Try to ensure that the mkpasswd command run in ssh sessions only echos to
ssh client running that command. This gives us slightly more security
against other session users seeing the hashed password.
Fixed console sending with some of the APIs
Updated version to 1.3.7 to match for next spigot + bungeecord release.
Each user can have a set of authorized keys for public key authentication.
This is better to support as it lets us use different algorithms and not
just RSA. In the age of security, it's good to have variety.
I also added additional libraries to support ed25519-based public keys.
I updated the SSH libraries so any upstream bug fixes are applied, fixed
some warnings and a few other things.
