Issue #2510160 by lostkangaroo, neclimdul, phenaproxima: d6 Imagecache -> d8 Image module migration should be included in core

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

Issue #2357801 by dawehner, amitgoyal: File field default values are not deployable -- use UUIDs for the default file

Issue #2391245 by Gábor Hojtsy, Wim Leers: Resolve remaining misc issues with configuration schema fails

Issue #2370305 by Gábor Hojtsy, yched: Refactor field type configuration schemas for DX, easier to find errors

Issue #2378055 by Gábor Hojtsy: Reorganise config schema for entity_form_display / entity_view_display

Issue #2368349 by Gábor Hojtsy, alexpott: Entity view and form display configuration schemas are too verbose / key ones missing

Issue #2312093 by alexpott, yched, andypost, swentel | xjm: Rename FieldInstanceConfig to FieldConfig.

Issue #2295737 by Gábor Hojtsy, vijaycs85, alexpott: Fixed Not all shipped configuration passes validation even with all modules enabled.

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

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

Issue #2165835 by yched, tstoeckler: Rename EntityDisplay to EntityViewDisplay in accordance with its interface.

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 #2130811 by alexpott, Gábor Hojtsy, vijaycs85, sun, Wim Leers: Use config schema in saving and validating configuration form to ensure data is consistent and correct.

Issue #1973436 by claudiu.cristea, vijaycs85: Provide config schema to field types storage for image module.

Issue #1934498 by attiks, Jelle_S, David_Rothstein, effulgentsia, tstoeckler: Allow the image style 'itok' token to be suppressed in image derivative URLs.

Issue #1847002 by tim.plunkett, effulgentsia, msonnabaum: Move entity type classes from Drupal$provider\Plugin\Core\Entity to Drupal$provider\Entity.

Issue #1964254 by vijaycs85, YesCT | Gábor Hojtsy: Fixed Configuration schemas missing langcode and uuid at places.

Issue #1942134 by sandipmkhairnar | vijaycs85: Fixed Make Image module active config save format match the default yml file.

Rollback of Issue #1937140 by Berdir: image_jpeg_quality logically belongs to image toolkits, so will handle it as part of converting those to plugins.

Issue #1935000 by Gábor Hojtsy, vijaycs85: Fixed Some configuration entities are created as in language unknown.

Issue #1922814 by Berdir, Damien Tournoud, pwolanin, David_Rothstein, Heine, Bèr Kessels: Fixed Denial-of-service vulnerabiility in Image module.

Issue #1914366 by vijaycs85, Gábor Hojtsy, alexpott: Move all configuration schema files into a schema subdirectory.