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0.1.0
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* Don't track events without valid experiments attached.
* Submit to PyPi.
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0.0.13
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* Support for grouped experiments.
* Checking audience conditions before triggering track event.
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0.0.12
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* Updating bucketing to accommodate forced variations.
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0.0.11
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* Minor fixes for hashing, logging and bucketing.
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0.0.10
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* Adding support for error handling and logging.
* Update SDK interface.
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0.0.9
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* Update bucketing algorithm.
* Using experiment status field in activate and track.
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0.0.8
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* Updating versioning logic.
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0.0.7
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* Replacing requests with requests[security] to address SSL issues.
* Renaming track_event to be be track and re-arranging arguments for track and activate.
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0.0.6
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* Introducing audience matching based on attributes.
* Renaming dimensions to be attributes throughout the SDK.
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0.0.5
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* Updating bucket logic to use user ID and experiment ID combination for bucketing.
* Updating bucketing ID to be user ID in optimizely.Optimizely.
* Use goal to experiments mapping from JSON.
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0.0.4
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* Request timeouts after 10 seconds.
* Revenue tracking using the revenue goal.
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0.0.3
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* Record Account ID in all event log calls.
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0.0.2
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* Introduce get variation.
* Fetch config from CDN.
* Introduce time and source information in the log event call.
* Introduce pure Python implementation of mmh3.
* Adjust bucketing ID and end user ID.
* Improve hashing to be fair.
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0.0.1
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* Initial alpha release.
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