[enhanced-enums] a new start?

[Maurizio Cimadamore]

Hi,
I've sent an email to amber-spec-experts few hours ago:

http://mail.openjdk.java.net/pipermail/amber-spec-experts/2018-December/000876.html

The email contains a link to a document which describes a proposal on 
how to put enhanced enums back on track.

Few hours ago I pushed a patch on the amber repo (branch 'enhanced 
enums') which implements the approach described in the document:

http://mail.openjdk.java.net/pipermail/amber-dev/2018-December/003797.html

I've been able to successfully conduct fairly convoluted code 
experiments with it - if you are interested in JEP 301, I suggest you 
fetch the latest change and do the same, and report back on any issue 
you find.

Cheers
Maurizio