Bugs:
-----

- Idle timer sometimes does not expire or expires during download;
  report if you have any specific info on this bug(such as commands
  that cause timer malfunctions).
  Hint: set debuglevel to 3 to enable timer debugging.

Limitations:
------------

- Only STREAM mode and BINARY/ASCII TYPEs are supported(who needs anything
  else?).
- LIST and NLST commands only accept a couple of parameters; -R(recursive)
  listing is not supported(yet).
