Delete the server window when exiting

May be overzealous.
Keep the server window around during debug
Delete message windows along with server's
Merge pull request #7 from mccoyst/win_del

Window tweaks
Add SSL support.

Fixes #6.
Merge pull request #8 from velour/ssl

Add SSL support.
Reply with a PONG if PINGed during nick registration.

The PONG includes the same arguments as the reveived PING. This is an
IP spoofing prevention technique used by some servers.
Merge pull request #9 from velour/login

Reply with a PONG if PINGed during nick registration.
Be insecure ☹
Merge pull request #10 from velour/insecure

Be insecure ☺