Change the name of the attribute on "per" from "open" to "request".
The old name should still be valid in the relaxed serialization for backward compatibility.
Relax NG Schemas - change content model of per attribute, add the old name to the module that maintains backward compatibility.
Unit Tests - add some test examples using the new name.
Change the name of the attribute on "per" from "open" to "request". The old name should still be valid in the relaxed serialization for backward compatibility.
Dependent on Issue #38