[GHC] #15219: Implement UnliftedNewtypes proposal

[GHC]

#15219: Implement UnliftedNewtypes proposal
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        Reporter:  andrewthad        |                Owner:  (none)
            Type:  task              |               Status:  new
        Priority:  normal            |            Milestone:  8.10.1
       Component:  Compiler          |              Version:  8.4.3
      Resolution:                    |             Keywords:
                                     |  UnliftedNewtypes, GHCProposal
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #1311             |  Differential Rev(s):  Phab:D4777
       Wiki Page:                    |
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Comment (by andrewthad):

 This feature is nearly complete, but it has to wait for 8.10 since the 8.8
 branch has already been cut. At this point, I'm just fixing little
 problems and documenting the implementation better. I'm looking forward to
 having this as well.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15219#comment:13>
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