Feature Request: SSH Agent support

[jbeisser]

I don't always bounce from host A to host B, but when I do I want to forward my local SSH agent to validate the keys. This should be a simple flag on the Host configuration (equivalent to SSH ForwardAgent yes setting).

[migueldeicaza]

Thanks, I will keep this in mind.

I might need to extend libssh2, as it looks like this capability has not been implemented:

https://github.com/libssh2/libssh2/issues/535

[JosephHill]

Duplicate of #67

[migueldeicaza]

Working on it

[migueldeicaza]

Implemented, coming in the next release