Fixed issue where foreign keys on collections without ObjectID primary keys would cause a crash
Fixed issue with criteria containing a key set to null
Fixed issue where serializeValues wasn't checking whether a string qualified as a Mongo ID before attempting to turn it into an ObjectID (this still could be done better; see @todo comment)
Fixed issue where array attributes would be over-parsed, so {'$in':["527ac6ca97649d045d000003"]} would get to line 265, and the toString() would return "527ac6ca97649d045d000003", which matches a MongoID, and bad things would happen.
fix to be able to usw options in find like limit, skip, ...
Merge pull request #86 from ArdentZeal/associations

Associations: fix to be able to use options in find like limit, skip, ...
remove hacked together association stuff and work with a connection pool
update to use new connections config logic
remove "joins" logic from query builder
add fixes to pass all the integration tests from waterline adapter tests
update native unit test
merge associations
fix default keys