HM/JPM: SequentialStorageComponent passes shutdown call on to SequentialMultiStorage
HM/JPM: SequentialStorageComponent now supports a name argument and observable_name method to place nice with labeled method invocation.
JPM/HM: observable_name for SequentialMultiStorage
TS: re-enabled WEIGHTLESS_COMPOSE_TEST="PYTHON"
JPM/HM: IterData only yields keys which are given by oaiJazz; This fixes yielding a lot of records which are already updates in jazz