Comparison of OneOf instances doesn't match python.

[braxtonmckee]

if you have two instances of a OneOf(int, float) and you compare them, we check the type first and then we check the instance values. This doesn't match python, where 1.0 and 1 are equal. We can't normally invoke this behavior because we only get 'OneOf' instances indirectly (say, inside of a TupleOf). But we should still be mirroring python's behavior which is to call the comparison operator on the actual instances. This is actually quite a bit of work because we have totally separate pathways for this when you are comparing to a python value.

As an example, TupleOf(OneOf(int, float))((1.0,)) won't compare correctly to TupleOf(OneOf(int, float))((1,)) even though (1.0,) == (1,).