PROPOSAL: Abstract enums (version 2)

[Howard Lovatt]

Derek,

I have found also wanted to extend an abstract class when using enums.
However I ideally didn't want to extend a special enum abstract class, e.g.

abstract enum Super { ... } // Has enum

enum extends Super { ... }

But rather any old abstract class:

abstract class Super { ... } // No enum

enum extends Super { ... }

What is the rational for only allowing abstract enum to be extended rather
than a plain abstract class.

 -- Howard.