Issue #2457887 by prateekMehta, stefan.r, rpayanm, alexpott: Use Utility\SafeMarkup class instead of Utility\String for placeholder(), checkPlain(),format() functions

Issue #2371605 by plach, larowlan: SqlContentEntityStorage::countFieldData() fatals for revision metadata fields and the UUID field

Issue #2365965 by er.pushpinderrana, larowlan, Cristian.Andrei, gaurav.pahuja: Various tests still have getInfo method

Issue #2337927 by effulgentsia, plach, fago: Fixed SqlContentEntityStorage::onFieldStorageDefinition(Create|Update|Delete)() is broken for base fields.