hyperloglog-0.2.3: CHANGELOG.markdown

0.2.3
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* GHC 7.8 compatibility
* Bumped `cereal` dependency.

0.2.1
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* Exported `insert` from `Data.HyperLogLog`.

0.2
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* Made compatible with `lens` 4

0.1
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* Ported `Data.Analytics.Approximate.HyperLogLog` from [analytics](http://github.com/analytics) into a separate package.