[GHC] #10365: Implement Semigroup as a superclass of Monoid Proposal (Phase 1)

[GHC]

#10365: Implement Semigroup as a superclass of Monoid Proposal (Phase 1)
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        Reporter:  gidyn             |                Owner:  quchen
            Type:  feature request   |               Status:  patch
        Priority:  high              |            Milestone:  8.0.1
       Component:  libraries/base    |              Version:  7.10.1
      Resolution:                    |             Keywords:  report-impact
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D1284
       Wiki Page:                    |
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Comment (by Herbert Valerio Riedel <hvr@…>):

 In [changeset:"8f02baac9ea3d8cf8dfbadd2bc3af799ddbc0367/ghc" 8f02baa/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="8f02baac9ea3d8cf8dfbadd2bc3af799ddbc0367"
 Remove Data.List.NonEmpty.{words,unwords,lines,unlines}

 This change mirrors the change that occured for the recent
 `semigroups-0.18` release, i.e.

 https://github.com/ekmett/semigroups/commit/7a000212847b0d309892f34e4754a25ddec7100b

 This removal addresses concerns raised in #10365
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10365#comment:29>
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