[haskeline] #119: Bump mtl dependency

[haskeline]

#119: Bump mtl dependency
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Reporter:  khudyakov  |       Owner:     
    Type:  defect     |      Status:  new
Priority:  major      |   Milestone:     
 Version:             |    Keywords:     
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 mtl 2.1.1 is released but haskeline require mtl<2.1. Please bump
 dependency

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Ticket URL: <http://trac.haskell.org/haskeline/ticket/119>
haskeline <http://example.org/>
My example project