Issue #2458543 by mbovan, Anushka-mp, jhedstrom: Entity query age(EntityStorageInterface::FIELD_LOAD_REVISION) only gets current revision ID

Issue #2451395 by dawehner: drupal_get_schema()/drupal_get_complete_schema() no longer work as expected; remove them

Issue #2459819 by Wim Leers, rteijeiro: Remove CacheableInterface (and no longer let block plugins implement it)

Issue #2463321 by amateescu: Serializing the database connection is dangerous and error-prone, make it unserializable again

Issue #2464659 by Wim Leers, rteijeiro: Routes that are varied by the 'user.permissions' cache context for anonymous users must also get the anonymous Role's cache tag

Issue #2465467 by willzyx, Dom., andypost: SystemInfoController::php() should check if function phpinfo() exists

Issue #2448765 by nlisgo, Damien Tournoud, vlad.n, rteijeiro, Berdir, Fabianx, dawehner: Element::children sort order undefined and slower than it could be - This makes tests fail in PHP7

Issue #2451363 by alexpott, Berdir, pjcdawkins: Ensure install_profile is exists in settings.php after installation

Issue #2389455 by hussainweb, AjitS, Mile23, subhojit777, tibbsa, Ayesh: Clean-up system module test members - ensure property definition and use of camelCase naming convention

Issue #2453311 by David_Rothstein, TravisCarden, Dom., rpayanm: Issue #2417983 follow-up: a few more "the the"s

Issue #2461087 by Wim Leers, dawehner: Add 'no_cache' route option to mark a route's responses as uncacheable (was: Cron run response should not be cacheable)

Issue #2444231 by Wim Leers, nlisgo: Fix CacheableInterface so it makes sense (was: "Make Config objects & Entities implement CacheableInterface + add BubbleableMetadata::createFromCacheableObject()")

Issue #2388255 by dawehner, hussainweb, pwolanin: Limit PDO MySQL to executing single statements if PHP supports it

Issue #1897058 by disasm, rteijeiro: Replace "boolean" with "bool" when used as param/return/var type

Issue #2398331 by cilefen, davidhernandez, Wim Leers, nod_: Add the ability to attach asset libraries directly from a template file

Issue #2458349 by Wim Leers: Route's access result's cacheability not applied to the response's cacheability

Issue #2461063 by Wim Leers, effulgentsia: AJAX forms using #ajax broken when page caching is enabled

Issue #2453059 by Wim Leers: Set default render cache contexts: 'theme' + 'languages:' . LanguageInterface::TYPE_INTERFACE

Issue #2457887 by prateekMehta, stefan.r, rpayanm, alexpott: Use Utility\SafeMarkup class instead of Utility\String for placeholder(), checkPlain(),format() functions

Issue #1847596 by amateescu, amitaibu, YesCT, Berdir, David_Rothstein, xjm, rteijeiro, ParisLiakos, webchick, Wim Leers, yched, jhodgdon, Bojhan: Remove Taxonomy term reference field in favor of Entity reference

Issue #2451679 by Wim Leers, dawehner: Validate cache contexts (+ cache contexts in some views plugins wrong)

Issue #2212069 by Gábor Hojtsy, pjonckiere, rteijeiro, cilefen: Non-English Drupal sites get default configuration in English, edited in English, originals not actually used if translated

Issue #2451665 by dawehner: Don't rebuild the route on ModuleInstaller::install() (30% installer speedup)

Issue #2428703 by Wim Leers: Add a 'user.permissions' cache context (was: "Should cache contexts be able to associate a cache tag?")

Revert "Revert "Issue #2457653 by Gábor Hojtsy: System.site langcode is both used as a file language code and a site language code""

This reverts commit 079a52b4.

Revert "Issue #2457653 by Gábor Hojtsy: System.site langcode is both used as a file language code and a site language code"

This reverts commit 364a6e9c.

Issue #2458925 by alexpott: Screen is black and completely unreadable in Configure page after install on standard profile

Issue #2457653 by Gábor Hojtsy: System.site langcode is both used as a file language code and a site language code