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 #2938972 by runeasgar, MerryHamster, ryanhayes, msankhala, Jo Fitzgerald: Replace drupal_render() in sample code

Issue #2961986 by Sam152, Berdir, tstoeckler: The ContentEntityBase entity key cache is purged incorrectly when two keys exist for one field

Issue #2949177 by tim.plunkett, samuel.mortenson, mark_fullmer, tedbow, EclipseGc, andypost: Introduce a service that returns filtered plugin definitions

Issue #2956202 by tim.plunkett, tedbow, amateescu, xjm: EntityDisplayBase::init() should use ::setComponent() for extra fields

SA-CORE-2018-004 by David_Rothstein, alexpott, larowlan, Heine, Pere Orga, tim.plunkett, mlhess, xjm, Jasu_M, drumm, cashwilliams, quicksketch, dawehner, pwolanin, samuel.mortenson

(cherry picked from commit bb6d3966)

Issue #2851736 by borisson_, fago, pritish.kumar, Yogesh Pawar, amateescu, alexpott: Language reference fields do not implement OptionsProviderInterface

Issue #2937543 by alexpott, Berdir, larowlan: Using the Yaml::PARSE_KEYS_AS_STRINGS flag is deprecated since Symfony 3.4 as it will be removed in 4.0

Issue #2955673 by msankhala, jenlampton: Text 'logged in as admin' in update.php message is ambiguous

Issue #2960324 by bdlangton, ameya1727, Chi, davidneedham: Wrong deprecation message in core/lib/Drupal/Core/Routing/RouteFilterInterface.php

Issue #2916018 by amateescu, plach, Berdir, tstoeckler: Allow the table mapping to be initialized from outside the storage

Issue #2919157 by benjy, amateescu, Sam152: Unable to convert a non-translatable entity into a revisionable entity

Issue #2949351 by alexpott, Lendude, tim.plunkett, dawehner: Add a helper class to make updating configuration simple

Issue #2380285 by amateescu, daffie, gaurav.kapoor, Pavan B S, plach, tstoeckler: SqlContentEntityStorage::mapFromStorageRecord() should respect the table mapping

Issue #2906229 by mpdonadio, wengerk, colan, gambry, Sutharsan, joelstein, Manuel Garcia, catch, marcvangend: Add DateTimePlus::getPhpDateTime() for situations that require a DateTimeInterface

Issue #2958862 by msankhala, jhodgdon, joachim: Sample code needs to have namespace on the Url class

Issue #2889684 by ankitjain28may, kanav_7, borisson_, gaurav.kapoor, naveenvalecha, joachim, alexpott: missing class docs for ContainerDerivativeDiscoveryDecorator

Issue #2958407 by alexpott: Properly deprecate SafeMarkup::isSafe, SafeMarkup::checkPlain and the SafeMarkup class

Issue #2939491 by hchonov, slasher13, alexpott, dawehner: Prevent memory leak and inconsistent entity references when serializing entity storages

Issue #2958785 by abramm: ContextDefinition isSatisfiedBy() check fails for context using inherited class

Issue #2926633 by alexpott, dawehner, Mile23, mglaman, Wim Leers, jibran, larowlan, Lendude, Berdir: Provide a script to install a Drupal testsite

Issue #2869916 by johndevman, tstoeckler, borisson_, larowlan: SiteConfigureForm ignores 'skip_permissions_hardening' setting

Issue #2899051 by drunken monkey: Properly document possible exceptions for EntityTypeManagerInterface::getStorage()

Issue #2951242 by alexpott, amateescu, bmunslow, Berdir, greg606, donaldp: Allow BaseFieldDefinition::setInitialValueFromField() to set a default value - this fixes issues with block_content_update_8400()

Issue #2839089 by hchonov, anmolgoyal74, leolando.tan, arunkumark, tstoeckler: $storage->load()->getTranslation('non-default')->getTranslation('default') initializes three entity objects instead of only two

Issue #2895097 by FeyP, borisson_: Correct bundle info service interface name in EntityManager deprecation messages

Issue #2952962 by tim.plunkett, sureshcj, JordiK, Madis, cilefen: Block visibility setting tab for Roles not showing

Issue #2401797 by John Cook, larowlan, Jo Fitzgerald, dawehner, alexpott, Mile23, kim.pepper, phenaproxima, borisson_, andypost, voleger: Introduce a batch builder class to make the batch API easier to use

This reverts commit 7d0b699e.

Issue #2743931 by aaronbauman, gambry, harsha012, joachim, acbramley, rackberg, koryp, DedMoroz, akalam, Yogesh Pawar, alexpott, alexej_d, larowlan, stefan.r, unstatu, sathish.redcrackle: Saving to the private tempstore doesn't start a session for anonymous users

SA-CORE-2018-002 by Jasu_M, samuel.mortenson, David_Rothstein, xjm, mlhess, larowlan, pwolanin, alexpott, dsnopek, Pere Orga, cashwilliams, dawehner, tim.plunkett, drumm

Issue #2945184 by samuel.mortenson: Third argument passed to hook_menu_local_tasks_alter is undocumented