Issue #2849669 by alexpott, pwolanin, Munavijayalakshmi, dawehner: Fix \Drupal\Component\Utility\Unicode() because of the Symfony mbstring polyfill

Issue #2756519 by ZeiP, timmillwood, xjm, mradcliffe, dawehner, joelpittet, Antti J. Salminen: Convert assertIdentical() to assertSame() for some uses in kernel tests that already have assertSame()'s parameter order

Issue #2776975 by joelpittet, dawehner, tim.plunkett, xjm, pfrenssen: March 3, 2017: Convert core to array syntax coding standards for Drupal 8.3.x RC phase

Issue #2665992 by alexpott, klausi, heykarthikwithu, xjm, tstoeckler: @file is not required for classes, interfaces and traits

Issue #2641604 by Mac_Weber, lluvigne, heykarthikwithu: Replace deprecated usage of  entity_create('node_type') with a direct call to NodeType::create()

Issue #2429191 by claudiu.cristea, amateescu, yched, nlisgo, Berdir, alexpott, klausi, Wim Leers, xjm, catch: Deprecate entity_reference.module and move its functionality to core

Issue #2487588 by YesCT, Leksat, Schnitzel, alexpott, anavarre, xjm: Move CMI import/export directory "staging" to "sync", as it is confused with staging environments

Issue #2090115 by alexpott, xjm: Don't install a module when its default configuration has unmet dependencies

Issue #2322639 by hussainweb, LinL, Temoor, oenie, MKorostoff, mglaman, kyuubi, unstatu, omers, pcambra, legolasbo, benjy, JeroenT: Replace all instances of node_type_load(), node_type_get_types(), entity_load('node_type') and entity_load_multiple('node_type') with static method calls from DRUPAL SOUTH WOOOO!

Issue #2347999 by Mile23, daffie, cs_shadow, cosmicdreams: DrupalUnitTestBase is deprecated, replace with KernelTestBase

Issue #2324055 by dawehner, cilefen, znerol: Split up the module manager into runtime information and extension information

Issue #2321385 by alexpott, bircher, amateescu, swentel, benjy: Fixed Creation of node body field in postSave() incompatible with default config and overrides.

Issue #1426804 by alexpott, swentel: Fixed Allow field storages to be persisted when they have no fields.

Issue #2271419 by alexpott, larowlan: Fixed Allow field types, widgets, formatters to specify config dependencies.

Issue #2312093 by alexpott, yched, andypost, swentel | xjm: Rename FieldInstanceConfig to FieldConfig.

Issue #697760 by sun: Replace getInfo() in tests with native phpDoc + annotations (following PHPUnit).

Issue #2183231 by tstoeckler, plach, jessebeach, fago, Berdir, xjm, mauzeh: Make ContentEntityDatabaseStorage generate static database schemas for content entities.

Issue #2124535 by Berdir, alexpott, Désiré, xjm | yched: Prevent secondary configuration creates and deletes from breaking the ConfigImporter.

Issue #1808248 by alexpott, beejeebus, tayzlor, Nitesh Sethia: Add a separate module install/uninstall step to the config import process.

Issue #2224873 by alexpott: Handle a config entity with the same name but different UUID being imported.