Cabal revisions of vty-3.1.8.4

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

 Name:                vty Version:             3.1.8.4+x-revision: 1 License:             BSD3 License-file:        LICENSE Author:              Stefan O'Rear  Library {     if impl(ghc>=6.9)-        Build-Depends:       base >= 4 && < 5+        Build-Depends:       base >= 4 && < 4.6     else         Build-Depends:       base < 4     Build-Depends:       extensible-exceptions