Issue #2734983 by Nikhilesh Gupta, neerajsingh, dimaro, mayurjadhav: Remove deprecated SafeMarkup::checkPlain usages from core

Issue #2708255 by dawehner, yoroy, swentel, Jacine, Gábor Hojtsy: Add support for #required on #type => details

This reverts commit 2893aec5.

Issue #2723611 by Ashish.Dalvi, Sagar Ramgade, gaurav.pahuja, Sonal.Sangale, marvin_B8, valthebald, Mile23, xjm: Remove entity_load* usage for node entity type

Revert "Issue #2723589 by Ashish.Dalvi, gaurav.pahuja, marvin_B8, valthebald: Remove entity_load* usage for filter_format entity type"

This reverts commit 39498e7d.

Issue #2723589 by Ashish.Dalvi, gaurav.pahuja, marvin_B8, valthebald: Remove entity_load* usage for filter_format entity type

Issue #2716685 by Mile23: Part 2: Fix several errors in the 'Drupal.Commenting.DocComment' coding standard

Issue #2595613 by swentel, krknth, heykarthikwithu, k4v, aerozeppelin, naveenvalecha, alexpott: '#title_display' => 'invisible' does not work for composite form elements

Issue #2679953 by malavya, subharanjan, AjitS, aditya_anurag, mikebell_, jhodgdon: Replace mentions of url() in docs

Issue #2659524 by gaydabura, rakesh.gectcr: Removing wrongly added @return in core/includes/form.inc

Revert "Issue #2595613 by krknth, heykarthikwithu, k4v, aerozeppelin, naveenvalecha, swentel: Forms - '#title_display' => 'invisible' is not working for radio buttons ?"

This reverts commit 5016b9c6.

Issue #2595613 by krknth, heykarthikwithu, k4v, aerozeppelin, naveenvalecha, swentel: Forms - '#title_display' => 'invisible' is not working for radio buttons ?

Issue #2637680 by Dom., mikeocana, laranajim: Submit buttons for GET forms in search/views are not W3C valid due to empty 'name' attribute

Issue #2578561 by tim.plunkett, joelpittet, Bojhan, Fabianx, xjm, cilefen, David_Rothstein, DamienMcKenna: Move "Inline Form Errors" functionality to optional module and restore D7-style form errors by default

Issue #2575615 by alexpott, pwolanin, stefan.r, catch, dawehner, effulgentsia, xjm, David_Rothstein, iMiksu, lauriii, joelpittet: Introduce HtmlEscapedText and remove SafeMarkup::setMultiple() and SafeMarkup::getAll() and remove the static safeStrings list

Issue #2570355 by Sutharsan, stefan.r, kgoel, josephdpurcell, joelpittet, justAChris, dawehner, pfrenssen, pwolanin, David_Rothstein, catch: Replace remaining !placeholder and @placeholder with :placeholder for URLs

Issue #2512306 by StryKaizer, bojanz, googletorp, JeroenT, borisson_, tim.plunkett: Inline errors not shown for details elements

Issue #2532284 by sasanikolic, joelpittet, cilefen, miro_dietiker: HTML is escaped in "all languages" in UI after SafeMarkup change

Issue #2426969 by David_Rothstein, joelpittet, dawehner: Dynamic redirects are no longer possible in the batch API (breaks updating existing modules or themes with the Update Manager)

Issue #2501481 by Cottser, davidhernandez, kfriend, alimac, YesCT, lauriii, tim.plunkett, cilefen, lbainbridge, porchlight: form_select_options() is a theme function in disguise and should not use SafeMarkup::set

Issue #2351015 by plach, effulgentsia, Wim Leers, dawehner, martin107, damiankloip, cilefen, Fabianx, catch, pwolanin, Damien Tournoud, znerol, YesCT, larowlan: URL generation does not bubble cache contexts

Issue #1493324 by tim.plunkett, dmsmidt, mgifford, bleen18, davidhernandez, crasx, mparker17, stefan.r, YesCT, joelpittet, tstoeckler, larowlan, vijaycs85, swentel, rpayanm, Bojhan, LewisNyman, emma.maria, BarisW, njbarrett, rteijeiro, nod_, sun, joshtaylor, mrjmd, webchick, marcvangend, kattekrab, SKAUGHT, bowersox, andrewmacpherson, Manjit.Singh, RavindraSingh, Wim Leers, BLadwin, aspilicious, mortendk, mausolos, jessebeach, Gábor Hojtsy, anandps, falcon03, franz, andypost, rooby, rootwork, Cottser, Xano: Inline form errors for accessibility and UX

Issue #2472177 by Dom., nod_, drubb, mgifford: Collapsible fieldset have duplicated and wrong aria-expanded

Issue #2296445 by Palashvijay4O, pjonckiere, er.pushpinderrana, roderik, blazey: Batch API: Overriding the queue class and name is not documented

Issue #2463321 by amateescu: Serializing the database connection is dangerous and error-prone, make it unserializable again

Issue #2457887 by prateekMehta, stefan.r, rpayanm, alexpott: Use Utility\SafeMarkup class instead of Utility\String for placeholder(), checkPlain(),format() functions

Issue #2364157 by mpdonadio, dawehner, martin107, Berdir, pcambra, naveenvalecha, tim.plunkett: Replace most existing _url calls with Url objects

Issue #2309737 by rpayanm, hussainweb, max-kuzomko, herom, millerbennett, ianthomas_uk, quietone, Sutharsan, sumitmadan, toddmbloom: Remove deprecated format_plural usage

Issue #2226863 by cs_shadow, filijonka, joelpittet, pguillard: Update stale references to theme functions that have been converted to Twig