migrations Interfaces, Classes, Traits and Enums defaultAll Default migration migration Migration base class v510a1 Migration to v5.1.0-a1 v520b4 Migration to v5.2.0-b4 v520rc3 Migration to v5.2.0-rc3 v520rc5 Migration to v5.2.0-rc5 migration Module migration base class v521rc1 Migration to v5.2.1-rc1