Exception thrown if no data updated

[ElGigi]

Atlas.Table/src/Table.php

Line 206 in 4c82ae7

throw Exception::unexpectedRowCountAffected($rowCount);

Why thrown an exception if no data updated in a record?
If original record it's the same as persisted record, it's more judicious to do not perform an update instead thrown an exception.

Especially since this is a problem when you save changes only in child records.
Cf: atlasphp/Atlas.Transit#17