Issue #1988426 by damiankloip, linclark: Support deserialization of file entities in HAL.
Issue #2171683 by sun, tstoeckler, larowlan: Remove all Simpletest overrides and rely on native multi-site functionality instead.
Issue #2147153 by dawehner, alexpott, Xano: Replace the last instance of $_GET/$_POST; Create a special exception listener / exception controller which allows to use POST requests.
Issue #2002168 by klausi, Github sync, effulgentsia: Convert form validation of terms to entity validation.