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Changelog
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Changes in v0.2.1
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- Added a MongoEngine backend for Django sessions
- Added force_insert to Document.save()
- Improved querying syntax for ListField and EmbeddedDocumentField
- Added support for user-defined primary keys (_ids in MongoDB)

Changes in v0.2
===============
- Added Q class for building advanced queries
- Added QuerySet methods for atomic updates to documents
- Fields may now specify ``unique=True`` to enforce uniqueness across a collection
- Added option for default document ordering
- Fixed bug in index definitions

Changes in v0.1.3
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- Added Django authentication backend
- Added Document.meta support for indexes, which are ensured just before 
  querying takes place
- A few minor bugfixes


Changes in v0.1.2
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- Query values may be processed before before being used in queries
- Made connections lazy
- Fixed bug in Document dictionary-style access
- Added BooleanField
- Added Document.reload method


Changes in v0.1.1
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- Documents may now use capped collections