Version 0.3.1 is available!

As usual, many new features and bug fixes:
- new IRC commands: allserv, allchan, sajoin, samode, sanick, sapart, saquit,
- check of SSL certificates and use of CertFP for IRC servers,
- options to customize IRC CTCP replies,
- options to choose target buffer for IRC messages,
- anti-flood improved for IRC servers,
- new expansions for alias arguments,
- new color darkgray, bright colors supported for backgrounds,
- many bugs fixed.