version 0.2.3: Expand accepted versions of QuickCheck 2

version 0.2.2: Add support for QuickCheck 2

version 0.2.1: relax dependency on QuickCheck

version 0.2.0: add gdseq (using the deepseq package for base cases)

version 0.1.2: fix bug on hfixpoints

version 0.1.1: fix dependency on regular

version 0.1: initial release