TODO/IDEAS for duply

        - possibility to restore time frames (incl. deleted files)
          realizable by listing each backup and restore from 
          oldest to the newest, problem: not performant
        - search file in all backups function and show available
          versions with backups date (currently impossible as only
          current files get listed)
        - export profile to .tgz function !!!
        - edit profile opens conf file in vi 
        - implement log-fd interpretation
        - add a duplicity option check against the options pending 
          depreciation since 0.5.10 namely --time-separator
                                           --short-filenames
                                           --old-filenames
        - add support for --no-encryption switch (no GPG_KEY,GPG_PASS)
        - add 'exclude_<command>' list usage eg. exclude_verify
        - add 'pre/post_<command>' script support
        - check success of pre/post scripts and react
        - a download/install duplicity option
        - bug: on key import it tries to import again and fails because 
          of already existing key, probably because of old gpgkey in profile
