TODO list for s3cmd project
 - For 0.9.9
   - Implement 'cp' and 'mv'
   - Better upload / download progress display (and remove 
     excessive useless transfer info from verbose/debug 
   - Warn when encryption is required (conf/arg) for sync
     and request for explicit --no-encrypt parameter.
   - Add --include/--include-from/--rinclude* for sync
 - After 1.0.0
   - Speed up upload / download with multiple threads.
 - Treat objects with "/" in their name as directories
   - Will need local cache for bucket listings
   - More user friendly 'del' operation that would work
     with "directories"
   - Recursion for some commands
 - Implement GPG for sync
   (it's not that easy since it won't be easy to compare
    the encrypted-remote-object size with local file. 
    either we can store the metadata in a dedicated file 
    where we face a risk of inconsistencies, or we'll store
    the metadata encrypted in each object header where we'll
    have to do large number for object/HEAD requests. tough 
 - Keep man page up to date and write some more documentation
   - Yeah, right ;-)