Issue #2760167 by kim.pepper, markcarver, jibran, dawehner, znerol, Wim Leers, larowlan, xjm, tim.plunkett: Add \Drupal\Core\Messenger\Messenger

Issue #2776975 by joelpittet, dawehner, tim.plunkett, xjm, pfrenssen: March 3, 2017: Convert core to array syntax coding standards for Drupal 8.3.x RC phase

Issue #2389335 by Berdir, naveenvalecha, claudiu.cristea, almaudoh, joachim, jibran: Deprecate entity.query service and replace with using the entity storage's getQuery() method

Issue #2156401 by alexpott, moshe weitzman, tedbow, dawehner, greg.1.anderson, phenaproxima, chris.smith, heddn, balsama, xjm, Mile23, izus, Manuel Garcia, sun, pwolanin, Berdir: Write install_profile value to configuration and only to settings.php if it is writeable

Issue #2822296 by shashikant_chauhan, jp.stacey, xjm: Wrong fully qualified class name  \Drupal\Core\Routing\LinkGeneratorInterface::generate() in docs of Drupal::l()

Revert "Issue #2156401 by alexpott, moshe weitzman, tedbow, dawehner, greg.1.anderson, phenaproxima, chris.smith, heddn, balsama, xjm, Mile23, izus, Manuel Garcia, sun, pwolanin, Berdir: Write install_profile value to configuration and only to settings.php if it is writeable"

This reverts commit 480eb82c.

Issue #2156401 by alexpott, moshe weitzman, tedbow, dawehner, greg.1.anderson, phenaproxima, chris.smith, heddn, balsama, xjm, Mile23, izus, Manuel Garcia, sun, pwolanin, Berdir: Write install_profile value to configuration and only to settings.php if it is writeable

Issue #2717207 by mpdonadio, dawehner, catch, alexpott: Add a time service to provide consistent interaction with time()/microtime() and superglobals

Issue #2785355 by timmillwood, dawehner, claudiu.cristea, borisson_: Expose the class resolver on \Drupal

Issue #2606376 by rakesh.gectcr, Himanshu5050, sdstyles, dawehner, nicrodgers: mark \Drupal::l()  as deprecated

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