Issue #3112290 by Spokje, mondrake, mpdonadio, daffie, andypost, Kristen Pol, quietone, mallezie, alexpott: Replace REQUEST_TIME in procedural code

Issue #2010380 by alexpott, TR, tstoeckler, MerryHamster, sanjayk, andypost, chx, Pancho, daffie: Deprecate module_load_install() and replace it with ModuleHandler::loadInstall

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 #2384049 by suntog, mikemiles86, lokapujya, arpitr: Remove deprecated function _update_fetch_data and its usage

Issue #2384035 by arpitr, mikemiles86, lokapujya: Remove deprecated function _update_refresh and its usage

Issue #2358991 by JeroenT, ianthomas_uk, rpayanm, jamesdixon, er.pushpinderrana, Ashok Negi: Remove usage of drupal_mail()

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

Issue #950534 by mparker17, mgifford, Mixologic, jbloomfield, erinclerico, theMusician, wmostrey | zirvap: [policy] Consistently use email instead of e-mail in Drupal.

Issue #2166915 by ianthomas_uk, sun | plach: Remove uses of deprecated language functions in tests and procedural code.

Issue #2187735 by ianthomas_uk, Sutharsan, andypost: Add removal information to docblock of all @deprecated functions.

Issue #1987888 by zengenuity, kim.pepper, disasm, vijaycs85, JB13, dawehner: Convert update_manual_status() to a new style controller.

Issue #2080689 by BerdArt, chertzog: Remove Unused local variable  from /core/modules/update/update.fetch.inc.

Issue #2002116 by damiankloip, jhedstrom, ParisLiakos, dawehner: Convert core/modules/update/lib/Drupal/update/Tests/UpdateCoreUnitTest.php to phpunit.

Issue #2089635 by tim.plunkett, disasm, larowlan: Convert non-test non-form page callbacks to routes and controllers.

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

Issue #1668866 by ParisLiakos, aspilicious, tim.plunkett, pdrake, g.oechsler, dawehner, Berdir, corvus_ch, damiankloip, disasm, marcingy, neclimdul: Replace drupal_goto() with RedirectResponse.

Issue #2014037 by hussainweb, kgoel: Replace drupal_container() with Drupal::keyValue() in the update module.

Issue #1937600 by Berdir, rootatwc | webchick: Determine what services to register in the new Drupal class.

Issue #1547008 by Berdir, Sutharsan: Replace Update's cache system with the (expirable) key value store.

Issue #1810880 by Albert Volkman, vijaycs85, barbun, alexpott: Convert update_last_check() and update_last_email_notification() variables to CMI system.

Issue #1754208 by PrabhuG, webflo, savithac, Gábor Hojtsy: Convert hook_mail() and hook_mail_alter() to langcode.

Issue #1263040 by catch, akamaus, luk.stoops: Fixed No notifications sent when updates are available.

Issue #965078 by catch, akamustang: Fixed HTTP request checking is unreliable and should be removed in favor of watchdog() calls.

Issue #1036780 by Mike Wacker: Added Drupal.org should collect stats on enabled sub-modules and core modules.