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

Issue #1837388 by tim.plunkett, dawehner, Wim Leers: Provide a ParamConverter than can upcast any entity.

Issue #2222719 by effulgentsia, tim.plunkett, xjm, dawehner: Use parameter matching via reflection for access checks instead of pulling variables from request attributes.

Issue #2185831 by tim.plunkett: Split up ParamConverterManager and stop throwing NotFoundHttpException.

Issue #2109035 by tim.plunkett, damiankloip, dawehner, chx: Make access checkers (much) easier to find.

Issue #1988612 by effulgentsia, yched, Wim Leers, Berdir, Pancho: Apply formatters and widgets to rendered entity base fields, starting with node.title.

Issue #2066535 by tim.plunkett, jsst, Berdir: Add EntityManagerInterface and stop typehinting with EntityManager.

Issue #2048223 by dawehner, ParisLiakos, herom, fubhy, damiankloip, vijaycs85, joelpittet, tim.plunkett: Add $account argument to AccessCheckInterface::access() method and use the current_user() service.

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

Issue #1901100 by Gábor Hojtsy, jessebeach, Wim Leers: Make Edit module work with TempStore, so revisions are not saved on all atomic field edits.

Issue #1950632 by effulgentsia, Wim Leers, amateescu, yched: Create a FieldDefinitionInterface, decoupled from  and  config entities, and use it for formatters and widgets.

Issue #1876992 by yched, Wim Leers: Fixed Toolbar doesn't show the 'Edit' tab: fix by using new entity display settings, add tests.

Issue #1824500 by Wim Leers, tkoleary, frega, jessebeach, henribergius, effulgentsia, nod_, yched: In-place editing for Fields.