diff --git a/Cargo.lock b/Cargo.lock
index bbd0d50269..8605a799e6 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -613,6 +613,7 @@ dependencies = [
  "codechain-json",
  "codechain-key",
  "primitives",
+ "rand 0.6.1",
  "rlp",
  "rlp_derive",
  "serde",
diff --git a/core/src/block.rs b/core/src/block.rs
index fb488aff7b..0bde4634a3 100644
--- a/core/src/block.rs
+++ b/core/src/block.rs
@@ -18,6 +18,7 @@ use super::invoice::Invoice;
 use crate::client::{EngineInfo, TermInfo};
 use crate::consensus::CodeChainEngine;
 use crate::error::{BlockError, Error};
+use crate::stake;
 use crate::transaction::{SignedTransaction, UnverifiedTransaction};
 use crate::BlockId;
 use ccrypto::BLAKE_NULL_RLP;
@@ -232,6 +233,16 @@ impl<'x> OpenBlock<'x> {
             e
         })?;
         self.block.header.set_state_root(state_root);
+
+        /*
+        FIXME: NextValidators entry doesn't exist in the state during static-validator-set-mode.
+        It doesn't cause a direct error since we use unwrap_or_default() here, but should be aware of such problem.
+        Remove this comment after we completely omit static-validator-set-mode.
+        */
+        let vset_raw = stake::NextValidators::load_from_state(self.block.state())?;
+        let vset = vset_raw.create_compact_validator_set();
+        self.block.header.set_next_validator_set_hash(vset.hash());
+
         Ok(())
     }
 
diff --git a/core/src/consensus/stake/action_data.rs b/core/src/consensus/stake/action_data.rs
index 7b8d71afe3..b6fb1a8891 100644
--- a/core/src/consensus/stake/action_data.rs
+++ b/core/src/consensus/stake/action_data.rs
@@ -1,4 +1,4 @@
-// Copyright 2018-2019 Kodebox, Inc.
+// Copyright 2018-2020 Kodebox, Inc.
 // This file is part of CodeChain.
 //
 // This program is free software: you can redistribute it and/or modify
@@ -18,6 +18,7 @@ use super::CUSTOM_ACTION_HANDLER_ID;
 use ckey::{public_to_address, Address, Public};
 use cstate::{ActionData, ActionDataKeyBuilder, StateResult, TopLevelState, TopState, TopStateView};
 use ctypes::errors::RuntimeError;
+use ctypes::CompactValidatorSet;
 use primitives::{Bytes, H256};
 use rlp::{decode_list, encode_list, Decodable, Encodable, Rlp, RlpStream};
 use std::cmp::Ordering;
@@ -287,6 +288,10 @@ impl NextValidators {
         Ok(Self(validators))
     }
 
+    pub fn create_compact_validator_set(&self) -> CompactValidatorSet {
+        CompactValidatorSet(self.0.iter().map(|x| (*x.pubkey(), x.delegation())).collect())
+    }
+
     pub fn elect(state: &TopLevelState) -> StateResult<Self> {
         let (delegation_threshold, max_num_of_validators, min_num_of_validators, min_deposit) = {
             let metadata = state.metadata()?.expect("Metadata must exist");
diff --git a/core/src/encoded.rs b/core/src/encoded.rs
index 4342485aef..8ec2a0b4b8 100644
--- a/core/src/encoded.rs
+++ b/core/src/encoded.rs
@@ -1,4 +1,4 @@
-// Copyright 2018-2019 Kodebox, Inc.
+// Copyright 2018-2020 Kodebox, Inc.
 // This file is part of CodeChain.
 //
 // This program is free software: you can redistribute it and/or modify
@@ -94,6 +94,11 @@ impl Header {
         self.view().transactions_root()
     }
 
