Mongodict

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This version BREAKS DATA COMPATIBILITY with 0.3.0. Please see below:

- Option to specify index type: key-only or key-and-value. If you specify "key
and value" you can't have documents (key + value) greater than 16MB. Default
option moved to key-only (fixes `issue 14
<https://github.com/turicas/mongodict/issues/14>`_);
- Replace ``value`` with ``v`` as the key inside Mongo document to save space.
Note that you will need to migrate your data! A little script is provided.

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- Added a "codec" concept, so user can customized how value data is saved.
`Pickle is the default codec <https://github.com/turicas/mongodict/issues/12>`_;
- Added a
`migration script <https://github.com/turicas/mongodict/blob/master/migrate_data.py>`_
to migrate data from mongodict <= 0.2.1;
- `Using basic mapping (dict) interface tests from python source
<https://github.com/turicas/mongodict/issues/13>`_;
- Updated `tox <https://pypi.python.org/pypi/tox>`_ config to use Python 2.7.5
and Python 3.3.2 to run tests.

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- [Bug] Fix utf8 encoding problem when using ``bson.Binary`` (11)
- [Bug] Fix 16MB-limit problem when calling ``MongoDict.keys`` (10)
- [Bug] ``MongoDict.clear()`` do not remove collection indexes anymore
- Raise *instance* of ``KeyError`` instead of class
- Add ``auth`` parameter to ``MongoDict`` (8)
- Add information about tox in README
- Fixes setup.py to work with python 2.6
- Use ``collection.count()`` instead of ``cursor.count()``

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- Add Python 3.2 support (thanks, jucacrispim)
- Optimize all queries to hit only the index
- Add docstrings to entire module
- Add ``mongodict.__all__``
- Add ``MongoDict.__del__``
- Use tox to run tests

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- Set ``safe=True`` by default (slower)
- Did some optimizations on ``__getitem__`` and ``__delitem__``
- Added method ``clear``, an optimized way to delete all keys
- An ``UnicodeDecodeError`` is raised if one of the strings
(key or value) is not ``unicode`` or ``str`` encoded with ``utf-8`` codec
- Replaced ``insert`` with ``update`` - it was generating an exception when
updating (already existent) keys
- Add benchmark (Python dict vs Redis vs mongodict)

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- First version released
- Basic ``dict``-like behaviour