Wrong method signatures for update() and delete() in Version 1.3.5

[ergo70]

In Version 1.3.5 update(oldvalues, newvalues) and delete(oldvalues) behave like update(rowid, newvalues) and delete(rowid), with rowid coming from the rowid_column() property. This is also shown wrong in the latest API documentation: https://multicorn.readthedocs.io/en/latest/api.html