+    /// Returns the transaction trie root.
+    pub fn next_validator_set_hash(&self) -> H256 {
+        self.view().next_validator_set_hash()
+    }
+
     /// Score of this block
     pub fn score(&self) -> U256 {
         self.view().score()
diff --git a/core/src/error.rs b/core/src/error.rs
index 57b0a8b724..468d4f2e39 100644
--- a/core/src/error.rs
+++ b/core/src/error.rs
@@ -84,6 +84,8 @@ pub enum BlockError {
     InvalidStateRoot(Mismatch<H256>),
     /// Transactions root header field is invalid.
     InvalidTransactionsRoot(Mismatch<H256>),
+    /// Next validator set hash header field is invalid.
+    InvalidNextValidatorSetHash(Mismatch<H256>),
     /// Score is out of range; this can be used as an looser error prior to getting a definitive
     /// value for score. This error needs only provide bounds of which it is out.
     ScoreOutOfBounds(OutOfBounds<U256>),
@@ -139,6 +141,7 @@ impl fmt::Display for BlockError {
             InvalidSealArity(mis) => format!("Block seal in incorrect format: {}", mis),
             InvalidStateRoot(mis) => format!("Invalid state root in header: {}", mis),
             InvalidTransactionsRoot(mis) => format!("Invalid transactions root in header: {}", mis),
+            InvalidNextValidatorSetHash(mis) => format!("Invalid next validator set hash in header: {}", mis),
             ScoreOutOfBounds(oob) => format!("Invalid block score: {}", oob),
             InvalidScore(oob) => format!("Invalid block score: {}", oob),
             InvalidProofOfWork => "Invalid proof of work.".into(),
diff --git a/core/src/scheme/genesis.rs b/core/src/scheme/genesis.rs
index e346f81f61..d90a3566e2 100644
--- a/core/src/scheme/genesis.rs
+++ b/core/src/scheme/genesis.rs
@@ -37,6 +37,8 @@ pub struct Genesis {
     pub transactions_root: H256,
     /// State root.
     pub state_root: Option<H256>,
+    /// Next validator set hash.
+    pub next_validator_set_hash: Option<H256>,
     /// The genesis block's extra data field.
     pub extra_data: Bytes,
 }
@@ -51,6 +53,7 @@ impl From<cjson::scheme::Genesis> for Genesis {
             parent_hash: g.parent_hash.map_or_else(H256::zero, Into::into).into(),
             transactions_root: g.transactions_root.map_or_else(|| BLAKE_NULL_RLP, Into::into),
             state_root: g.state_root.map(Into::into),
+            next_validator_set_hash: g.next_validator_set_hash.map(Into::into),
             extra_data: g.extra_data.map_or_else(Vec::new, Into::into),
         }
     }
diff --git a/core/src/scheme/scheme.rs b/core/src/scheme/scheme.rs
index 5bce2dfdad..57f57ce3b6 100644
--- a/core/src/scheme/scheme.rs
+++ b/core/src/scheme/scheme.rs
@@ -266,6 +266,7 @@ impl Scheme {
         header.set_transactions_root(self.transactions_root);
         header.set_extra_data(blake256(&self.genesis_params().rlp_bytes()).to_vec());
         header.set_state_root(self.state_root());
+        header.set_next_validator_set_hash(BLAKE_NULL_RLP /* This will be calculated from state after https://github.com/CodeChain-io/foundry/issues/142*/);
         header.set_score(self.score);
         header.set_seal({
             let r = Rlp::new(&self.seal_rlp);
diff --git a/core/src/verification/verification.rs b/core/src/verification/verification.rs
index f8849657f3..42bb984993 100644
--- a/core/src/verification/verification.rs
+++ b/core/src/verification/verification.rs
@@ -265,5 +265,11 @@ pub fn verify_block_final(expected: &Header, got: &Header) -> Result<(), Error>
             found: *got.state_root(),
         })))
     }
+    if expected.next_validator_set_hash() != got.next_validator_set_hash() {
+        return Err(From::from(BlockError::InvalidNextValidatorSetHash(Mismatch {
+            expected: *expected.next_validator_set_hash(),
+            found: *got.next_validator_set_hash(),
+        })))
+    }
     Ok(())
 }
diff --git a/core/src/views/header.rs b/core/src/views/header.rs
index 8d9901c80f..2f8ff4e774 100644
--- a/core/src/views/header.rs
+++ b/core/src/views/header.rs
@@ -1,4 +1,4 @@
-// Copyright 2018-2019 Kodebox, Inc.
+// Copyright 2018-2020 Kodebox, Inc.
 // This file is part of CodeChain.
 //
 // This program is free software: you can redistribute it and/or modify
@@ -70,29 +70,34 @@ impl<'a> HeaderView<'a> {
         self.rlp.val_at(3).unwrap()
     }
 
