Package ssh_config provides tools for manipulating SSH config files.
Importantly, this parser attempts to preserve comments in a given file, so you
can manipulate a `ssh_config` file from a program, if your heart desires.
The Get() and GetStrict() functions will attempt to read values from
$HOME/.ssh/config, falling back to /etc/ssh/ssh_config. The first argument is
the host name to match on ("example.com"), and the second argument is the key
you want to retrieve ("Port"). The keywords are case insensitive.
