hyperdrive

type Hyperdrive interface {
	Sync(shardHash sig.Hash, commit block.Commit) bool

	AcceptTick(t time.Time)
	AcceptPropose(shardHash sig.Hash, proposed block.SignedPropose)
	AcceptPreVote(shardHash sig.Hash, preVote block.SignedPreVote)
	AcceptPreCommit(shardHash sig.Hash, preCommit block.SignedPreCommit)

	BeginShard(shard, previousShard shard.Shard, head *block.Commit, pool tx.Pool)
	EndShard(shardHash sig.Hash)
	DropShard(shardHash sig.Hash)
}