+    /// Returns next validator set hash
+    pub fn next_validator_set_hash(&self) -> H256 {
+        self.rlp.val_at(4).unwrap()
+    }
+
     /// Returns block score.
     pub fn score(&self) -> U256 {
-        self.rlp.val_at(4).unwrap()
+        self.rlp.val_at(5).unwrap()
     }
 
     /// Returns block number.
     pub fn number(&self) -> BlockNumber {
-        self.rlp.val_at(5).unwrap()
+        self.rlp.val_at(6).unwrap()
     }
 
     /// Returns timestamp.
     pub fn timestamp(&self) -> u64 {
-        self.rlp.val_at(6).unwrap()
+        self.rlp.val_at(7).unwrap()
     }
 
     /// Returns block extra data.
     pub fn extra_data(&self) -> Bytes {
-        self.rlp.val_at(7).unwrap()
+        self.rlp.val_at(8).unwrap()
     }
 
     /// Returns a vector of post-RLP-encoded seal fields.
     pub fn seal(&self) -> Vec<Bytes> {
-        const SIZE_WITHOUT_SEAL: usize = 8;
+        const SIZE_WITHOUT_SEAL: usize = 9;
 
         let item_count = self.rlp.item_count().unwrap();
         let mut seal = Vec::with_capacity(item_count - SIZE_WITHOUT_SEAL);
diff --git a/json/src/scheme/genesis.rs b/json/src/scheme/genesis.rs
index 3ab8924f18..35dd826a1e 100644
--- a/json/src/scheme/genesis.rs
+++ b/json/src/scheme/genesis.rs
@@ -1,4 +1,4 @@
-// Copyright 2018-2019 Kodebox, Inc.
+// Copyright 2018-2020 Kodebox, Inc.
 // This file is part of CodeChain.
 //
 // This program is free software: you can redistribute it and/or modify
@@ -38,6 +38,8 @@ pub struct Genesis {
     pub transactions_root: Option<H256>,
     /// State root.
     pub state_root: Option<H256>,
+    /// Next validator set hash.
+    pub next_validator_set_hash: Option<H256>,
     /// Extra data.
     pub extra_data: Option<Bytes>,
 }
@@ -73,7 +75,8 @@ mod tests {
             "timestamp": "0x07",
             "parentHash": "0x9000000000000000000000000000000000000000000000000000000000000000",
             "extraData": "0x11bbe8db4e347b4e8c937c1c8370e4b5ed33adb3db69cbdb7a38e1e50b1b82fa",
-            "stateRoot": "0xd7f8974fb5ac78d9ac099b9ad5018bedc2ce0a72dad1827a1709da30580f0544"
+            "stateRoot": "0xd7f8974fb5ac78d9ac099b9ad5018bedc2ce0a72dad1827a1709da30580f0544",
+            "nextValidatorSetHash": "0xd7f8974fb5ac78d9ac099b9ad5018bedc2ce0a72dad1827a1709da30580f0544"
         }"#;
         let deserialized: Genesis = serde_json::from_str(s).unwrap();
         assert_eq!(deserialized, Genesis {
@@ -90,6 +93,7 @@ mod tests {
             parent_hash: Some(H256(Core256::from("0x9000000000000000000000000000000000000000000000000000000000000000"))),
             transactions_root: None,
             state_root: Some(H256(Core256::from("0xd7f8974fb5ac78d9ac099b9ad5018bedc2ce0a72dad1827a1709da30580f0544"))),
+            next_validator_set_hash: Some(H256(Core256::from("0xd7f8974fb5ac78d9ac099b9ad5018bedc2ce0a72dad1827a1709da30580f0544"))),
             extra_data: Some(Bytes::from_str("0x11bbe8db4e347b4e8c937c1c8370e4b5ed33adb3db69cbdb7a38e1e50b1b82fa").unwrap()),
         });
     }
diff --git a/rpc/src/v1/types/block.rs b/rpc/src/v1/types/block.rs
index 761f7710d6..24b2fc959a 100644
--- a/rpc/src/v1/types/block.rs
+++ b/rpc/src/v1/types/block.rs
@@ -1,4 +1,4 @@
-// Copyright 2018-2019 Kodebox, Inc.
+// Copyright 2018-2020 Kodebox, Inc.
 // This file is part of CodeChain.
 //
 // This program is free software: you can redistribute it and/or modify
@@ -32,6 +32,7 @@ pub struct Block {
 
