1.1.0

• remove unnecessary Num constraint from bunch of constructors and operations: interval, (<=..<=), (<..<=), (<=..<), (<..<), whole, empty, singleton, intersection, intersections, hull, hulls. Thanks to Tad Doxsee for pointing out that.

1.0.0

• use extended-reals package for representing endpoints
• add (experimental) comparison operators that produce witnesses: (<??), (<=??), (==??), (>=??), (>??)

0.6.0

• add hulls, intersections :: (Num r, Ord r) => [Interval r] -> Interval r
• fix a bug of (<=?) operator

0.5.0

• fix dependency issue with QuickCheck and test-framework-quickcheck2

0.4.0

• add simplestRationalWithin :: RealFrac r => Interval r -> Maybe Rational