Issue #3425875 by Wim Leers, phenaproxima, smustgrave: Add validation constraints to search.settings

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

Issue #3332593 by phenaproxima, Wim Leers, borisson_, lauriii, tim.plunkett: Adopt PluginExists validator in relevant places

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 #3067943 by andypost, jhodgdon, Amber Himes Matz, pwolanin: Add capability for search blocks on non-default search

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

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 #733054 by jhodgdon, mkalkbrenner, amitgoyal, ndewhurst: Fixed Watchdog logging of all searches is performance hit; need ability to turn it off.

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 #2233787 by alexpott, xjm | tim.plunkett: Move default configuration into extension/config/install to clarify its purpose.

Issue #2080823 by alexpott, swentel, Wim Leers: Create API to discover content or config entities' soft dependencies and use this to present a confirm form on module uninstall.

Issue #2167623 by danilenko_dn, sidharthap, Nitesh Sethia, krishnan.n, aitiba, alexpott, ashwinikumar, Barrett, damiankloip, deepakaryan1988, foxtrotcharlie, ianthomas_uk, neetu morwani, nonsie, piyuesh23, Sharique, sivaji, sushantpaste, swentel, vijaycs85, YesCT: Add test for all default configuration to ensure schema exists and is correct.

Issue #2042807 by tim.plunkett, pwolanin, ianthomas_uk, jhodgdon: Convert search plugins to use a ConfigEntity and a PluginBag.

Issue #2105983 by mr.baileys, jhodgdon, vijaycs85, a_thakur: Make sure all YML files in Search module have no type-casting to string.

Issue #1605290 by amateescu, msonnabaum, Caseledde, damiankloip, beejeebus, catch, Berdir, Wim Leers: Enable entity render caching with cache tag support.

Issue #2003482 by pwolanin, jhodgdon, kim.pepper, Nick_vh, tim.plunkett, jibran, Berdir, effulgentsia, alexpott: Convert hook_search_info() to plugin system.

Issue #1496510 by swentel, jvns, cosmicdreams, marcingy, alexpott, heyrocker, sun: Convert search settings to configuration system.