Port to Sponge

This release is for the port to Sponge!

Update mkpasswd to be slightly more secure

This release cleans up the Spigot codebase a bit since the port to BungeeCord had some readability improvements and better behavior for handling the mkpasswd command.

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.

1.3.6.1

Fixes an upstream bug, also removed some debug cruft I forgot about. This should now be the latest stable release. Added port for BungeeCord.

1.3.6: Added 3 new password hashing schemes

• Added password hashing algorithms so the config is much more secure. It supports 3 hashing algorithms pbkdf2, bcrypt, and sha256. It also still supports the insecure plain text method.

• Added support for editing the SSH motd text so you can now change it to maybe say you're not supposed to have access to the server, it also supports minecraft-style color codes (translated to ANSI terminal colors as not all minecraft colors are supported in ANSI terminals)

1.3.5

• Fixed a bug with overwriting different users who were connecting to the session. Sessions now work as expected and without error.
• You can now configure how many times to retry public keys as well as passwords.
• Console now supports the CTRL+D key sequence so you can quickly exit the session.
• The SSH MOTD displayed when you login has a few new tweaks that seem more appropriate.

1.3.4.2

Updated SSH libraries to support more features, added support for the standard authorized_keys file format for each user, allowing each user to have their own set of authorized public keys.