[GHC] #13181: Introduce GHC.TypeNats module with natVal

[GHC]

#13181: Introduce GHC.TypeNats module with natVal
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        Reporter:  phadej            |                Owner:  phadej
            Type:  feature request   |               Status:  patch
        Priority:  normal            |            Milestone:  8.2.1
       Component:  Compiler          |              Version:
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D3024
       Wiki Page:                    |
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"1fcede43d2b30f33b7505e25eb6b1f321be0407f/ghc"
 1fcede43/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="1fcede43d2b30f33b7505e25eb6b1f321be0407f"
 Introduce GHC.TypeNats module, change KnownNat evidence to be Natural

 Reviewers: dfeuer, austin, hvr, bgamari

 Reviewed By: bgamari

 Subscribers: thomie

 Differential Revision: https://phabricator.haskell.org/D3024

 GHC Trac Issues: #13181
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13181#comment:2>
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