Issue #2606334 by Gábor Hojtsy, YesCT, dawehner, Cottser, larowlan, Wim Leers, catch, davidhernandez, nevergone, effulgentsia, attiks, David_Rothstein, chx, MustangGB, tim.plunkett, plach, joelpittet, Ryan Weal, thamas, LewisNyman, gaele, bojanz, yoroy, skyredwang: Update CHANGELOG.txt for the release (compile list of high level changes)

Issue #2599524 by blackra, krknth, jhodgdon, rhett.prichard: Fixing order of documentation sections for /core/lib/Drupal

Issue #2488568 by Jose Reyero, alexpott, Gábor Hojtsy, tstoeckler: Add a TypedDataManagerInterface and use it for typed parameters

Issue #2568977 by alexpott, dawehner, pwolanin, Wim Leers: Replace SafeMarkup::format() in the link generator - it's a bad example to everyone

Issue #2542748 by plach, effulgentsia, jhedstrom, Gábor Hojtsy, alexpott, mpdonadio, catch, dawehner: Automatic entity updates can fail when there is existing content, leaving the site's schema in an unpredictable state

Issue #2493911 by dawehner, larowlan, damiankloip, hussainweb, jibran, cilefen, benjy, iMiksu, mtdowling: Update guzzle, goutte and mink-goutte-driver to the latest release

Issue #1392754 by tss, justAChris, jhodgdon: Comply with new documentation standards for @file for namespaced class files

This reverts commit 598ccc57.

Issue #2335661 by Wim Leers, pwolanin, dawehner, Fabianx, larowlan, catch, Berdir: Outbound path & route processors must specify cacheability metadata

Issue #2363341 by tim.plunkett, donquixote, adci_contributor: Throw exception in Drupal::service() and friends, if container not initialized yet

Issue #2421005 by tim.plunkett: Add \Drupal::hasContainer() instead of checking if \Drupal::getContainer() === NULL

Issue #2392319 by alexpott, effulgentsia: Config objects (but not config entities) should by default be immutable