Update get_child_type_choices() signature for django-polymorphic 0.6 compatibility.
Add changelog entry for django-polymorphic 0.6 support.
Added `page` variable for menu items in `PageNavigationNode`.
Merge pull request #48 from benkonrath/v0.8.x

Update get_child_type_choices() signature for django-polymorphic 0.6 compatibility.
Add south support to the example project
Merge pull request #49 from benkonrath/add-page-to-naviation-node

Add page to naviation node
Bump version to 0.8.7 - extra support release for 0.8 branch
Merge changelog of branch 'v0.8.x'