Issue #2078101 by Xano: Fixed Update year in COPYRIGHT.txt.
Issue #2018411 by ParisLiakos, tim.plunkett, msonnabaum: Figure out a nice DX when working with injected translation.
Issue #1126000 by yched, swentel, catch: Fixed Document that we don't support partial entity updates.
Issue #2046097 by Berdir, Gábor Hojtsy: Fixed Very long URL (>255) leads to PDO exception when translation source locations are updated.
Issue #2062011 by InternetDevels, Albert Volkman: Replace user_access() calls with ->hasPermission() in path module.
Issue #2062363 by sergeypavlenko: Remove calls to deprecated global  in core/modules/system/tests/modules/form_test()/form_test().module.
Issue #2065393 by dlu: Find 'use Drupal' and replace with inline references to \Drupal.
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 #2041333 by tstoeckler: Inject the module handler into the entity access controller.
Issue #2062399 by kattekrab: Add Percona Server to list of supported MySQL alternative databases.
Issue #1939096 by chrisjlee, joelpittet, drupalmonkey | Cottser: Convert theme_feed_icon() to Twig.
Issue #2047659 by Wim Leers, dawehner: Add test coverage for edit module access checkers.
Issue #2044583 by jlindsey15, Gábor Hojtsy, Wim Leers, Berdir: Add EntityChangedInterface to allow entities with 'changed' field to be properly cached.
Issue #2071957 by Wim Leers: Fixed Cannot change existing images or links through Text Editor's image/link dialogs.
Issue #2061979 by rhm50, InternetDevels: Replace user_access() calls with ->hasPermission() in contextual module.
Issue #2032895 by balsama, yannickoo: Follow-up use better technique for vertical centering.
Revert "Issue #2041333 by tstoeckler: Inject the module handler into the entity access controller."

This reverts commit 135f4e6a29790d3d4b45081c7922cbadb2e5e03e.

Needs more discussion.
Merge branch '8.x' into comment-fieldapi4

Also introduced CommentManager::getParentEntityUri() to get URI of commented entity

Conflicts:
	core/modules/comment/comment.admin.inc
	core/modules/comment/comment.routing.yml
Fix most of broken tests
Fixed 1907960.353 and start fix field settings conversion