New candidate JEP: 468: Derived Record Creation (Preview)

[Mark Reinhold]

https://openjdk.org/jeps/468

  Summary: Enhance the Java language with derived creation for
  records. Records are immutable objects, so developers frequently create
  new records from old records to model new data. Derived creation
  streamlines code by deriving a new record from an existing record,
  specifying only the components that are different. This is a preview
  language feature.

- Mark