     transactions_root: H256,
     state_root: H256,
+    next_validator_set_hash: H256,
 
     score: U256,
     seal: Vec<Vec<u8>>,
@@ -62,6 +63,7 @@ impl Block {
 
             transactions_root: *block.header.transactions_root(),
             state_root: *block.header.state_root(),
+            next_validator_set_hash: *block.header.next_validator_set_hash(),
 
             score: *block.header.score(),
             seal: block.header.seal().to_vec(),
diff --git a/test/package.json b/test/package.json
index 4295c93ee0..8f36426958 100644
--- a/test/package.json
+++ b/test/package.json
@@ -47,8 +47,8 @@
     "blakejs": "^1.1.0",
     "chai": "^4.2.0",
     "chai-as-promised": "^7.1.1",
-    "codechain-sdk": "^2.0.0-alpha.2",
-    "codechain-stakeholder-sdk": "https://github.com/majecty/codechain-stakeholder-sdk-js#v2.0.0-alpha.1",
+    "codechain-sdk": "https://github.com/junha1/codechain-sdk-js#test2.0.1",
+    "codechain-stakeholder-sdk": "https://github.com/junha1/codechain-stakeholder-sdk-js#master",
     "elliptic": "^6.4.1",
     "lodash": "^4.17.11",
     "mkdirp": "^0.5.1",
diff --git a/test/src/e2e.long/invalidBlockPropagation.helper.ts b/test/src/e2e.long/invalidBlockPropagation.helper.ts
index fb163377cb..a977cb8855 100644
--- a/test/src/e2e.long/invalidBlockPropagation.helper.ts
+++ b/test/src/e2e.long/invalidBlockPropagation.helper.ts
@@ -1,4 +1,4 @@
-// Copyright 2018-2019 Kodebox, Inc.
+// Copyright 2018-2020 Kodebox, Inc.
 // This file is part of CodeChain.
 //
 // This program is free software: you can redistribute it and/or modify
@@ -56,6 +56,7 @@ async function setup(): Promise<[Header, Block, Header]> {
         Buffer.from(block0.extraData),
         block0.transactionsRoot,
         block0.stateRoot,
+        block0.nextValidatorSetHash,
         block0.score,
         block0.seal
     );
@@ -67,6 +68,7 @@ async function setup(): Promise<[Header, Block, Header]> {
         Buffer.from(block1.extraData),
         block1.transactionsRoot,
         block1.stateRoot,
+        block1.nextValidatorSetHash,
         new U256(2222222222222),
         block1.seal
     );
@@ -78,6 +80,7 @@ async function setup(): Promise<[Header, Block, Header]> {
         Buffer.from(block2.extraData),
         block2.transactionsRoot,
         block2.stateRoot,
+        block2.nextValidatorSetHash,
         new U256(33333333333333),
         block2.seal
     );
@@ -113,6 +116,7 @@ async function testBody(
         textraData?: Buffer;
         ttransactionRoot?: H256;
         tstateRoot?: H256;
+        tnextValidatorSetHash?: H256;
         tscore?: U256;
         tseal?: number[][];
     }
@@ -125,6 +129,7 @@ async function testBody(
         tauthor,
         ttransactionRoot,
         tstateRoot,
+        tnextValidatorSetHash,
         tseal
     } = params;
 
