mongo_driver 0.9.0

Mongo Rust driver built on top of the Mongo C driver
Documentation
# 0.9.0
* Add WriteConcernError and DuplicateKey to error
* Add error code for unknown error
* Bulk operation result which includes reply
* Don't use natural option in tail anymore

# 0.8.0
* Upgrade bson dependency to 0.9

# 0.7.2
* Always use openssl on MacOS
* Make uri send and sync

# 0.7.1
* Fix docs link

# 0.7.0
* Use symver version requirements for dependencies

# 0.6.0
* Upgrade Mongo C driver to 1.6.3

# 0.5.0
* Upgrade Mongo C driver to 1.5.3

# 0.4.0
* Upgrade Mongo C driver to 1.4.0

# 0.3.0
* Support for aggregations

# 0.2.2
* Publicly export MongoErrorDomain and MongoErrorCode

# 0.2.1
* Add documentation url to Cargo.toml

# 0.2.0
* Refactored API, less namespaces than before.
* Upgrade Mongo C driver to 1.3.1
* Now dual licensed as both Apache and MIT

# 0.1.0
* Initial release