treaty: send treaty with the versioned mark
|%
++ ally-update |=(=update:ally ally-update-0+!>(update))
++ alliance-update |=(=update:alliance alliance-update-0+!>(update))
- ++ treaty |=(t=^treaty treaty+!>(t))
+ ++ treaty |=(t=^treaty treaty-0+!>(t))
++ treaty-update |=(u=update:^treaty treaty-update-0+!>(u))
--
:: +ca: Card construction
