stop = async () => {
    for (const db of Object.values(databases)) {
      await db.close()
    }
    if (keystore) {
      await keystore.close()
    }
    if (manifestStore) {
      await manifestStore.close()
    }
    databases = {}
  }
Stops OrbitDB, closing the underlying keystore and manifest store.
@function stop
@memberof module:OrbitDB~OrbitDB
@instance
@async