IRCv3.2 Support

[ariscop]

http://ircv3.net/irc/3.2.html

• [ ] Capability Negotiation
• [ ] Message Tags
• [ ] metadata Extension
• [x] monitor Extension
• [x] chghost extension
• [ ] cap-notify extension
• [ ] echo-message extension
• [ ] userhost-in-names extension

[ariscop]

MONITOR has been implemented since before git history

[ariscop]

chghost added by 5b9c1dbd4d698c83f0c7ebd39a67594198b6a9c3