Jump example not for 0.27.0?

Hi @hierynomus,

Thanks a ton for this repo, it saves me so much time.

So, I'm using 0.27.0 (need the RSA support), and I also need to perform "jump" logic (https://github.com/hierynomus/sshj/blob/master/examples/src/main/java/net/schmizz/sshj/examples/Jump.java), but the `DirectConnection` class and the `newDirectConnection()` method are not there anymore (looks like the examples use 0.24.0?)

Is there a newer way to accomplish this or perhaps I'm missing something somewhere in this repo that demonstrates how to do it?

Thanks!