This reverts commit 7c486399.

Issue #2488860 by alexpott, dawehner, catch, Mile23, jgeryk, claudiu.cristea, daffie, jibran: Bring phpunit bridge into drupal and use it for unit tests and simpletest to handle Deprecation

Issue #2712647 by slasher13, klausi, catch, jibran, Manuel Garcia, alexpott, mpdonadio, naveenvalecha, neclimdul, timmillwood, webflo, dawehner, Wim Leers, pounard: Update Symfony components to ~3.2

Issue #2853201 by hampercm, dawehner: [upstream] CORS breaks form submission unless allowed origins includes site's own host

Issue #2866109 by Eric_A: Add composer installer-paths for drupal-custom-modules/themes before 8.3.0

Issue #2863411 by alexpott: Adding symfony/dom-crawler with a version limit like ">=2.8.13 <3.0" is problematic

SA-CORE-2017-001 by alexpott, benjy, Berdir, casey, cilefen, dawehner, Heine, klausi, larowlan, Mixologic, mlhess, pwolanin, samuel.mortenson, Wim Leers, xjm, YesCT

Issue #2803779 by pfrenssen, klausi, Mile23, alexpott, dawehner: Update Coder to 8.2.10 and fix errors from improved sniffs

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

This reverts commit 30de60c0.

Revert "Issue #2712647 by klausi, catch, slasher13, jibran, Manuel Garcia, alexpott, naveenvalecha, neclimdul, dawehner, Wim Leers, pounard: Update Symfony components to ~3.1"

This reverts commit a55b8ef1.

Issue #2712647 by klausi, catch, slasher13, jibran, Manuel Garcia, alexpott, naveenvalecha, neclimdul, dawehner, Wim Leers, pounard: Update Symfony components to ~3.1

Issue #2808085 by klausi, claudiu.cristea, stof, nicolas.grekas: Pipe char in locators break Mink and Symfony element search

Issue #2763787 by pwolanin, nerdstein, rlhawk, YesCT, slasher13, tuutti, alexpott, therealssj, TravisCarden, dawehner, maximpodorov, klausi, catch, talhaparacha, Eric_A: Upgrade random_compat to latest version

Revert "Issue #2763787 by nerdstein, rlhawk, slasher13, therealssj, TravisCarden: Upgrade random_compat to latest version"

This reverts commit 7feb65ba.

Issue #2763787 by nerdstein, rlhawk, slasher13, therealssj, TravisCarden: Upgrade random_compat to latest version

Issue #1869548 by dawehner, jeqq, dmouse, slasher13, damiankloip, alexpott, nod_, AlxVallejo, chr.fritsch, yanniboi, effulgentsia, dixon_, -enzo-, Wim Leers, Crell, andypost, catch, Damien Tournoud, kim.pepper, linclark: Opt-in CORS support

Revert "Issue #1869548 by dawehner, jeqq, dmouse, damiankloip, nod_, AlxVallejo, chr.fritsch, yanniboi, effulgentsia, dixon_, -enzo-, Wim Leers, Crell, Damien Tournoud, andypost, kim.pepper, linclark, catch: Opt-in CORS support"

This reverts commit f2b71152.