Send command, literally perfected.

Don't send send dummy.

version 2.2.0 - join and stop accept session number from list

version 2.1.0 - wemux kick to kick SSH user from server

version 2.0.0 - hostname terminology changed to session

version 1.9.3 - only rewrite wemux_last_host when necessary

version 1.9.2 - connected user list

version 1.8.2 - wemux config command

version 1.8.0 - Multi-Host mode disabled by default.

version 1.7.0 - ability to list active hosts

version 1.6.0 - Hostname changing can be disabled.