## 0.5.0 to 0.5.5

* update to ruby driver 0.20.1 and the new bson gems
* require MongoDB 1.4
* can be used with ActiveSupport 2 or 3
* Rails3 support with [MongoDoc-Rails](http://github.com/leshill/mongo_doc-rails) thanks to elliotcm

## 0.4.2

* `Document#update_attributes` uses $ positional operator when used from within an embed_many association
* Require MongoDB 1.3.4 or greater