@@ -139,6 +144,7 @@ async function testBody(
         Buffer.from(block1.extraData),
         block1.transactionsRoot,
         block1.stateRoot,
+        block1.nextValidatorSetHash,
         new U256(2222222222222),
         block1.seal
     );
@@ -161,6 +167,9 @@ async function testBody(
     if (tstateRoot != null) {
         header.setStateRoot(tstateRoot);
     }
+    if (tnextValidatorSetHash != null) {
+        header.setNextValidatorSetHash(tnextValidatorSetHash);
+    }
     if (tscore != null) {
         header.setScore(tscore);
     }
diff --git a/test/src/e2e.long/onChainBlockValid.test.ts b/test/src/e2e.long/onChainBlockValid.test.ts
index 67b9e9a5cf..1e874ecf1d 100644
--- a/test/src/e2e.long/onChainBlockValid.test.ts
+++ b/test/src/e2e.long/onChainBlockValid.test.ts
@@ -1,4 +1,4 @@
-// Copyright 2018-2019 Kodebox, Inc.
+// Copyright 2018-2020 Kodebox, Inc.
 // This file is part of CodeChain.
 //
 // This program is free software: you can redistribute it and/or modify
@@ -72,6 +72,7 @@ describe("Test onChain block communication", async function() {
             Buffer.from(genesisBlock.extraData),
             genesisBlock.transactionsRoot,
             genesisBlock.stateRoot,
+            genesisBlock.nextValidatorSetHash,
             genesisBlock.score,
             genesisBlock.seal
         );
@@ -83,6 +84,7 @@ describe("Test onChain block communication", async function() {
             Buffer.from(block1.extraData),
             block1.transactionsRoot,
             block1.stateRoot,
+            block1.nextValidatorSetHash,
             new U256(2222222222222),
             block1.seal
         );
@@ -94,6 +96,7 @@ describe("Test onChain block communication", async function() {
             Buffer.from(block2.extraData),
             block2.transactionsRoot,
             block2.stateRoot,
+            block2.nextValidatorSetHash,
             new U256(33333333333333),
             block2.seal
         );
diff --git a/test/src/helper/mock/cHeader.ts b/test/src/helper/mock/cHeader.ts
index a8f73a771f..b3cd1ceaa3 100644
--- a/test/src/helper/mock/cHeader.ts
+++ b/test/src/helper/mock/cHeader.ts
@@ -1,4 +1,4 @@
-// Copyright 2018-2019 Kodebox, Inc.
+// Copyright 2018-2020 Kodebox, Inc.
 // This file is part of CodeChain.
 //
 // This program is free software: you can redistribute it and/or modify
@@ -28,11 +28,13 @@ export class Header {
         const author = new H160(decodedmsg[1].toString("hex"));
         const stateRoot = new H256(decodedmsg[2].toString("hex"));
         const transactionsRoot = new H256(decodedmsg[3].toString("hex"));
-        const score = decodedmsg[4];
-        const number = new U256(parseInt(decodedmsg[5].toString("hex"), 16));
-        const timestamp = new U256(parseInt(decodedmsg[6].toString("hex"), 16));
-        const extraData = decodedmsg[7];
+        const nextValidatorSetHash = new H256(decodedmsg[4].toString("hex"));
+        const score = decodedmsg[5];
+        const number = new U256(parseInt(decodedmsg[6].toString("hex"), 16));
+        const timestamp = new U256(parseInt(decodedmsg[7].toString("hex"), 16));
+        const extraData = decodedmsg[8];
 
+        // Be careful of the order! Three roots have same types, so mistake on the order will not be catched by typechecker.
         const header = new Header(
             parentHash,
             timestamp,
@@ -41,11 +43,12 @@ export class Header {
             extraData,
             transactionsRoot,
             stateRoot,
+            nextValidatorSetHash,
             score,
             []
         );
 
