mptt v0.0.8

Many thanks to @GaretJax

0.0.8 (2014-08-15)

• Add CONTRIBUTORS.txt

Features

• Automatically register tree classes enhancement (#28)
• Added support polymorphic tree models (#24)

Bug Fixes

• Fix expire left/right attributes of parent somewhen after the before_insert event (#30)
• Fix tree_id is incorrectly set to an existing tree if no parent is set (#23)
• Fix package is not installable if sqlalchemy is not (yet) installed (#22)