Bump cabal-version to 1.10 (required by Hackage)

Author: andreasabel

shelltestrunner.cabal

@@ -1,4 +1,4 @@
-cabal-version:  >= 1.8
+cabal-version:  >= 1.10
 name:           shelltestrunner
 -- keep shelltest.hs synced:
 version:        1.10
@@ -54,6 +54,7 @@ extra-source-files:
   tests/format3/one-failing-test
 
 executable shelltest
+  default-language: Haskell2010
   ghc-options: -threaded -W -fwarn-tabs
   main-is: shelltest.hs
   hs-source-dirs: src