Issue #1938314 by kgoel, mparker17, Kars-T, disasm, tim.plunkett, daffodil_naveen, ygerasimov, jibran, dawehner, wamilton, Letharion | Crell: Convert book_export() to a new-style Controller.

Issue #2062213 by duozersk: Fixed Remove Unused local variable  from /core/lib/Drupal/Core/StreamWrapper/LocalStream.php.

Issue #2078967 by pwolanin: Fix formatting to 80 columns for @throws in UrlGeneratorInterface::generateFromRoute().

Issue #2079025 by yched, Berdir: Remove dead code (e.g. field_test().storage.inc) due to entity storage refactoring.

This reverts commit a234a4fa.

Bad commit message. :P

Issue #2078285 by pwolanin, dawehner: Add short-cut methods to the \Drupal class for generating URLs and links from routes.

Issue #2038135 by RobLoach, donquixote, Crell, ParisLiakos, catch: Use the Composer autoloader to make everything simpler.

Issue #1951268 by larowlan, nick_schuch, jibran, dawehner, alexpott, tim.plunkett: Convert /forum and /forum/% to new routing system, remove forum_forum_load(), forum_get_topics(), create new Forum service.

Revert "Issue #2002162 by klausi, eugene.ilyin: Convert form validation of users to entity validation."

This reverts commit 5b41b6f8.

Issue #2057869 by dawehner, jibran: Provide an alias for 'plugin.manager.entity' called 'entity.manager'.

Issue #2057589 by smiletrl, tim.plunkett, alexpott, dawehner: Rename ControllerInterface to ContainerInjectionInterface.

Issue #1497374 by yched, chx, amateescu, plach, Damien Tournoud, fago, swentel: Switch from Field-based storage to Entity-based storage.

Issue #1974492 by larowlan, jibran, disasm, tim-e, mdrummond, robeano, nick_schuch, wamilton, effulgentsia, tim.plunkett: Convert taxonomy_overview_terms() to a Form Controller.

This reverts commit 135f4e6a.

Needs more discussion.

Issue #2061979 by rhm50, InternetDevels: Replace user_access() calls with ->hasPermission() in contextual module.

Issue #2071957 by Wim Leers: Fixed Cannot change existing images or links through Text Editor's image/link dialogs.

Issue #2044583 by jlindsey15, Gábor Hojtsy, Wim Leers, Berdir: Add EntityChangedInterface to allow entities with 'changed' field to be properly cached.

Issue #1946348 by splatio, jibran, kim.pepper, David Hernández, tim.plunkett | mtift: Convert all of confirm_form() in comment.admin.inc to the new form interface.

Issue #2062363 by sergeypavlenko: Remove calls to deprecated global  in core/modules/system/tests/modules/form_test()/form_test().module.

Issue #2062011 by InternetDevels, Albert Volkman: Replace user_access() calls with ->hasPermission() in path module.

Issue #2046097 by Berdir, Gábor Hojtsy: Fixed Very long URL (>255) leads to PDO exception when translation source locations are updated.