TODO
====

- add support for capture_stderr option in constructor

- port to OpenVMS

- add support for later protocol versions

- add support for encodings

- improve password login, remove Expect dependency and try to backport
  as much as possible fron Net::OpenSSH

- detect unknown host key checking

DONE
==== 

- add support for new extension methods available from late OpenSSH
  SFTP server (http://www.sfr-fresh.com/unix/misc/openssh-5.1.tar.gz:a/ssh/PROTOCOL)

- add support for unix2dos and dos2unix transformations on the fly for get and put.

- add support con restarting transfer to put, get and derived methods.