Issue #2175017 by tim.plunkett, yched: FieldDefinition::create() doesn't populate default 'settings' for the field type.

Issue #2168333 by tim.plunkett, EclipseGc, yched, fago: Ensure custom EntityType controllers can be provided by modules.

Issue #2102489 by webwarrior, InternetDevels: Remove drupal_set_title in views module controllers (last instance of drupal_set_title()).

Somehow this broke PHPUnit, so rolling back for now.

This reverts commit 91b465bd.

Issue #1862202 by plach, Berdir, katbailey, ParisLiakos, alexpott, chx, sun, larowlan, Gábor Hojtsy, cosmicdreams, vijaycs85, YesCT, penyaskito, andypost, Albert Volkman, joelpitett: Objectify the language system.

Issue #1649780 by effulgentsia, jibran, Wim Leers, nod_, hefox, joelpittet, kaare, BarisW, sun, rbayliss, Cottser, fubhy: Remove first/last/odd/even classes in favor of CSS3 pseudo selectors.

Issue #2164597 by longwave, StephaneQ, emok: Doxygen @return tag missing for drupal_render_children.

This caused a conflict in the language objectification patch. Postponing.

This reverts commit 9e017ada.

Issue #2161763 by Wim Leers, sun: Remove unnecessary drupalSettings.editor.getUntransformedTextURL setting.

Issue #2171759 by amateescu: Drupal\Core\Field\ConfigFieldItemList tries to use an inexistent FieldInstanceInterface.

Issue #2144879 by Wim Leers, yched: Brush up MetadataGeneratorInterface::generate(Field|Entity)(): use FieldItemListInterface + better naming.

Issue #2170991 by Xano: Migrate provides invalid arguments when invoking hooks/type hint array arguments in ModuleHandlerInterface.

Issue #1987716 by pfrenssen, tim.plunkett, kgoel: Provide a FormTestBase class to allow PHPUnit form tests.

Issue #2161727 by jrockowitz, damiankloip, dawehner: Views that use fields with long names (ie 32 characters) will throw a show-stopping error.

Issue #2171737 by vijaycs85, Wim Leers, claudiu.cristea: Regression: Draggable table broken on image style form.