Cabal revisions of graphviz-2999.18.1.2

Hackage metadata revisions edit the .cabal file after upload; each diff below is one revision.

 Name:               graphviz Version:            2999.18.1.2+x-revision: 1 Stability:          Beta Synopsis:           Bindings to Graphviz for graph visualisation. Description: {  Library {         Default-Language:  Haskell2010+        other-extensions:  MonadComprehensions -        Build-Depends:     base == 4.*,+        Build-Depends:     base >=4 && <4.11,                            containers,                            process,                            directory,