-        for (let i = 8; i < decodedmsg.getLength(); i++) {
+        for (let i = 9; i < decodedmsg.getLength(); i++) {
             header.seal.push(decodedmsg[i]);
         }
 
@@ -58,6 +61,7 @@ export class Header {
     private extraData: Buffer;
     private transactionsRoot: H256;
     private stateRoot: H256;
+    private nextValidatorSetHash: H256;
     private score: U256;
     private seal: number[][];
     private hash: null | H256;
@@ -71,6 +75,7 @@ export class Header {
         extraData: Buffer,
         transactionsRoot: H256,
         stateRoot: H256,
+        nextValidatorSetHash: H256,
         score: U256,
         seal: number[][],
         hash?: H256,
@@ -83,6 +88,7 @@ export class Header {
         this.extraData = extraData;
         this.transactionsRoot = transactionsRoot;
         this.stateRoot = stateRoot;
+        this.nextValidatorSetHash = nextValidatorSetHash;
         this.score = score;
         this.seal = seal;
         this.hash = hash == null ? this.hashing() : hash;
@@ -117,6 +123,10 @@ export class Header {
         this.stateRoot = root;
     }
 
+    public setNextValidatorSetHash(root: H256) {
+        this.nextValidatorSetHash = root;
+    }
+
     public setScore(score: U256) {
         this.score = score;
     }
@@ -148,6 +158,7 @@ export class Header {
             Buffer.alloc(0),
             BLAKE_NULL_RLP,
             BLAKE_NULL_RLP,
+            BLAKE_NULL_RLP,
             new U256(
                 "0000000000000000000000000000000000000000000000000000000000000000"
             ),
@@ -161,6 +172,7 @@ export class Header {
             this.author.toEncodeObject(),
             this.stateRoot.toEncodeObject(),
             this.transactionsRoot.toEncodeObject(),
+            this.nextValidatorSetHash.toEncodeObject(),
             this.score.toEncodeObject(),
             this.number.toEncodeObject(),
             this.timestamp.toEncodeObject(),
diff --git a/test/src/helper/mock/index.ts b/test/src/helper/mock/index.ts
index ba9b316fc3..fe31673d73 100644
--- a/test/src/helper/mock/index.ts
+++ b/test/src/helper/mock/index.ts
@@ -1,4 +1,4 @@
-// Copyright 2018-2019 Kodebox, Inc.
+// Copyright 2018-2020 Kodebox, Inc.
 // This file is part of CodeChain.
 //
 // This program is free software: you can redistribute it and/or modify
@@ -416,6 +416,9 @@ export class Mock {
         const stateRoot = new H256(
             "09f943122bfbb85adda8209ba72514374f71826fd874e08855b64bc95498cb02"
         );
+        const nextValidatorSetHash = new H256(
+            "45b0cfc220ceec5b7c1c62c4d4193d38e4eba48e8815729ce75f9c0ab0e4c1c0"
+        );
         const score = new U256(131072);
         const seal: any[] = [];
         const header = new Header(
@@ -426,6 +429,7 @@ export class Mock {
             extraData,
             transactionsRoot,
             stateRoot,
+            nextValidatorSetHash,
             score,
             seal
         );
@@ -445,6 +449,9 @@ export class Mock {
         const stateRoot = new H256(
             "09f943122bfbb85adda8209ba72514374f71826fd874e08855b64bc95498cb02"
         );
+        const nextValidatorSetHash = new H256(
+            "45b0cfc220ceec5b7c1c62c4d4193d38e4eba48e8815729ce75f9c0ab0e4c1c0"
+        );
         const score = new U256(999999999999999);
         const seal: any[] = [];
         const header = new Header(
@@ -455,6 +462,7 @@ export class Mock {
             extraData,
             transactionsRoot,
             stateRoot,
+            nextValidatorSetHash,
             score,
             seal
         );
@@ -474,6 +482,9 @@ export class Mock {
         const stateRoot = new H256(
             "09f943122bfbb85adda8209ba72514374f71826fd874e08855b64bc95498cb02"
         );
+        const nextValidatorSetHash = new H256(
+            "45b0cfc220ceec5b7c1c62c4d4193d38e4eba48e8815729ce75f9c0ab0e4c1c0"
+        );
         const score = new U256(999999999999999);
         const seal: any[] = [];
         const header = new Header(
@@ -484,6 +495,7 @@ export class Mock {
             extraData,
             transactionsRoot,
             stateRoot,
+            nextValidatorSetHash,
             score,
             seal
         );
@@ -588,7 +600,7 @@ export class Mock {
             const block: any = RLP.decode(message.message);
             const oldOn: Parameters<typeof digest>[0] = {
                 step: {
-                    height: readUIntRLP(block[0][5]),
+                    height: readUIntRLP(block[0][6]),
                     view: message.view,
                     step: TendermintStep.Propose
                 },
@@ -597,9 +609,9 @@ export class Mock {
             const recovered = recoverSchnorr(digest(oldOn), signature);
             if (recovered === pub) {
                 const newHeader = [
-                    ...block[0].slice(0, 6),
-                    new U64(readUIntRLP(block[0][6]) + 1).toEncodeObject(), // timestamp
-                    ...block[0].slice(7)
+                    ...block[0].slice(0, 7),
+                    new U64(readUIntRLP(block[0][7]) + 1).toEncodeObject(), // timestamp
+                    ...block[0].slice(8)
                 ];
                 const newDigest = digest({
                     ...oldOn,
diff --git a/test/yarn.lock b/test/yarn.lock
index 9045151a26..470854d02b 100644
--- a/test/yarn.lock
+++ b/test/yarn.lock
@@ -3,25 +3,25 @@
 
