This reverts commit 7c486399.

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 #1920902 by neclimdul, larowlan, alexpott, chx, sun, jthorson, damiankloip, Berdir, Mixologic, YesCT, hussainweb, rcaracaus, cweagans, catch, jibran, msonnabaum, dawehner, webchick, anavarre, heyrocker: Add a Drupal Yaml wrapper so we can default to PECL Yaml component if it is available

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

Issue #2337283 by hussainweb, Mile23, alexpott, aleksip, dawehner, heykarthikwithu, naveenvalecha, Crell, xjm, davidwbarratt, Fabianx, jhedstrom, tim.plunkett, larowlan, tstoeckler: Add a composer.json file to every component

Issue #2395143 by amateescu, Fabianx, Berdir, beejeebus, dashaforbes, alexpott, larowlan, znerol, dawehner, catch, neclimdul, yched, fgm, effulgentsia: YAML parsing is very slow, cache it with FileCache

Revert "Issue #2395143 by amateescu, Fabianx, Berdir, beejeebus, dashaforbes, larowlan, dawehner, catch, alexpott, neclimdul, yched, znerol, fgm, effulgentsia: YAML parsing is very slow, cache it with FileCache"

This reverts commit 4192117d.

Issue #2395143 by amateescu, Fabianx, Berdir, beejeebus, dashaforbes, larowlan, dawehner, catch, alexpott, neclimdul, yched, znerol, fgm, effulgentsia: YAML parsing is very slow, cache it with FileCache

Issue #2295469 by Cottser, dawehner | effulgentsia: Add support for static permission definitions with *.permissions.yml.

Issue #2067809 by Berdir, damiankloip: Fixed YamlDiscovery uses basename of directory instead of module name.