0.3.4 (2018-05-28) * #29: Add Semigroup instances (needed for GHC 8.4) * Add NfData instances 0.3.3 (2016-05-30) * Document precondition of occurrence > 0 on from*List functions. * #18: Compatibility with GHC 8.0 * #13: Fix warnings about redundant imports * #22: Fixed warnings about unnecessary constraints 0.3.2: (2016-01-12) * #7: Work around doctest issue of ambiguous modules 0.3.1: (2016-01-11) * #4: Fix maxView to use deleteFindMax instead of deleteFindMin 0.3.0: (2015-06-29) * #3: Return Maybe instead of `fail`-ing in a monad