val set changes

types/block.go

@@ -154,10 +154,10 @@ type Header struct {
 	Time           time.Time `json:"time"`
 	NumTxs         int       `json:"num_txs"`
 	LastBlockID    BlockID   `json:"last_block_id"`
-	LastCommitHash []byte    `json:"last_commit_hash"`
-	DataHash       []byte    `json:"data_hash"`
-	ValidatorsHash []byte    `json:"validators_hash"`
-	AppHash        []byte    `json:"app_hash"` // state merkle root of txs from the previous block
+	LastCommitHash []byte    `json:"last_commit_hash"` // commit from validators from the last block
+	ValidatorsHash []byte    `json:"validators_hash"`  // validators for the current block
+	DataHash       []byte    `json:"data_hash"`        // transactions
+	AppHash        []byte    `json:"app_hash"`         // state after txs from the previous block
 }
 
 // NOTE: hash is nil if required fields are missing.

types/validator.go

@@ -20,6 +20,15 @@ type Validator struct {
 	Accum       int64         `json:"accum"`
 }
 
+func NewValidator(pubKey crypto.PubKey, votingPower int64) *Validator {
+	return &Validator{
+		Address:     pubKey.Address(),
+		PubKey:      pubKey,
+		VotingPower: votingPower,
+		Accum:       0,
+	}
+}
+
 // Creates a new copy of the validator so we can mutate accum.
 // Panics if the validator is nil.
 func (v *Validator) Copy() *Validator {