 
 "@babel/code-frame@^7.0.0":
-  version "7.5.5"
-  resolved "https://registry.yarnpkg.com/@babel/code-frame/-/code-frame-7.5.5.tgz#bc0782f6d69f7b7d49531219699b988f669a8f9d"
-  integrity sha512-27d4lZoomVyo51VegxI20xZPuSHusqbQag/ztrBC7wegWoQ1nLREPVSKSW8byhTlzTKyNE4ifaTA6lCp7JjpFw==
+  version "7.8.3"
+  resolved "https://registry.yarnpkg.com/@babel/code-frame/-/code-frame-7.8.3.tgz#33e25903d7481181534e12ec0a25f16b6fcf419e"
+  integrity sha512-a9gxpmdXtZEInkCSHUJDLHZVBgb1QS0jhss4cPP93EW7s+uC5bikET2twEF3KV+7rDblJcmNvTR7VJejqd2C2g==
   dependencies:
-    "@babel/highlight" "^7.0.0"
+    "@babel/highlight" "^7.8.3"
 
-"@babel/highlight@^7.0.0":
-  version "7.5.0"
-  resolved "https://registry.yarnpkg.com/@babel/highlight/-/highlight-7.5.0.tgz#56d11312bd9248fa619591d02472be6e8cb32540"
-  integrity sha512-7dV4eu9gBxoM0dAnj/BCFDW9LFU0zvTrkq0ugM7pnHEgguOEeOz1so2ZghEdzviYzQEED0r4EAgpsBChKy1TRQ==
+"@babel/highlight@^7.8.3":
+  version "7.8.3"
+  resolved "https://registry.yarnpkg.com/@babel/highlight/-/highlight-7.8.3.tgz#28f173d04223eaaa59bc1d439a3836e6d1265797"
+  integrity sha512-PX4y5xQUvy0fnEVHrYOarRPXVWafSjTW9T0Hab8gVIawpl2Sj0ORyrygANq+KjcNlSSTw0YCLSNA8OyZ1I4yEg==
   dependencies:
     chalk "^2.0.0"
     esutils "^2.0.2"
     js-tokens "^4.0.0"
 
