Redis-schematics

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- Nothing changed yet.

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- Deprecate Python 2 and migrate to Python 3.

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**Features**

- Optional JSON serialization.

**Bug Fixes**

- Broken tests with py3.

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**Bug Fixes**

- Update setup url.

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**Features**

- HashRedisMixin to store all objects on a single hash.
- ``delete_all()`` and ``delete_filter()`` methods.

**Bug Fixes**

- Allow non-string id's to be used as primary keys.
- Crash on ``all()`` with empty lists.

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- Initial release.