Issue #2267453 by alexpott, dawehner, damiankloip: Fixed Views plugins do not store additional dependencies.

Issue #2340667 by YesCT, Pedro Lozano, alexpott, martin107: Protect Drupal\Core\Language\Language::id, and use getId().

Issue #2340123 by Wim Leers: Setting cache tags can be tricky: use strings instead of nested arrays to improve DX.

Issue #2236781 by damiankloip, alexpott, xjm: Fixed ViewsData only writes one per-table cache entry per request.

Issue #1862202 by plach, Berdir, katbailey, ParisLiakos, alexpott, chx, sun, larowlan, Gábor Hojtsy, cosmicdreams, vijaycs85, YesCT, penyaskito, andypost, Albert Volkman, joelpitett: Objectify the language system.

Issue #1754246 by webflo, swentel, penyaskito, andypost, alexpott, YesCT, dagmar: Languages should be configuration entities.

Issue #1962234 by dawehner, damiankloip, alexpott: Move views_fetch_fields() into an autoloadable class.

Issue #1620010 by dawehner, ParisLiakos, plach, jibran: Move LANGUAGE constants to the Language class.

Issue #1962578 by Berdir, damiankloip, dawehner, xjm: Fixed ViewsDataCache writes multiple times in __destruct().

Issue #1942660 by larowlan, damiankloip, dawehner: Add a method to allow modules to clear the \Drupal\views\ViewsDataCache->storage during run-time.

Issue #1891980 by Berdir, amateescu: Add Service termination API to reliable terminate/shut down services in the container.

Issue #1792536 by chx, Berdir, sun, David_Rothstein: Remove the install backend and stop catching exceptions in the default database cache backend.

Issue #1880834 by damiankloip, dawehner: Fixed Don't return all data from views_data() service when an invalid table is requested.