bump cabal version for ghc 7.10 compatibility [ci skip]
bump cabal version for ghc 7.10 compatibility [ci skip]

abakst/liquidhaskell,spinda/liquidhaskell,Kyly/liquidhaskell,Kyly/liquidhaskell,mightymoose/liquidhaskell,Kyly/liquidhaskell,spinda/liquidhaskell,rolph-recto/liquidhaskell,mightymoose/liquidhaskell,abakst/liquidhaskell,abakst/liquidhaskell,Kyly/liquidhaskell,rolph-recto/liquidhaskell,abakst/liquidhaskell,mightymoose/liquidhaskell,mightymoose/liquidhaskell,abakst/liquidhaskell,abakst/liquidhaskell,mightymoose/liquidhaskell,Kyly/liquidhaskell,rolph-recto/liquidhaskell,rolph-recto/liquidhaskell,spinda/liquidhaskell,rolph-recto/liquidhaskell,spinda/liquidhaskell,Kyly/liquidhaskell,mightymoose/liquidhaskell,rolph-recto/liquidhaskell,spinda/liquidhaskell,spinda/liquidhaskell