0.2.11.0

• Add HashMap.findWithDefault (soft-deprecates HashMap.lookupDefault). Thanks, Matt Renaud.

• Add HashMap.fromListWithKey. Thanks, Josef Svenningsson.

• Add more folding functions and use them in Foldable instances. Thanks, David Feuer.

• Add HashMap.!?, a flipped version of lookup. Thanks, Matt Renaud.

• Add a Bifoldable instance for HashMap. Thanks, Joseph Sible.

• Add a HasCallStack constraint to (!). Thanks, Roman Cheplyaka.

Bug fixes

• Fix a space leak affecting updates on keys with hash collisions. Thanks, Neil Mitchell. (#254)

• Get rid of some silly thunks that could be left lying around. (#232). Thanks, David Feuer.

Other changes

• Speed up the Hashable instances for HashMap and HashSet. Thanks, Edward Amsden.

• Remove a dependency cycle hack from the benchmark suite. Thanks, Andrew Martin.

• Improve documentation. Thanks, Tristan McLeay, Li-yao Xia, Gareth Smith, Simon Jakobi, Sergey Vinokurov, and likely others.

0.2.10.0

• Add HashMap.alterF.

• Add HashMap.keysSet.

• Make HashMap.Strict.traverseWithKey force the results before installing them in the map.

0.2.9.0

• Add Ord/Ord1/Ord2 instances. (Thanks, Oleg Grenrus)

• Use SmallArray# instead of Array# for GHC versions 7.10 and above. (Thanks, Dmitry Ivanov)

• Adjust for Semigroup => Monoid proposal implementation. (Thanks, Ryan Scott)

Bug fixes

• Fix a strictness bug in fromListWith.

• Enable eager blackholing for pre-8.2 GHC versions to work around a runtime system bug. (Thanks, Ben Gamari)

• Avoid sketchy reimplementation of ST when compiling with recent GHC.

Other changes

• Remove support for GHC versions before 7.8. (Thanks, Dmitry Ivanov)

• Add internal documentaton. (Thanks, Johan Tibell)

0.2.8.0

• Add Eq1/2, Show1/2, Read1 instances with base-4.9

• Eq (HashSet a) doesn't require Hashable a anymore, only Eq a.

• Add Hashable1/2 with hashable-1.2.6.0

• Add differenceWith function.

0.2.7.2

• Don't use -fregs-graphs

• Fix benchmark compilation on stack.

0.2.7.1

• Fix linker error related to popcnt.

• Haddock improvements.

• Fix benchmark compilation when downloaded from Hackage.

0.2.7.0

• Support criterion 1.1

• Add unionWithKey for hash maps.

0.2.6.0

• Mark several modules as Trustworthy.

• Add Hashable instances for HashMap and HashSet.

• Add mapMaybe, mapMaybeWithKey, update, alter, and intersectionWithKey.

• Add roles.

• Add Hashable and Semigroup instances.

0.2.5.1 (2014-10-11)

• Support base-4.8