Fixes resolving to db_field from class field name, in distinct() query.
Merge conflicts resolved.
Removed merge trackers in code, merged correctly now.
Merge remote-tracking branch 'upstream/master'
Added a failing test when using pickle with signal hooks
test reference to a custom pk doc
added get_next_value to SequenceField
Merge branch 'master' of https://github.com/MongoEngine/mongoengine
added my github profile
fixes for get_next_value
fixes for value_decorator
If you need to read from another database, use switch_db not switch_collection.
Merge pull request #325 from daxtens/doc-fixes

Minor documentation fix: switch_collection -> switch_db for changing database
Updated AUTHORS (#325)
Merge branch 'master' of github.com:MongoEngine/mongoengine
Merge remote-tracking branch 'origin/pr/319'
Doc updated
Updated changelog
Merge remote-tracking branch 'origin/pr/316' into 316
Updated pickling (#316)