Get the values of multiple Attributes and their history.
If the names parameter is not given, all the attributes of the Functionality
are returned. As the list may be huge, this must be avoided.
If the to parameter is set, from must also be set.
If from is not set, only the last value is returned.
The surround parameter allows to ask also for one value beyond each interval boundaries.
The request may fail if too many values are asked.