Issue #2882717 by Wim Leers, dawehner: EntityResourceTestBase: assert that PATCHed and POSTed entities contain the intended values

Issue #2846554 by Berdir, tedbow, amateescu, dawehner, himanshu-dixit, Wim Leers, badrange, damiankloip, catch: Make the PathItem field type actually computed and auto-load stored aliases

Issue #2768651 by damiankloip, Wim Leers, mpdonadio, Munavijayalakshmi, Jo Fitzgerald, jhedstrom: Let TimestampItem (de)normalize to/from RFC3339 timestamps, not UNIX timestamps, for better DX

Issue #2751325 by damiankloip, Grayside, dawehner, Wim Leers, catch, tedbow, alexpott, himanshu-dixit, Jo Fitzgerald, xjm, andrewbelcher, skyredwang, effulgentsia, hampercm, eelkeblok: All serialized values are strings, should be integers/booleans when appropriate

Issue #2808335 by hchonov, tstoeckler, anish.a, Wim Leers, catch, Berdir: Changed time not updated when only non-translatable fields are changed on a translated entity

Issue #2808233 by gnuget, dawehner, Wim Leers, tedbow, Chi, dysrama: REST 403 responses don't tell the user *why* access is not granted: requires deep Drupal understanding to figure out

Issue #2737719 by Wim Leers, dawehner: EntityResource: Provide comprehensive test coverage: for every entity type, every format, every method

Revert "Issue #2737719 by Wim Leers, dawehner: EntityResource: Provide comprehensive test coverage: for every entity type, every format, every method"

This reverts commit 59781ffc.

Issue #2737719 by Wim Leers, dawehner: EntityResource: Provide comprehensive test coverage: for every entity type, every format, every method