[GHC] #1773: Add Compositor class as superclass of Arrow, in Control.Compositor

[GHC]

#1773: Add Compositor class as superclass of Arrow, in Control.Compositor
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    Reporter:  guest           |        Owner:         
        Type:  proposal        |       Status:  closed 
    Priority:  normal          |    Milestone:  Not GHC
   Component:  libraries/base  |      Version:  6.6.1  
    Severity:  normal          |   Resolution:  fixed  
    Keywords:                  |   Difficulty:  Unknown
          Os:  Unknown         |     Testcase:         
Architecture:  Unknown         |  
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Changes (by guest):

  * status:  new => closed
  * resolution:  => fixed

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1773#comment:2>
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