# Changelog ## Changes in 3.0 - Renamed ``<RootDevice>``to ``<Device>`` and ``<Device>`` to ``<SubDevice>``, - Added complex data types: *Struct* and *Arrays*. - Simplified the UML diagram. Split the UML diagram into two parts, one for the base elements and one for the data types. - In the UML diagram: Moved ``<extends>`` into the UML ``<ModuleClass>`` element (easier to read). - Added support to specify *Units of Measurement* to data types, - Added ``<Doc>`` to ``<Domain>`` and other elements. - ``<Doc>`` is now always the first part of an element. - Changed ``<DeviceInfo>`` element to a list of ``<Characteristic>``. - Added ``<Characteristic>`` list to ``<Modules>`` and ``<ModuleClasses>``. - The ``<data>`` element in ``<Event>`` is now optional to support events without attached or associated data. - In Actions: Added ``<Args>`` as a surrounding list around a list of ``<Arg>``. - Added *Constraints* to ``<DataType>``. - Added optional *name* attribute to ``<DataType>``. This mandatory for elements of a *struct*. - Restructured the [RNG](SDT/schema3.0/src/domain.rng) file for better readability and maintainability. - In the [RNG](SDT/schema3.0/src/domain.rng)/[XSD](SDT/schema3.0/src/domain.xsd): Changed cardinality of the occurrence of elements that are part of a list of elements (e.g. ``<SubDevices><SubDevice>…</SubDevice></SubDevices>`` from „zero or more“ to „one or more“ when the surrounding list element itself is optional (to avoid empty lists). ## Changes in 2.0.1 - Added missing "uri" data type. ## Changes in 2.0 - Introduced RootDevice to support hierarchical embedded devices. - Added new data types (byte, float, array, enum, date, time, datetime, blob, uri) - Added ``readable`` and ``eventable`` to data points. - Added optional ``<SerialNumber>``, ``<VendorURL>`` and ``<FirmwareVersion>`` elements to DeviceInfo - Added optional ``<Doc>`` element to Event - Changed the optionality of the ``<DataPoint>``'s ``type`` attribute to "required". - Added [UML diagram](SDT/schema2.0/docs/SDT_Components.md) - Changed the namespace for the XSD from "hgi.org" to "homegatewayinitiative.org".