NAC

In Schedule::wireEncode, the fields are encoded in reverse order (as normal), so the RepetitiveInterval iterator should go backwards to put the encoded elements in ascending order. But the iterator goes forward: https://github.com/named-data/ndn-group-encrypt/blob/7cc09fc4e97adcab02731b99efb96eecdf81364b/src/schedule.cpp#L50

Is it your intention that the RepetitiveInterval elements should be encoded in ascending order? Or does the encoding specify and order? (If there is not a defined order, then it's hard to make the unit tests pass because the results will vary from test cases.)