- update to 2.2
* add support of list options in curl
* allow merge of buffers by name in command /buffer
* add reverse of string in evaluation of expressions with "rev:"
* add indexed ban list and completion for /unban and /unquiet (IRC plugin)
* add support for IRCv3.2 Client Capability Negotiation
* add support for IRCv3.2 invite-notify
* add support for IRCv3.2 chghost, add options irc.look.smart_filter_chghost
and irc.color.message_chghost
* add option xfer.network.send_ack
* add support of Python 3.7
* fix memory leaks scripting plugins
* many bugs fixed. (forwarded request 623469 from mimi_vx)