ghc-hedgehog 1.0.1 Property-based testing in the spirt of QuickCheck

Hedgehog is a property-based testing system, in the spirit of QuickCheck. Hedgehog uses integrated shrinking, so shrinks obey the invariants of generated values by construction.

To get started quickly, see the examples: https://github.com/hedgehogqa/haskell-hedgehog/tree/master/hedgehog-example