= TO-DO =

* mergeinfo interpretation needs some work. Present implementation may
  create confusing merge links in some cases.

* Someday, port fully to Python 3.  At that point, reapply the commit
  "Ensure BZ2File only work on binary data".

* THe Subversion dumper is pretty weak, more a proof of concept than
  anything useful for production.

* New features: set difference and ancestors-of in selections. 
  --dedos option on filter.
