This release contains a few bugfixes for rds_cluster.
Bugfixes
rds_cluster - Add AllocatedStorage, DBClusterInstanceClass, StorageType, Iops, and EngineMode to the list of parameters that can be passed when creating or modifying a Multi-AZ RDS cluster (#1657).
rds_cluster - Allow to pass GlobalClusterIdentifier to rds cluster on creation (#1663).