#20 put --sync-up --sync-down

[han]

I would like to request the following feature for yafc:

--sync-up

Which will sync the remote dir with the local dir,
removing all

files that do not exist locally, after confirmation.

--sync-down

Same but now the other way.

And I would like it very much if `lcd' would simply
print the pwd

instead of switching to ~

I hope you like my ideas.