Issue #2758737 by Mixologic, amateescu, ndf, webflo, Mile23, bojanz: Add a packages.drupal.org to root composer.json

Issue #2744463 by Mile23, dawehner, pfrenssen, joelpittet, tstoeckler, alexpott, klausi: Add phpcs, coder 8.2.8 as --dev requirements for drupal/core

Issue #2585165 by pwolanin, alexpott, tarekdj, geertvd, dawehner, greggles: Don't include vendor test code (especially mink) in the Drupal webroot

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

Issue #2400407 by DuaelFr, webchick, hussainweb, klausi, dawehner, cilefen, catch, kim.pepper, iMiksu, MustangGB: [meta] Ensure vendor (PHP) libraries are on latest stable release

Issue #2406681 by tstoeckler, hussainweb, alexpott, ParisLiakos, almaudoh, tadityar: Add an autoload.php in the repo root to control the autoloader of front controllers

Issue #1975220 by davidwbarratt, tstoeckler, mradcliffe, RobLoach, Mile23, hussainweb: Allow a Composer user to manage Drupal, modules, and PHP dependencies with a custom root composer.json

Issue #2234277 by cilefen, hussainweb, Xano, netlooker, martin107: Composer update (includes security fixes).

Issue #2267551 by jfhovinne, ParisLiakos, catch: PHP 5.4.5 needed to avoid zend failure when using autoloaded traits.

Issue #2313669 by dawehner, hussainweb, pfrenssen: Bring in egulias/EmailValidator for RFC compliant email address validation.

Issue #2303673 by dawehner, damiankloip, effulgentsia, Fabianx: Implement stackphp; cleanup handlePageCache() and preHandle()

Issue #2316537 by dawehner | chx: Upgrade symfony CMF to 1.2, remove deprecated parameters from getRouteByName* .

Issue #2073811 by dawehner, pwolanin, joelpittet, Cottser, Mark Carver, steveoliver: Add a url generator twig extension.

Issue #2294439 by dawehner, sun | neclimdul: Add vfsStream library for filesystem mocking in unit tests.

Issue #1959660 by larowlan, pfrenssen, xjm, clemens.tolboom, dawehner, RobLoach: Replace xpath() with WebTestBase::cssSelect() by leveraging Symfony CssSelector.