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.

Issue #2170085 by Wim Leers, jessebeach: Caption filter may not wrap images that are only aligned, not captioned.

Issue #2015689 by smiletrl, jsacksick, mradcliffe, effulgentsia, nick_daffodil, stevector | swentel: Convert field type to typed data plugin for options module .

Issue #2167507 by andypost, chx, sun, dcrocks: Fix rowCount query usage in pgsql and sqlite drivers.

Issue #2154701 by pfrenssen, Gábor Hojtsy, swentel: Regression: Contextual links broken, tabs erroneously added after enabling content translation module.

Issue #2144919 by yched, fago, effulgentsia, amateescu, tstoeckler, chx, larowlan, swentel: Allow widgets and formatters for base fields to be configured in Field UI.

Issue #2155701 by sun: Installer starts with fatal error/exception 'table 'semaphore' not found' if settings.php contains  already.

Issue #952394 by xjm, webchick, sun, catch: 'No available releases found' - fetching update information exceeds timeout.

Issue #1705618 by nod_, sun, clemens.tolboom, Wim Leers: Double click prevention on form submission.

Issue #2171015 by alexpott: Drupal 8 HEAD broken: installing Language module fails, after that cannot install any other module.

Issue #2166065 by alexpott, mtift: Replace config_install_default_config with ConfigInstaller service.