Allowed failures for Django development version.
Python 2.6 requires positioning by number of fragments in format.

This commit will restore Python 2.6 compatability.
Fix for post_init signal to receive correct state of _created flag.
Fix setting of _created flag in base.Document constructor
Add testcase
Merge pull request #635 from SergeChmelev/master

Fix for post_init signal to receive correct state of _created flag.
Merge pull request #692 from rochacbruno/master

Updates with no operator should default to $set Fix #667
Added @rochacbrun to the AUTHORS file. #692
fix conflict