Add haddock for Node in Digraph. [skip ci]

Authored by AndreasK on Nov 25 2018, 3:45 PM.

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rGHC Glasgow Haskell Compiler
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AndreasK created this revision.Nov 25 2018, 3:45 PM
bgamari accepted this revision.Nov 30 2018, 11:57 AM

Looks good.

This revision is now accepted and ready to land.Nov 30 2018, 11:57 AM
This revision was automatically updated to reflect the committed changes.