[GHC] #15028: Deprecate and Remove Data.Semigroup.Option and Data.Monoid.First/Last

[GHC]

#15028: Deprecate and Remove Data.Semigroup.Option and Data.Monoid.First/Last
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        Reporter:  andrewthad        |                Owner:  (none)
            Type:  task              |               Status:  new
        Priority:  normal            |            Milestone:  8.8.1
       Component:  Compiler          |              Version:  8.4.1
      Resolution:                    |             Keywords:  base
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by andrewthad):

 I have opened a PR adding warnings at https://github.com/ghc/ghc/pull/128

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15028#comment:3>
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