IRCv3 is not incubated by Atheme anymore.

nenolod agreed to decrease his influence (hence the move of github repo),
and not to abuse his powers (see charter)
Merge pull request #70 from DarthGandalf/ircv3

IRCv3 is not incubated by Atheme.org any more.
specification/message-tags-3.2: clarify that message tags are unordered