- added release number to all existing @deprecated tag in php classes, methods and properties (app/code/Magento, lib/internal/Magento, setup/src/Magento/Setup)
- added tag @since to all existing php classes, methods and properties (app/code/Magento, lib/internal/Magento, setup/src/Magento/Setup)
- moved admin user password and locking functionality from PasswordManagement to User module
- moved customer password upgrade from PasswordManagement to Customer module
- renamed PasswordManagement module to EncryptionKey to contain the encryption key management code