haskellPackages.tastyAntXml: New expression
haskellPackages.tastyHspec: New expression
haskellPackages.tastyQuickcheck: New expression
haskellPackages.tastyGolden: New expression
haskellPackages.tastyTh: New expression
haskellPackages.tasty*: Add ocharles to the list of maintainers
haskellPackages.smallcheck: Update to 1.1
haskell-language-ecmascript: fix build

The test suite fails because of <https://github.com/jswebtools/language-ecmascript/issues/7>.
Jailbreak to support current versions of QuickCheck: <https://github.com/jswebtools/language-ecmascript/issues/49>.