized, access filtered, URL resolved, and rendered menu trees

Issue #2432837 by Wim Leers, Fabianx: Make cache contexts hierarchical (e.g. 'user' is more specific than 'user.roles')

Issue #2329101 by Wim Leers: CacheableInterface only has a getCacheKeys() method, no getCacheContexts(), leads to awkward implementations

Issue #2318437 by Wim Leers, Gábor Hojtsy, geertvd: Replace the hardcoded langcode key on blocks with the 'language' cache context

Issue #2040135 by Wim Leers, Berdir: Caches dependent on simple config are only invalidated on form submissions

Issue #2340123 by Wim Leers: Setting cache tags can be tricky: use strings instead of nested arrays to improve DX.

Issue #474004 by mdrummond, kim.pepper, Wim Leers, jibran, tim.plunkett, joachim | JohnAlbin: Add options to system menu block so primary and secondary menus can be blocks rather than variables.

Issue #2301317 by pwolanin, dawehner, Wim Leers, effulgentsia, YesCT, xjm, alexpott: MenuLinkNG part4: Conversion.

Revert "Issue #2301317 by pwolanin, effulgentsia, Wim Leers, dawehner, alexpott: MenuLinkNG part4: Conversion."

This reverts commit fd2db9cd.

Issue #2301317 by pwolanin, effulgentsia, Wim Leers, dawehner, alexpott: MenuLinkNG part4: Conversion.

Issue #1875996 by Xano, tim.plunkett, neclimdul, Rajendar Reddy, Jalandhar: Reconsider naming conventions for derivative classes.

Issue #2224861 by Wim Leers, dawehner, pwolanin: Cache SystemMenuBlock and BookNavigationBlock per active trail (currently cached per URL, this breaks on very long URLs).

Issue #2158003 by Wim Leers, msonnabaum, effulgentsia, moshe weitzman: Remove Block Cache API in favor of blocks returning #cache with cache tags.

Issue #1874498 by tim.plunkett, dawehner, jibran, benjy: Provide and use API methods for retrieving base plugin and derivative names from block plugin IDs.

Issue #2085201 by jessebeach, tim.plunkett, dawehner, yoroy: Use sensible block categories (rather than module-name categories).

Issue #1951386 by benjy, theduke, andypost, tim.plunkett: Fixed Extend BlockPluginInterface::access to allow passing in an account.