Merge branch 'release' of git://github.com/melinath/philo

* 'release' of git://github.com/melinath/philo: (44 commits)
  Hacked around the descriptor issues, since there were only three.
  Added docs for waldo.
  Converted, corrected, improved, and added to documentation for sobol's models and search API.
  Cleaned up SearchView.results_view. Added documentation for sobol.models.
  Implemented more robust delayed registry iteration. Modules declaring new searches can now be imported after sobol without issue.
  Tweaks to sobol to make its use simpler: added a prerendered version of the results to the ajax response, added result to result context by default, and preconfigured GET params on the reversed ajax_api urls that are passed to the template context. Added initial Sobol migration.
  Added directives and autodocumenters for template tags and filters in a custom extension. Switched previous template tag/filter docs to use the new directives. Renamed NavigationManager.get_queryset method to the correct get_query_set. Documented shipherd.
  Added missing Attribute import to philo.utils.entities.
  Added note about Julian's development status.
  Added some automatic skips to autodocs. Added skeletal docs for contrib and complete docs for penfield. Removed philo validators.
  Corrected various imports after adding limiting __all__ entries to philo.models.*
  Removed penfield's reliance on the Titled model and marked it as deprecated.
  Added/corrected docstrings for custom model fields and EntityProxyFields (now renamed to AttributeProxyFields and combined with former AttributeField). Added docs for philo.forms.
  Moved templatetag docs into the respective modules and fleshed them out. Centralized adding of template tags to builtins. Added __all__ declarations to philo.models.*. Added a bit of documentation to Page.render_to_string about context variables.
  Added docs for the db template loader and skeleton docs for templatetags.  Updated template tag references to actually point to templatetags. Made some minor improvements to references.
  Swapped references to specific AttributeMappers in for vague references to dictionary-like objects. Corrected links in a few places. Combined middleware docs with new node_view docs.
  Standardized AttributeMapper.get_attribute behavior. Corrected LazyTreeAttributeMapper behavior. Added documentation for AttributeMappers.
  Split utils into entities (i.e. AttributeMappers) and other utils. Added documentation for the other utils and prepped for documenting the AttributeMappers.
  Removed the various philo.validators URL validators since they served no real purpose. (The only strings that would not validate actually were valid.) Added docstrings to the validators and added a validators doc file.
  Added/tweaked docs for exceptions, middleware, and signals. Minor formatting tweaks to View and TreeManager docstrings.
  ...