Issue #3057399 by quietone, Akhil Babu, kristiaanvandeneynde, alexpott, pradhumanjain2311, smustgrave, catch, poker10, longwave, jimafisk, Newb_Druper, robpowell, dpi, tomdewild: Add user_requirements to check for missing anonymous user

(cherry picked from commit 9a6e38c0)

Issue #3319845 by alexpott, larowlan, catch: user_post_update_update_migrated_roles_followup() needs to be a hook_update_N

Issue #3261486 by catch, longwave, dww: Remove core updates added prior to 9.3.0 and adjust test coverage

Issue #838992 by alexpott, Charlie ChX Negyesi, daffie, Damien Tournoud, sun, quietone, longwave: Change the uid field from integer to serial by leveraging NO_AUTO_VALUE_ON_ZERO on MySQL

Issue #3087644 by jibran, Berdir, alexpott, longwave, Wim Leers, amateescu, catch, xjm, larowlan, dpi, quietone: Remove Drupal 8 updates up to and including 88**

Revert "Issue #3087644 by jibran, Berdir, alexpott, longwave, Wim Leers, amateescu, catch, larowlan, dpi, quietone: Remove Drupal 8 updates up to and including 88**"

This reverts commit 136f0550.

Issue #3087644 by jibran, Berdir, alexpott, longwave, Wim Leers, amateescu, catch, larowlan, dpi, quietone: Remove Drupal 8 updates up to and including 88**

Issue #3047866 by mikelutz, Berdir, TR, alexpott, andypost, Satyanarayan Reddy: Remove usage of deprecated \Drupal::entityManager() in core

Issue #2886740 by kiamlaluno: user_schema() reports uid as primary key for the user_data table when it's just part of the primary key

Issue #2776975 by joelpittet, dawehner, tim.plunkett, xjm, pfrenssen: March 3, 2017: Convert core to array syntax coding standards for Drupal 8.3.x RC phase

Issue #2587275 by swentel, Sharique, cilefen, ivanjaros, Dave Reid, Berdir: Invalid token used in user email notification

Issue #2349819 by amateescu, swentel, Leksat, larowlan, dawehner, Gábor Hojtsy, mpdonadio, benjy, jmuzz, yched, jibran, marthinal, dmsmidt: String field type doesn't consider empty string as empty value

Issue #1923406 by stefan.r, yannickoo, catch, Crell, amateescu, pwolanin, morgantocker, Damien Tournoud, sun: Use ASCII character set on alphanumeric fields so we can index all 255 characters

Revert "Issue #1923406 by stefan.r, yannickoo: Use ASCII character set on alphanumeric fields so we can index all 255 characters"

This reverts commit ac4e35ce.

Issue #1923406 by stefan.r, yannickoo: Use ASCII character set on alphanumeric fields so we can index all 255 characters

Issue #2340667 by YesCT, Pedro Lozano, alexpott, martin107: Protect Drupal\Core\Language\Language::id, and use getId().

Issue #2183231 by tstoeckler, plach, jessebeach, fago, Berdir, xjm, mauzeh: Make ContentEntityDatabaseStorage generate static database schemas for content entities.

Issue #2249113 by tstoeckler, jessebeach: Use an entity save instead of db_insert() in user_install().

Issue #2166915 by ianthomas_uk, sun | plach: Remove uses of deprecated language functions in tests and procedural code.

Issue #2168011 by xjm, jessebeach, Damien Tournoud, znerol, Xano: Remove all 7.x to 8.x update hooks and disallow updates from the previous major version.

Issue #2144919 by yched, fago, effulgentsia, amateescu, tstoeckler, chx, larowlan, swentel: Allow widgets and formatters for base fields to be configured in Field UI.

Issue #2074475 by benjy, Gábor Hojtsy: Rename {file_managed}.timestamp to 'changed' and add a created timestamp.

Issue #2148071 by Gábor Hojtsy, philipz, marthinal, penyaskito: Cannot install in foreign language (Undefined index: und in ContentEntityBase->language()).

Issue #2045931 by PerthSam152, LinL, adsw12, joelpittet: Replace all module_exists() deprecated function calls.

This reverts commit cc84f390 - bad
commit message.

Issue #1953528 by swentel, Hydra: Store 'per-bundle view mode settings' in CMI, get rid of field_bundle_settings() & its variable.