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 #2313095 by claudiu.cristea, l0ke, umarzaffer, mrjmd, dawehner, alexpott, catch: Move node constants to NodeInterface

Issue #2743183 by szato, nielsvandermolen: Fatal error in Book navigation block for unpublished parent book item

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 #2491155 by mikeburrelljr, Mac_Weber, opdavies: Update drupal.org and kernel.org URLs in core modules (Follow-up to 2489912)

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

Issue #2429261 by Wim Leers: Replace the hardcoded cache key on the book navigation block with a 'book navigation' cache context

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

Issue #2322509 by prics, cilefen, gaurav.goyal, harijari, Temoor: Replace all instances of node_load(), node_load_multiple(), entity_load('node') and entity_load_multiple('node') with static method calls.

Issue #2284103 by alexpott, fabpot, damiankloip, Xano, Xen, Berdir: Fixed Remove the request from the container.

Issue #2052473 by ricky.middaugh, lokapujya, Jalandhar, mgifford, jessebeach, BarisW, falcon03: Add aria-label or aria-describedby attributes to all <nav> elements.

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 #2209025 by dawehner, fgm, pwolanin: Phase 3 - Make the BookManager interface more coherent, move more code out of book.module.

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

Issue #2084421 by dawehner, pwolanin, YesCT, clemens.tolboom, Berdir, Xano, Sutharsan: Phase 2 - Decouple book module schema from menu links.

Issue #1947880 by chrisjlee, tim.plunkett, Xano, s_leu, Berdir, effulgentsia, penyaskito, dawehner: Replace node_access() with $entity->access().

Issue #2124287 by jessebeach: Book module's BookNavigationBlock passes poorly formatted variable data to the book-all-books-block template.

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

Issue #2062573 by claudiu.cristea, tim.plunkett, Xano: Change notice: Add method defaultConfiguration() in ConfigurablePluginInterface.

Issue #1498674 by plach, das-peter, Schnitzel, dawehner, YesCT, attiks, Berdir, Gábor Hojtsy, Soul88, Carsten Müller: Refactor node properties to multilingual.

Issue #1987298 by tim.plunkett, quicksketch: Shorten directory structure and PSR-0 namespacing for plugins.

Issue #1969276 by effulgentsia, tim.plunkett, EclipseGc: Refactor block plugins to make room for a BlockBase::build() implementation.

Issue #1849752 by effulgentsia, Berdir, jibran, neclimdul: Abstract non-Drupal-specific parts of AnnotatedClassDiscovery into a Drupal\Component base class.