2.3
- Added some extra debug information when an improper path is cataloged.

2.2
- Add seperate index structures on the parent path and the full path of all
  objects.  This significantly improves scaling for navtrees, breadcrumbs, and
  listings.
- Assume that EPI is used inside same container as content
  and use relative search instead of absolute - basically
  transforming /plonesite search to / search with startlevel
  set to 1 instead of 0.

2.0

- Implement 'indexed_attrs' support for ExtendedPathIndex.
- Prevent navigation tree queries from stopping prematurely if
  the queried-for path does not actually exist in the index, but
  its parents do.

1.0

- Path index capable of generating a navigation tree structure
  from cataloged data.

