Merge branch 'dev/refactor' into 'development'

Sources/XXClient/Functors/NewCMix.swift

Sources/XXClient/Functors/NewCMixFromBackup.swift

Sources/XXClient/Functors/NewDummyTrafficManager.swift

Sources/XXClient/Functors/NewGroupChat.swift

Sources/XXClient/Functors/NewOrLoadUd.swift

Sources/XXClient/Functors/NewUdManagerFromBackup.swift

Sources/XXClient/Functors/RegisterForNotifications.swift

Sources/XXClient/Functors/RegisterLogWriter.swift

Sources/XXClient/Functors/RequestRestlike.swift

Sources/XXClient/Functors/RestlikeRequest.swift

Sources/XXClient/Functors/ResumeBackup.swift

Sources/XXClient/Functors/SearchUD.swift

Sources/XXClient/Functors/SetFactsOnContact.swift

Sources/XXClient/Functors/SetLogLevel.swift

Sources/XXClient/Functors/StoreReceptionIdentity.swift

Sources/XXClient/Functors/TransmitSingleUse.swift

Sources/XXClient/Functors/UnregisterForNotifications.swift

Sources/XXClient/Functors/UpdateCommonErrors.swift

Sources/XXClient/Group/Functors/GroupGetCreatedMS.swift

Sources/XXClient/Group/Functors/GroupGetCreatedNano.swift