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

Issue #2323921 by Michael Hodge Jr | jhodgdon: Fixed Add user page (admin/people/create) remembers values and should not.

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 #749748 by Bès, penyaskito, sun, hefox, Dave Reid, mavimo | c960657: Fixed Contact, register and comment forms do not prefill with user info from browser.

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

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

Issue #2002246 by tompagabor, floretan, lauriii, pakmanlh, rbomhof | pixelite: Capitalize operations links in the comment and taxonomy term admin UI.

Issue #2095195 by yched, fago, Berdir, amateescu, swentel, pfrenssen, Xano: Remove deprecated field_attach_form_*().

Issue #2203407 by nod_, sun: Replace #attached library array values with provider-namespaced strings.

Issue #2163203 by joelpittet, longwave, saki007ster: Remove calls to deprecated global $user wherever possible (outside bootstrap and authentication).

Issue #1996238 by sun, nod_, damiankloip, Wim Leers, longwave, alexpott, Xano, mdrummond, Mark Carver, Jeff Burnz, highrockmedia, joelpittet, et al: Replace hook_library_info() by *.libraries.yml file.

Issue #2068329 by peximo, plach, LinL, marcingy, Désiré, penyaskito, herom, chx: Convert user SQL queries to the Entity Query API.

Issue #2062039 by InternetDevels, Xano, h3rj4n: Replace user_access() calls with ->hasPermission() in user module.

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

Issue #1913618 by tim.plunkett, amateescu: Convert EntityFormControllerInterface to extend FormInterface.

Issue #1843380 by wuinfo, netol, xjm: Fixed The message telling that the new user has been e-mailed is always displayed, even if it's not true.

Issue #1874300 by Berdir, swentel: Remove $entity_type argument from field.module functions that receive a single $entity.

Issue #985360 by superspring, erikwebb: Fixed Inconsistent punctuation for user.module watchdog messages.

Issue #1772584 by andypost, gumanist, nod_: Get rid of user_login_block() & user_login() in favour of user_login_form().

Issue #1496534 by cosmicdreams, alexpott, aspilicious, kim.pepper, acrollet, dagmar, beejeebus, wizonesolutions | heyrocker: Convert account settings to configuration system.

Issue #1618172 by jcisio, corvus_ch, estebanvalerio.h, Berdir: Remove entity_uri() in favor of EntityInterface::uri().