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## Version 1.2.4.0
* Add instances for: Unique, Version, Fixed, NonEmpty, Min, Max, Arg,
First, Last, WrappedMonoid, Option
* Support GHC 8.0
## Version 1.2.3.3
* Support integer-simple.
## Version 1.2.3.2
* Add support for GHC 7.10 typeRepFingerprint
## Version 1.2.3.1
* Added support for random 1.1.*.
## Version 1.2.3.0
* Silence integer literal overflow warning
* Add support for GHC 7.10 `integer-gmp2` & `Natural`
* Add instance for Data.Void
* Make the SSE .cabal flags manual
* Add an upper bound on bytestring
## Version 1.2.2.0
* Add instances for `Data.ByteString.Short`
* Use a 32-bit default salt on 32-bit archs.
## Version 1.2.1.0
* Revert instances to their 1.1 implementations to regain the
performance we had then.
* Remove use of random salt altogether. Without using SipHash the
benefit is unclear (i.e. collision attacks still work) and the
complexity is no longer worth it.
* Documentation improvements.
## Version 1.2.0.10
* Fix for GHC 7.0.
## Version 1.2.0.9
* Stop using SipHash. The current implementation still has segfault
causing bugs that we won't be able to fix soon.
* Stop using Wang hash. It degrades performance of fixed-size integer
hashing too much.
## Version 1.2.0.8
* Fix linking issue when SSE was disabled.
* Hash small signed Integers correctly.
## Version 1.2.0.7
* Add flags to control usage of SSE.
## Version 1.2.0.6
* Fix another segfault caused by SSE2 code.
## Version 1.2.0.5
* More portability fixes.
* Force stack alignment to 16 bytes everywhere. Fixes a segfault.
* Fix bug where code relied on rewrite rules firing for correctness.
## Version1.2.0.4
* Update docs to match code.
* Work around bug in GHCi runtime linker, which never call static
initializers.
## Version1.2.0.3
* Make building of SSE 4.1 code conditional, as it doesn't work on all
platforms.
* Use a fixed salt, but allow random salting. Random salting by
default broke people's code.
## Version1.2.0.2
* Work around ghci linker bug on Windows.
## Version1.2.0.1
* Fix performance bug in SSE implementation of SipHash.
* Fix segfault due to incorrect stack alignment on Windows.
## Version1.2.0.0
* Switch string hashing from FNV-1 to SipHash, in an effort to
prevent collision attacks.
* Switch fixed-size integer hashing to Wang hash.
* The default salt now switched on every program run, in an effort to
prevent collision attacks.
* Move hash method out of Hashable type class.
* Add support for generic instance deriving.
* Add instance for Ordering.
## Version1.1.2.5
* Bug fix for bytestring < 0.10.0.
## Version1.1.2.4
* Switch string hashing from Bernstein to FNV-1
* Faster instance for Integer.
* Update dependency on base, ghc-prim
* Now works with GHC 7.6.
## Version1.1.2.3
* Add instance for TypeRep.
* Update dependency on test-framework.
## Version1.1.2.2
* Bug fix for GHC 7.4
## Version1.1.2.1
* Update dependency on test-framework.
* Improve documentation of combine.
## Version1.1.2.0
* Add instances for Interger, Ratio, Float, Double, and StableName.
* Fix hash collision issues for lists and tuples when using a
user-specified salt.
## Version1.1.1.0
* Improved instances for tuples and lists.
* Add instances for StableName, Float, Double, Integer, and Ratio.
## Version1.1.1.0
* Add hashWithSalt, which allows the user to create different hash
values for the same input by providing different seeds. This is
useful for application like Cuckoo hashing which need a family of
hash functions.
* Fix a bug in the Hashable instance for Int64/Word64 on 32-bit
platforms.
* Improved resilience to leading zero in the input being hashed.
## Version1.1.0.0
* Add instance for: strict and lazy Texts, ThreadId
* Add hashPtrWithSalt and hashByteArrayWithSalt.
* Faster ByteArray# hashing.
* Fix a signedness bug that affected ByteString.
* Fix ByteString hashing to work correctly on both 32 and 64-bit
platforms.
## Version1.0.1.1
* Fix bug in Hashable instance for lazy ByteStrings where differences
in the internal structure of the ByteString could cause different
hash values for ByteStrings that are equal according to ==.
## Version1.0.1.0
* Add two helpers for creating Hashable instances: hashPtr and
hashByteArray.
## Version1.0.0
* Separate Hashable class to its own package from hashmap 1.0.0.3.
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