Issue #2849669 by alexpott, pwolanin, Munavijayalakshmi, dawehner: Fix \Drupal\Component\Utility\Unicode() because of the Symfony mbstring polyfill

Issue #2854529 by alexpott, xjm, klausi, Chi, Mixologic: Fix Drupal.Scope.MethodScope - all methods should have scopes

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 #1565972 by mradcliffe, bzrudi71, pjohans, c960657, daffie, tim.plunkett: Remove static caching of array in mapConditionOperator()

Issue #1267508 by fietserwin, daffie, lisa.ugray, chx, alexpott, Berdir, dawehner, Crell: Subselects don't work in DBTNG conditions, except when used as value for IN

Revert "Issue #1267508 by fietserwin, lisa.ugray, daffie, chx, Crell: Subselects don't work in DBTNG conditions, except when used as value for IN"

This reverts commit 22a241ca.

Issue #1267508 by fietserwin, lisa.ugray, daffie, chx, Crell: Subselects don't work in DBTNG conditions, except when used as value for IN

Issue #2719695 by alexpott, Mile23: Fix 'Drupal.Classes.ClassDeclaration.CloseBraceAfterBody' coding standard

Issue #2665992 by alexpott, klausi, heykarthikwithu, xjm, tstoeckler: @file is not required for classes, interfaces and traits

Issue #2502621 by Pravin Ajaaz, hussainweb, Peacog, jhodgdon, ivanjaros: Replace implement notes with inheritdoc tag

Issue #2515018 by joshi.rohit100, sdstyles, joelpittet: Lowercase the instances of camelcase'd instanceOf in core for consistency

Issue #2492967 by dawehner, cilefen, greggles, larowlan, hussainweb, chx, bircher, mr.baileys, webchick, Berdir, Fabianx, catch, pwolanin, Crell: SQL layer: $match_operator is vulnerable to injection attack

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

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

Issue #2343127 by tadityar, harshil.maradiya, aphickey, bburg, ashutoshmishra: Docblock fixes for core/lib/Drupal/Core/Database/Query

Issue #2358079 by pwolanin, Berdir: Require a specific placeholder format in db_query() in order to trigger argument expansion, and require explicit 'IN' parameter for conditions

Issue #2161943 by Berdir, sun, jibran: Throw a helpful exception for empty IN conditions in Database\Query\Condition.

Issue #1614186 by RobLoach, tim.plunkett, msonnabaum, Crell, jhodgdon, Niklas Fiekas: Update coding standards for using 'native' PHP classes like stdClass in namespaced code.

Issue #1414412 by pillarsdotnet, MrHaroldA, droplet: Fixed Skip #conjunction key in __clone() method of core/includes/database/query.inc.

Initial move and rename of database classes to PSR-0 namespaces.  So far only MySQL has been converted.