Numeric host names in .ssh/config are now parsed correctly
ssh_config parser fixes.
Since eq-signs are technically allowed, check for those first. Also,
silently ignore lines where a value could not be extracted.
add support for 'env' channel requests
support for :user
support for :host_name
support for :host_key_alias
add support for :user_known_hosts_file and :global_known_hosts_file
docs for Net::SSH::Config
start working to improve documentation
(partial) ssh_config support