Issue #2824935 by idebr, mfernea, Deepak Goyal, pfrenssen, longwave, hgunicamp, jofitz, andypost, daffie: Fix Squiz.ControlStructures.SwitchDeclaration coding standard

Issue #3069696 by Berdir, andypost, dhirendra.mishra, longwave, alexpott: Remove BC layers from the entity system

Issue #2572613 by Malevi4, idebr, pfrenssen, Mile23, RajeevK: Fix 'Drupal.Array.Array.CommaLastItem' coding standard

Issue #2702683 by Manuel Garcia, xjm, prics, pguillard, Jo Fitzgerald, vg3095, ztl8702, lucian.cazaciuc, bojanz, tstoeckler, hchonov, rszrama, rteijeiro, svjuly, jibran, vdanielpop, vasike, jmikii, jhodgdon, Wim Leers, amateescu, Gabr1el, Drupa1ish, ciprian.stavovei: Add plural labels to entity types

Issue #2815845 by dawehner, Wim Leers, alexpott, tedbow, Berdir, swentel, webflo: Importing (deploying) REST resource config entities should automatically do the necessary route rebuilding

Issue #2828319 by mradcliffe, Wim Leers, neclimdul: [regression] REST in Drupal 8.2.x does not allow HTTP methods other than GET/PATCH/POST/DELETE: OPTIONS, PUT, et cetera all fail

Issue #2308745 by Alumei, dawehner, Wim Leers, larowlan, Arla, alexpott, g.oechsler, R.Muilwijk, Berdir, catch, klausi, clemens.tolboom, MattA, Crell: Remove rest.settings.yml, use rest_resource config entities