0.8.3 More build fixes

Tag 0.8.2

Bump version to 0.8.1. Add screenshots of admin options. Fixes django…

…-mptt#438

Release 0.8.0

New features:
* Add support for python 3.5 (dropped 2.6)
* Add support for django 1.9 (dropped 1.4, 1.6, 1.7)
* Add a node_moved signal
* Spanish (Argentina) translation
* `TreeQuerySet.get_cached_trees()`

Fixes etc:
* Much faster `get_queryset_ancestors/descendants`
* Fixed django-mptt#176 (infinite recursion when using `.only()` / `.defer()`)
* Much improved test coverage

0.7.4. Fixes a regression affecting `TreeManager.get_queryset_ancesto…

…rs()` (django-mptt#379)

Thanks @p-clem and @musashiXXX

0.7.3. Fixes a regression in 0.7.x with handling of attribute setup i…

…n certain scenarios (django-mptt#375, django-mptt#376)

0.7.2. Fixes regression in 0.7.x relating to custom managers on proxy…

… models.