Issue #2380389 by webflo, Mile23, davidwbarratt, timmillwood, hussainweb, tstoeckler, bojanz, yched, MKorostoff, alexpott, webchick: Use a single vendor directory in the root

Issue #2064191 by yched, claudiu.cristea: Fix the 'target_bundle' field setting - 'target_bundles' are not validated when entity_reference is enabled

Issue #2571499 by benjy, mikeryan, phenaproxima: idMap source and destination id filtering requires keys

Issue #2573895 by johnstorey, phenaproxima, svendecabooter, benjy: ConvertTokens.php cannot handle NULL values

Issue #2575495 by webflo, Mile23, hussainweb: Invalidate APCu Class Loader automatically if necessary

Issue #2295255 by dawehner, tstoeckler, k4v, kgoel: Convert ConfigMapperInterface::populateFromRequest() to use RouteMatch

Revert "Issue #2570681 by juanse254, AndreaD, giancarlosotelo, lucastockmann, edurenye: when admin toolbar-oriented vertically a div is over the options"

This reverts commit 2acfed87.

Issue #2563801 by rashid_786, sdstyles, keopx, joshi.rohit100, Mile23, lachezar.valchev, NikhilValand: Remove usage of menu_test_theme_page_callback()

Issue #2476947 by mdrummond, Wim Leers, davidhernandez, lauriii, joelpittet, andypost, Cottser, JeroenT, Manuel Garcia, rpayanm: Convert "title" page element into a block

Issue #2572537 by pguillard, a.milkovsky, manauwarsheikh, Eli-T, phantomvish, ifrik, yoroy: Update the UI texts for the Configuration Manager module

Issue #2549077 by pwolanin, Wim Leers, phenaproxima, lauriii: Allow the "Limit allowed HTML tags" filter to also restrict HTML attributes, and only allow a small whitelist of attributes by default

Issue #2570541 by mikeryan, phenaproxima: Track simple configuration migrations like normal migrations

Issue #2570681 by juanse254, AndreaD, giancarlosotelo, lucastockmann, edurenye: when admin toolbar-oriented vertically a div is over the options

Issue #2570431 by stefan.r, YesCT, David_Rothstein, xjm, catch, effulgentsia, Heine, dawehner, plach, lauriii, alexpott, joelpittet: Document that certain (non-"href") attribute values in t() and SafeMarkup::format() are not supported and may be insecure

Revert "Issue #2570431 by stefan.r, YesCT, David_Rothstein, xjm, catch, effulgentsia, Heine, dawehner, plach, lauriii, alexpott, joelpittet: Document that certain (non-"href") attribute values in t() and SafeMarkup::format() are not supported and may be insecure"

This reverts commit 4d8e0102.

Issue #2570431 by stefan.r, YesCT, David_Rothstein, xjm, catch, effulgentsia, Heine, dawehner, plach, lauriii, alexpott, joelpittet: Document that certain (non-"href") attribute values in t() and SafeMarkup::format() are not supported and may be insecure

Issue #2348747 by Manuel Garcia, joelpittet, lauriii, lokeoke, bbujisic, roderik: Convert theme_views_view_fields() to 100% Twig: remove the theme function

Issue #2361093 by mikeryan, dawehner, Devin Carlson, benjy, phenaproxima: Add a rollback functionality to migrate

Issue #2574917 by andrewmacpherson, googletorp: Regression: vertical tabs are not keyboard accessible

Issue #2558189 by JeroenT, pwolanin, Cyberschorsch, SteffenR, Mile23: Remove usage of deprecated UrlGeneratorInterface::generateFromPath() in system module

Issue #2404331 by larowlan, jibran, amateescu, RavindraSingh: Can't serialise an entity with an entity reference to an unsaved entity (remove EntityReferenceItem::$NEW_MARKER in favour of a validation constraint)

Issue #2554267 by asgorobets, justAChris, LoMo: Clean Environment button on Simpletest UI should not run test even if tests are selected

Issue #2543580 by harjotsingh, xq1003, kjay, longwave, jhodgdon, webchick: Post-install message referrs to "handbook" and links to irrelevant page

Issue #2575493 by Berdir, dawehner: Remove string cast of EntityType::getLabel() and getGroupLabel()

Issue #2571695 by dawehner, plach, stefan.r, jaredsmith, lauriii, YesCT, xjm, catch, alexpott, joelpittet, Ryan Weal, Sutharsan, subhojit777, justAChris, nlisgo, effulgentsia, rpayanm, larowlan, chx, geertvd: Remove !placeholder and unsafe string return from SafeMarkup::format()

Issue #2573667 by k4v, YesCT, plach, dawehner, othermachines: Entity uninstallation does not clean up field schema data in state properly