SpyOpReturnInOrder is a mix between SpyOpReturn and

SpyOpMatchInOrder. It takes a list of values, and will return a value

for each call made, in the order provided. If a call once the list is

exhausted, an exception will be raised.
SpyOpRaiseInOrder is the SpyOpRaise equivalent. It will raise

exceptions in order.

All unit tests pass in Python 2 and 3.