Added GenericShowFields instances for NoConstructors and NoArguments (#20)

* Added Eq and Show instances to NoArguments and NoConstructors

* Added GenericShowFields

* Removed Show, Eq

* Cleanup

* Removed NoConstructors Show instance

Author: kejace

src/Data/Generic/Rep/Show.purs

@@ -65,6 +65,9 @@ instance genericShowFieldsField
   genericShowFields (Field a) =
     [reflectSymbol (SProxy :: SProxy name) <> ": " <> show a]
 
+instance genericShowFieldsNoArguments :: GenericShowFields NoArguments where
+  genericShowFields _ = []
+
 -- | A `Generic` implementation of the `show` member from the `Show` type class.
 genericShow :: forall a rep. Generic a rep => GenericShow rep => a -> String
 genericShow x = genericShow' (from x)