Updated property tests to work with >= QuickCheck 2
Updated property tests to work with >= QuickCheck 2

dylex/blaze-markup,iblech/blaze-html,jgm/blaze-html,jgm/blaze-html,mikehat/blaze-all,Soostone/blaze-html-haste,FranklinChen/blaze-markup,Soostone/blaze-markup-haste,dylex/blaze-markup,iblech/blaze-html,Soostone/blaze-markup-haste,mikehat/blaze-all,jgm/blaze-html,FranklinChen/blaze-markup,mikehat/blaze-all