Issue #3426309 by Wim Leers, smustgrave: Add config validation for weights (blocks, filters, etc. all use weights)

Issue #3341682 by Wim Leers, phenaproxima, borisson_, catch, alexpott: New config schema data type: required_label

Issue #2920678 by phenaproxima, Wim Leers, dawehner, Gogowitsch, Sam152, dww, longwave, yogeshmpawar, alexpott, borisson_, tstoeckler, jibran, amateescu, larowlan, tedbow: Add config validation for the allowed characters of machine names

Issue #3112452 by lalitware, guilhermevp, narendra.rajwar27, WagnerMelo, ravi.shankar, mradcliffe, adalbertov, himanshu_sindhwani, quondam, Vidushi Mehta, alexpott, longwave, anmolgoyal74: Fix indentation consistency in core's yaml files

Issue #2787873 by claudiu.cristea, jibran, amateescu, catch, dawehner, cilefen, xjm, larowlan, vaplas: Add a base class for entity reference selection handlers and fix the structure of their configuration

Revert "Issue #2787873 by claudiu.cristea, amateescu, jibran, dawehner, catch: Add a base class for entity reference selection handlers and fix the structure of their configuration"

This reverts commit b0900c73.

Issue #2787873 by claudiu.cristea, amateescu, jibran, dawehner, catch: Add a base class for entity reference selection handlers and fix the structure of their configuration

Issue #2634156 by dpi, jian he, dawehner: Missing configuration schema and tests for "user_current" views filter handler

Issue #2623568 by yanniboi, claudiu.cristea, himanshugautam, anil280988, sidharthap, Sagar Ramgade: Config schema of argument_default plugins is incorrect

Issue #2625696 by chx, benjy, alexpott, catch, mikeryan, andypost, phenaproxima: Make migrations themselves plugins instead of config entities

Revert "Issue #2625696 by chx, alexpott, benjy, mikeryan, andypost, phenaproxima: Make migrations themselves plugins instead of config entities"

This reverts commit 694994fe.

Issue #2625696 by chx, alexpott, benjy, mikeryan, andypost, phenaproxima: Make migrations themselves plugins instead of config entities

Issue #2633308 by dawehner, mparker17, Wim Leers, Fabianx: Views cache contexts are lost (and thus do not bubble) when rendering a view's block display

Issue #2414651 by phenaproxima, quietone, miguelc303, mikeryan, benjy: Migration Files for Drupal 7 Users

Issue #2534042 by mikeryan, phenaproxima: Move module-specific migration support into the user module

Issue #2322949 by plach, kgoel, Berdir, fgm, damiankloip, dawehner: Implement generic entity link view field handlers

Issue #2454145 by kgoel, dawehner, adamwhite, rteijeiro, wwhurley: Replace user_name handler with Field API formatter

Issue #2456691 by YesCT, andypost, dawehner, rteijeiro: User email field need to use Field-Entity-aware formatters in Views

Issue #2459971 by Gábor Hojtsy: The langcode key on configuration files is not explicit in configuration schema

Issue #2436835 by amateescu, alexpott: Unable to create config schema for entity type specific entity reference selection plugin

Issue #2384863 by Gábor Hojtsy, vijaycs85, rodrigoaguilera: Translation language base field handler should use views field handler, provide unified options

Issue #2435075 by dawehner: Implement admin role as a flag on the role storage, simplify permissions page, remove user_modules_installed

Issue #2248977 by Berdir: Complete support for multi-value base fields in ContentEntitySchemaHandler and use it for the user.roles field

Issue #2325269 by Gábor Hojtsy, Arla: Test and fix views in test_views directories against their configuration schema

Issue #2381973 by Gábor Hojtsy, vijaycs85, dawehner: View wizard creates 'invalid' views out of the box, missing plugin_ids, insecure permissions

Issue #2379683 by Gábor Hojtsy: Fix configuration schema issues in contact (indirectly user and system) modules

Issue #1182850 by xjm, Stefan Lehmann, jmcintyre, Bojhan: Remove full stops at the end of checkbox options.

Issue #2285189 by Jose Reyero, Gábor Hojtsy: Fixed Undefined config schema type should not be explicitly used in config schemas.

Issue #2293063 by Gábor Hojtsy: Fixed Config schema mapping parsing is inconsistently forgiving, does not conform to the interface.

Issue #2256679 by alexpott, tim.plunkett: Fixed Use config schema to determine which config entity properties to export regardless of whether they are public or protected.

Issue #2283929 by tim.plunkett: Clean up condition plugins to have schema support and to allow them to be optional.

Issue #950534 by mparker17, mgifford, Mixologic, jbloomfield, erinclerico, theMusician, wmostrey | zirvap: [policy] Consistently use email instead of e-mail in Drupal.

Issue #2266501 by Gábor Hojtsy, vijaycs85, YesCT: Array level schema errors are not reported, fix wrong schemas identified.