Oops - there is already a similar PR. Nevertheless - leaving it open as the instance is different.

Date is not Generic since it's not a sum of products.

There's been some previous discussion on this, #22. I want to change the representation to just hold the millis, and that way we avoid any weirdness and makes a proper generic instance possible.

You guys are really fast. :-)

@paf31 : Would it make sense to add something like

SigNative String
SNative String

to GenericSignature / GenericSpine ? So we can represent native types?

Use case is for example generic JSON serialization/deserialization. As it currently fails completely if there is a single data type in the chain that has no Generic instance.

The above for JSDate would look something like

SigNative "JSDate"
SNative "2016-03-24T17:02:50.848060000000Z"

Similar instances could be written for all native types which have some string representation.