Issue #2326721 by rpayanm, subhojit777, tim.plunkett, Wim Leers, harshil.maradiya, vijaycs85, Xano, Hjarnmastara: EditorPluginInterface should extend PluginFormInterface

Issue #2713923 by NickWilde, markdorison: A Few attributes/new Attribute() calls use strings instead of array for classes

Issue #2666032 by hchonov, Gábor Hojtsy, mkalkbrenner: Add TranslationStatusInterface to ask for the status of an entity translation and fix statuses in ContentEntityBase

Issue #2752463 by tstoeckler: EntityResolverManager::setParametersFromEntityInformation() sets parameter info for non-existing parameters

Issue #2809789 by pwolanin, dawehner: UrlGenerator fails to urlencode aliases, incorrectly encodes "system" path

Issue #2640842 by heddn, quietone, juancasantito, JoshOrndorff: Make related file migration ID configurable in d6_cck_file

Issue #2818799 by claudiu.cristea: MigrateSkipRowException  being TRUE, does not skip silently as should

Issue #2784951 by Shashwat Purav, er.pushpinderrana: Comment contains a reference to a function that doesn't exist anymore

Issue #2807871 by phenaproxima, svendecabooter: Convert Book's Migrate source tests to new base class

Issue #2807855 by phenaproxima, maijs, svendecabooter: Convert Block's Migrate source tests to new base class

Issue #2807509 by phenaproxima, quietone: Convert Aggregator's Migrate source tests to new base class

Issue #2807905 by svendecabooter: Convert Menu_link_content's Migrate source tests to new base class

Issue #2811133 by cilefen, Wim Leers, neclimdul, dawehner: Confusing error response set by ContentTypeHeaderMatcher when forgetting the Content-Type request header

Issue #2817565 by Sam152: Bugs in ModerationStateFieldItemList mean it can never be used with a field formatter

Issue #2753741 by Wim Leers, dawehner, znerol: Page Cache caches all safe HTTP methods (GET+HEAD), but generates the same cache ID for either: add test coverage to prove this is correct

Issue #2527324 by Kartagis, naveenvalecha: The install message referencing insufficient PDO drivers links to the wrong documentation page

Issue #2603236 by dbazuin, Pepino710, lomasr, tomgilissen, criscom, alimac, yoroy, Sutharsan, ifrik, BarisW, YesCT, xjm: Improvement help text Recipient field

Revert "Issue #2811133 by Wim Leers, neclimdul, dawehner: Confusing error response set by ContentTypeHeaderMatcher when forgetting the Content-Type request header"

This reverts commit 97f0d43d.

Issue #2811133 by Wim Leers, neclimdul, dawehner: Confusing error response set by ContentTypeHeaderMatcher when forgetting the Content-Type request header