Issue #1561362 by Niklas Fiekas, chrisdolby, mtift: Change file_transfer() to use BinaryFileResponse.

Issue #1939024 by Alan Evans, mtift, Crell: Convert action_admin_manage() to a new-style Controller.

Issue #1801356 by dawehner, disasm, amateescu, effulgentsia: Entity reference autocomplete using routes.

Issue #1945418 by tim.plunkett, jaskho: Fixed New-style placeholders in menu_router() table break breadcrumbs, menu tree, etc.

Issue #1847084 by jessebeach, trawekp, LewisNyman, nod_, tarekdj: Fixed Vertical toolbar doesn't work with overlay (measure/track displacing elements better + provide change events for them).

Revert "Issue #1938980 by Crell, rootatwc, tim.plunkett: Move controller derivation to route enhancers."

Temporary rollback; this broke AJAX paths. Working on better test coverage.

This reverts commit 221099b5.

Issue #512026 by Berdir, effulgentsia, sun, marcingy, Eric_A, xjm, katbailey, Damien Tournoud, alexpott, beejeebus, pillarsdotnet: Move () storage from cache to new state/key-value system.

Issue #1865206 by alexpott: clean up ConfigFactory + ConfigStorageController::save/postsave/rename().

Issue #1658846 by penyaskito, Schnitzel, xjm, agentrickard, effulgentsia, kalman.hosszu, vijaycs85, Gábor Hojtsy, disasm, YesCT: Add language support to node access grants and records.

This reverts commit 13b929b6.

Issue #1919208 by vijaycs85, rahuldolas123, Gábor Hojtsy: Create configuration schemas for taxonomy module.

Issue #1953444 by amateescu, xjm: Make 'target bundles' required on the Entity reference instance settings form to help increase their visibility/sanity.

Issue #1934738 by sun: Fixed Exception: Serialization of 'Closure' is not allowed in serialize() (line 154 of dblog.module).

Issue #1850798 follow-up by David_Rothstein, magicmyth: Remove diffAssoc() wrapper, and fix bug in diffAssocRecursive() (with tests)

Issue #1945680 by dawehner: Provide a method that checks whether a certain entity type provides a certain controller.

Issue #1919016 by dawehner, Berdir: Remove term_access() tag in TermStorageController::buildQuery().

Issue #1945066 by chertzog, joachim: Fixed node_theme() doesn't declare the file for theme_node_admin_overview() .

Issue #1942144 by sandipmkhairnar: Fixed Make Language module active config save format match the default yml file.