improve connection

restore wechat login. improve irc keep alive.

asyncio version. clean code.

fix irc reconnect

update url fetcher

fix irc bot. add simple title bot.

name relate update.

update irc wrapper. fix message forward cycle.

fix tox message recursive broadcast.

improve bidirection message passby

fix tox av group chat

fix tox agent. fix encoding.

clean code. fix xmpp message content

use context for chat session data

begin refill message context