In this version we disabled by default support for XEP-0091: Legacy Delayed Delivery. This decision was made due to the fact that usage of XEP-0091 is not recommended any more and should be used only for backward compatibility. Moreover, it added overhead to each transmitted message sent from MUC room history, while the same information was already available in XEP-0203: Delayed Delivery format. For more information see Enabling support for XEP-0091: Legacy Delayed Delivery
