Major Description
P deserialization seems to expect List arguments for collection oriented operators like within and outside so P.without("x") should wrap "x" in a List for serialization purposes. This causes weirdness in some GLVs. For example in .NET we see that the use of P.without("x") fails to deserialize the bytecode, but {{P.Without(new List<string>
{"x"})}} will work fine. Just need to get this all straight and consistent.
