Jacques Lucke
3a254b93fd
Previously, the span returned by `WriteAttribute`s might not contain the current value of the attribute for performance reasons. To avoid some bugs, the span now always contains the old values (they might have to be copied over from the internal storage, dependending on how the attribute is stored). The old behavior is still available with the `get_span_for_write_only` method. The span that it returns might not contain the current attribute values. Therefore, it should only be used when you want to overwrite an attribute without looking at the old values.