Updated version to 0.8.8

Fix for broken pypi artifact

Released 0.9.0. Fixes MongoEngine#805

0.8.7

Fix django auth import (MongoEngine#531)

Version bump 0.8.5

Updated setup.py

0.8.3 is a go

Version bump 0.8.2

Updated requirements for test suite

0.8.0 is a go