1.1.0 (2019-10-05)
  * Server:
    - chroot to destination directory if permissions are sufficient
    - drop -d parameter, but allow directory at the end of the command line
  * Support for some non-standard options:
    - blksize2
    - utimeout

1.0.0 (2019-03-12)
  * Initial release
  * RFC 1350 (TFTP revision 2)
  * RFC 2347 (Option Extension)
  * RFC 2348 (Blocksize Option)
  * RFC 2349 (Timeout Interval and Transfer Size Options)