0.04  Tue Aug 2 11:00:00 2012
    - Don't return empty 204 instead of a 404 when file doesn't exist

0.03  Tue Jul 3 12:00:00 2012
    - Fix 200 response with empty body for ?paths when file doesn't exist.

0.02  Wed Jun 27 10:00:00 2012
    - Add ?paths=1 to get the paths, rather than relying on Perlbal headers
    - Remove Content-Length from HEAD requests

