Issue #2975368 by msankhala: badly formatted sample code in core.api.php for hook_config_import_steps_alter

Issue #2962961 by vegantriathlete, msankhala, alexpott: Fix typos in core.api.php and correct incorrect @see

Issue #2937888 by dhruveshdtripathi, idebr, RoSk0, mohit1604, mfernea, borisson_: Fix 'Drupal.Commenting.DocComment.LongNotCapital' coding standard

Issue #2935255 by Jo Fitzgerald, kim.pepper, voleger, alexpott, martin107, jibran, catch: Remove all usages of drupal_get_message and drupal_set_message in core lib

Issue #2488116 by dipen chaudhary, cpj, ashutoshsngh, joachim, znerol, priya.chat, jhodgdon, anavarre, jmarkel: Document the session subsystem

Issue #2939242 by yo30: Update Drupal Documentation to reflect that assert() eval syntax is no longer to be used

Issue #2933424 by David_Rothstein, harsha012, jhodgdon, vaplas: English-specific links to php.net shouldn't be used in non-translatable strings

Issue #2526150 by catch, Wim Leers, Denchev, hussainweb, dawehner, mpdonadio, borisson_, fgm, olli, alexpott, vaplas, flocondetoile, Berdir, Fabianx, cilefen: Database cache bins allow unlimited growth: cache DB tables of gigabytes!

Revert "Issue #2526150 by catch, Wim Leers, Denchev, hussainweb, dawehner, mpdonadio, borisson_, fgm, olli, alexpott, flocondetoile, Berdir, Fabianx: Database cache bins allow unlimited growth: cache DB tables of gigabytes!"

This reverts commit 1a71b1a9.

Issue #2526150 by catch, Wim Leers, Denchev, hussainweb, dawehner, mpdonadio, borisson_, fgm, olli, alexpott, flocondetoile, Berdir, Fabianx: Database cache bins allow unlimited growth: cache DB tables of gigabytes!

Issue #2891784 by FeyP: Use correct class name for EventDispatcherInterface in Events API documentation

Issue #2845731 by ashish-deynap, vaplas, chiranjeeb2410, Munavijayalakshmi, tramsaal, xjm: Theming guide links are wrong

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 #2839267 by chiranjeeb2410, er.pushpinderrana, joyceg, oldpopsong: Argument of \Drupal::formBuilder()->getForm() should implement FormInterface

Issue #2296423 by tim.plunkett, dsnopek, swentel, Manuel Garcia, tedbow, alexpott, xjm, andypost, dawehner, effulgentsia, Berdir, jhedstrom, catch, benjy, jibran, Wim Leers, tstoeckler, larowlan, webchick: Implement layout plugin type in core

Issue #2810621 by Gábor Hojtsy, dawehner, xjm, jhodgdon, klausi, Wim Leers: Improve core.api.php documentation about browsertests and javascript tests

Issue #2797721 by jp.stacey: Custom form handler's submitForm not called when using example in documentation

Issue #2777451 by markdorison, er.pushpinderrana, alexpott: @see references not forming links in documentation

Issue #2716661 by anoopjohn: Fix 'Drupal.Commenting.FunctionComment' coding standard - Issues related to @see references

Issue #2700661 by anoopjohn: Ensure core compliance to Drupal.Commenting.FunctionComment.ParamCommentIndentation (part 1).

Issue #2658412 by leolando.tan, lokapujya, rakesh.gectcr, harsha012, thisisit, zweishar, miteshmap: Config API topic makes no mention of getEditable()

Issue #2680307 by metzlerd, jhodgdon: Direct people to Services and Elements pages on API sites in a clearer way

Issue #2571845 by drupal.ninja03, hussainweb, anil280988, snehi, jhodgdon, GoZ, stefan.r: Links to wikipedia/php.net should be part of the actual t() string so they can be localized

Issue #2603818 by jhodgdon, beejeebus, blackra: Add defgroups for listing page headers for api.drupal.org

Issue #2487588 by YesCT, Leksat, Schnitzel, alexpott, anavarre, xjm: Move CMI import/export directory "staging" to "sync", as it is confused with staging environments

Issue #2112679 by Berdir, damiankloip, nlisgo, krlucas, lokapujya, m1r1k, piyuesh23, blueminds, stefan.r, subhojit777, dawehner, kerby70, Dustin LeBlanc, znerol, JeroenT, borisson_, scor, amitgoyal, s_leu: getUsername() should return the username getDisplayName() for the formatted user name

Issue #2547707 by kekkis, screon, deepakaryan1988, latikas, jhodgdon, hussainweb, teemuaro, Crell, HeimdallJHM: Split routing documentation out of menu.api.php

Issue #2349431 by talhaparacha, Cyberwolf, bhavinvora, pjonckiere: Docs mention support for PUT instead of POST

Issue #2545958 by pjonckiere, jhodgdon, matslats: Module/profile use of config/optional is apparently not documented