0.5

    No backward compatibility break.

    - Bugfix in generic channel example: demonstrate how to query_filter on
      multiple queryset types.
    - Bugfix in GenericForeignKeyField: allow none value.
    - Enhancement: autocomplete_light.contrib.generic_m2m supports generic many
      to many relations.
    - Enhancement: allow registration of model with custom channel attributes,
      this allows to register a model with another "search_name" than "name"
      without subclassing.
    - Documentation improvements.
