Issue #2833116 by smustgrave, mohit_aghera, Ratan Priya, _pratik_, _shY, alexpott, nitin_lama, acbramley, quietone, larowlan, Peter van den Heuvel, ameymudras, alexpott: When Placing a Block on 'Configure Block' page the originally selected region is lost

Issue #3412283 by mathilde_dumond, acbramley, Berdir, smustgrave, BramDriesen, larowlan: Editing a block_content entity no longer redirects to the overview

Issue #3325167 by smustgrave, acbramley, murilohp, rkoller, larowlan, AaronMcHale, dww, BramDriesen: Revisit the redirect to 'add block' form in the 'add block content' form

Issue #3318549 by smustgrave, mstrelan, larowlan, rkoller, AaronMcHale, acbramley: Rename Custom Block terminology in the admin UI

Issue #3255699 by mfb, xjm, andrea.cividini, quietone, smustgrave: Demote routine content entity log entries from "notice" to "info"

Issue #3019834 by Berdir, alexpott: Add @trigger_error() to deprecated url/link EntityInterface methods

Issue #2935256 by Jo Fitzgerald, voleger, kim.pepper, ibustos, Yogesh Pawar, catch, jibran: Remove all usages of drupal_get_message and drupal_set_message in modules

Issue #2873696 by nvexler, wengerk, gido, Jo Fitzgerald, xjm: Add @internal to core classes, methods, properties to Form Classes

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 #2669802 by chr.fritsch, Berdir, seanB, bojanz, dawehner, yoroy, slashrsm, tstoeckler: Add a content entity form which allows to set revisions

Issue #2716081 by timmillwood, dixon_: BlockContent should have revision_user and revision_created fields and implement RevisionLogInterface

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

Issue #2471689 by klopez, shashikant_chauhan, harings_rob, snehi, jhodgdon: Entity API documentation should consistently refer to handlers rather than controllers

Issue #2529892 by larowlan, stefan.r, Berdir, almaudoh: BlockContentForm uses form validation instead of a validation Constraint

Issue #2453175 by tim.plunkett, plach, rteijeiro, effulgentsia, eshta, dawehner, fago, Berdir, alexpott: Remove EntityFormInterface::validate() and stop using button-level validation by default in entity forms

Revert "Issue #2459753 follow-up by tim.plunkett, alexpott: EntityForm::validate() should be able to modify the form structure"

This reverts commit fb5ea78b.

Issue #2459753 follow-up by tim.plunkett, alexpott: EntityForm::validate() should be able to modify the form structure

Revert "Issue #2459753 by tim.plunkett: EntityForm::validate() should be able to modify the form structure"

This reverts commit d4d83576.

Issue #2377113 by JeroenT, mglaman, LinL, pcambra: Replace all instances of entity_load('block_content') and entity_load_multiple('block_content') with static method calls

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 #2030597 by adci_contributor, larowlan, daffie, Thomas Brekelmans, boztek, chakrapani, InternetDevels, robbertnl, basvanderheijden: Expand BlockContent and BlockContentType with methods

Issue #2230637 by plach, fran seva, yched, swentel: Create a Language field widget and the related formatter

Issue #2382543 by rpayanm, ianthomas_uk: Remove usage of drupal_html_class() and drupal_clean_css_identifier()

Issue #2355909 by penyaskito, alexpott, Gábor Hojtsy, DuaelFr: language.settings config is not scalable

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

Issue #2335659 by tim.plunkett, dawehner, effulgentsia, sun: Remove FormState ArrayAccess usage from core.

Issue #2022875 by Berdir, alexpott, Xano, swentel, tim.plunkett, vladan.me: Resolve difference between submitForm(), submit(), and save() in EntityFormController.

Issue #2212427 by Mixologic, YesCT, Sutharsan, mgriego, icseh., visabhishek, znerol: Use interface instead of class name for language manager where appropriate.

Issue #2308821 by tim.plunkett: Replace FormErrorInterface with $form_state->setErrorByName() and $form_state->setError().

Issue #2272481 by herom, ParisLiakos, tim.plunkett: Remove usages of watchdog() from forms, plugins and controllers.

Issue #2124957 by Wim Leers, catch: Replace 'content' cache tag with 'rendered' and use it sparingly.

Issue #2246665 by jaredsmith, martin107, YesCT, filijonka, tstoeckler: Typehint with Drupal\Core\Language\LanguageInterface instead Drupal\Core\Language\Language.

Issue #1920862 by martin107, Mixologic, cilefen, larowlan, xan.ps, tim.plunkett | sun: Rename custom_block.module to block_content.module.