Fix race conditions and stale SSH client process in SshSocksConnector - #54

Fix race conditions and stale SSH client process in SshSocksConnector#54

clue merged 4 commits into

clue:1.xclue/reactphp-ssh-proxy:1.xfrom

clue-labs:socks-raceclue-labs/reactphp-ssh-proxy:socks-raceCopy head branch name to clipboard