bug fix for RefferenceField.to_mongo when dbref=False
addition to AUTHORS
Updated travis.yml
Trying to fix seesaw test on travis
Adding some debugging
Fixed handling for old style types
Don't freeze the current query state when calling .order_by()

This changes order_by() to eliminate its reference to
self._cursor. This meant that any parameters built by QuerySet
that followed an order_by() clause were ignored.
session collection parameter; encoding optional

Added a parameter for the name of the session collection; Added the
option to not encode session_data, which is useful for expiring sessions
of users when a password is changed, etc.; these upgrades provided by
SocialVilla Inc.
split line to meet 79 char max line limit
added comments
EmailField should honor StringField validation as well
First as_pymongo implementation
Update AUTHORS

added me (Adrian Scott, issues 180, 181)
Implement _get_as_pymongo
Add as_pymongo to __getitem__ and in_bulk
Add more tests
Updated Changelog
Merge branch 'master' of https://github.com/shaunduncan/mongoengine
Fixed EmailField so can add extra validation

(MongoEngine/mongoengine#173, MongoEngine/mongoengine#174, MongoEngine/mongoengine#187)
Merge branch 'master' of https://github.com/AdrianScott/mongoengine