[Haddock] [haddock] #226: Add a mechanism to prune deprecated things

[haddock]

#226: Add a mechanism to prune deprecated things
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Reporter:  SimonHengel  |       Owner:     
    Type:  defect       |      Status:  new
Priority:  major        |   Milestone:     
 Version:  2.11.0       |    Keywords:     
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 Sometimes you want to keep a deprecated function around, but you do not
 want it to clutter the documentation.

 A more general approach would be to allow an optional list of arguments to
 prune, so that functions can be omitted selectively.

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Ticket URL: <http://trac.haskell.org/haddock/ticket/226>
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