Improvements to indexing documentation (#130)
Ensure as_pymongo() and to_json honour only() and exclude() (#293)
If values cant be compared mark as changed (#287)
Add support for new geojson fields, indexes and queries (#299)
get_db() only assigns the db after authentication (#257)
Geo errors fix and test update
Updated minimum requirements
Updated tests for passing write_concern to update and update_one to check return.
Pass write_concern parameter from update_one
Merge pull request #302 from Demoncode/upstream

Pass through write_concern from update_one to update correctly
Removed import with from future
Merge branch 'master' of github.com:MongoEngine/mongoengine
0.8.0RC1 is a go!
Update readme
Fix cloning of sliced querysets (#303)
fixed typo in defining-documents.rst
Merge pull request #304 from jinzhang273/master

Fixed typo in defining-documents.rst
Updated changelog
Added Jin Zhang to authors (#304)
Updates to CONTRIBUTING.rst