[Haddock] [haddock] #125: Use nice unicode symbols for keywords

[haddock]

#125: Use nice unicode symbols for keywords
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Reporter:  basvandijk   |        Owner:       
    Type:  enhancement  |       Status:  new  
Priority:  minor        |    Milestone:  2.5.0
 Version:  2.4.2        |   Resolution:       
Keywords:               |  
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Comment(by waern):

 See `--use-unicode`.

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Ticket URL: <http://trac.haskell.org/haddock/ticket/125#comment:3>
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