extrapolate-0.3.1: generalize counter-examples of test properties

Index - *

*/=*Test.Extrapolate.Core, Test.Extrapolate.Basic
*<*Test.Extrapolate.Core, Test.Extrapolate.Basic
*<=*Test.Extrapolate.Core, Test.Extrapolate.Basic
*==*Test.Extrapolate.Core, Test.Extrapolate.Basic