loro-crdt@1.13.0

Minor Changes

• fa888d8: Add mergeable child containers: child containers created under a map key that converge across peers on concurrent first-write instead of forking. Exposed as ensureMergeable{Counter,Map,List,MovableList,Text,Tree} on LoroMap. A mergeable child lives at a deterministic ContainerID derived from (parent, key, kind), and its visibility is driven by a binary ref the parent map stores at the key, so deletes and kind conflicts resolve through the map's regular LWW.