Rebase to newer mcabber api
* Api versions shift:
dev:12, 12, 13, 14 -> dev:13, 15, 16, 17
switch-to-experimental
fifo-use-guard
modularize-fifo
separate-extcmd
add-hook-post-message-in-timestamp
update-changelog-v16
modularize-extcmd
guard-xmpp-password
guardize-colors
roster-state-colors
direct-invite
update-changelog-v17
muc-multiple-statuses