 "@types/bn.js@*":
-  version "4.11.5"
-  resolved "https://registry.yarnpkg.com/@types/bn.js/-/bn.js-4.11.5.tgz#40e36197433f78f807524ec623afcf0169ac81dc"
-  integrity sha512-AEAZcIZga0JgVMHNtl1CprA/hXX7/wPt79AgR4XqaDt7jyj3QWYw6LPoOiznPtugDmlubUnAahMs2PFxGcQrng==
+  version "4.11.6"
+  resolved "https://registry.yarnpkg.com/@types/bn.js/-/bn.js-4.11.6.tgz#c306c70d9358aaea33cd4eda092a742b9505967c"
+  integrity sha512-pqr857jrp2kPuO9uRjZ3PwnJTjoQy+fcdxvBTvHm6dkmEL9q+hDD/2j/0ELOBPtPnS8LjCX0gI9nbl8lVkadpg==
   dependencies:
     "@types/node" "*"
 
@@ -32,20 +32,15 @@
   dependencies:
     "@types/chai" "*"
 
-"@types/chai@*":
-  version "4.2.4"
-  resolved "https://registry.yarnpkg.com/@types/chai/-/chai-4.2.4.tgz#8936cffad3c96ec470a2dc26a38c3ba8b9b6f619"
-  integrity sha512-7qvf9F9tMTzo0akeswHPGqgUx/gIaJqrOEET/FCD8CFRkSUHlygQiM5yB6OvjrtdxBVLSyw7COJubsFYs0683g==
-
-"@types/chai@^4.2.5":
-  version "4.2.5"
-  resolved "https://registry.yarnpkg.com/@types/chai/-/chai-4.2.5.tgz#f8da153ebbe30babb0adc9a528b9ad32be3175a2"
-  integrity sha512-YvbLiIc0DbbhiANrfVObdkLEHJksQZVq0Uvfg550SRAKVYaEJy+V70j65BVe2WNp6E3HtKsUczeijHFCjba3og==
+"@types/chai@*", "@types/chai@^4.2.5":
+  version "4.2.8"
+  resolved "https://registry.yarnpkg.com/@types/chai/-/chai-4.2.8.tgz#c8d645506db0d15f4aafd4dfa873f443ad87ea59"
+  integrity sha512-U1bQiWbln41Yo6EeHMr+34aUhvrMVyrhn9lYfPSpLTCrZlGxU4Rtn1bocX+0p2Fc/Jkd2FanCEXdw0WNfHHM0w==
 
 "@types/elliptic@^6.4.10":
-  version "6.4.10"
-  resolved "https://registry.yarnpkg.com/@types/elliptic/-/elliptic-6.4.10.tgz#352078ebc911484e30fc0d1eca3e3c865bf0e8f8"
-  integrity sha512-9h+Bw+aNiLzcq9DGstHccNxSsJ5iNId7mzruid7+kwm7F1IGvb4rBOOPo3+twt9ZPhI3y+JJ2m1UfgU8cOEJuQ==
+  version "6.4.12"
+  resolved "https://registry.yarnpkg.com/@types/elliptic/-/elliptic-6.4.12.tgz#e8add831f9cc9a88d9d84b3733ff669b68eaa124"
+  integrity sha512-gP1KsqoouLJGH6IJa28x7PXb3cRqh83X8HCLezd2dF+XcAIMKYv53KV+9Zn6QA561E120uOqZBQ+Jy/cl+fviw==
   dependencies:
     "@types/bn.js" "*"
 
@@ -74,19 +69,19 @@
     "@types/node" "*"
 
 "@types/node@*":
-  version "12.12.6"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-12.12.6.tgz#a47240c10d86a9a57bb0c633f0b2e0aea9ce9253"
-  integrity sha512-FjsYUPzEJdGXjwKqSpE0/9QEh6kzhTAeObA54rn6j3rR4C/mzpI9L0KNfoeASSPMMdxIsoJuCLDWcM/rVjIsSA==
+  version "13.7.0"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-13.7.0.tgz#b417deda18cf8400f278733499ad5547ed1abec4"
+  integrity sha512-GnZbirvmqZUzMgkFn70c74OQpTTUcCzlhQliTzYjQMqg+hVKcDnxdL19Ne3UdYzdMA/+W3eb646FWn/ZaT1NfQ==
 
 "@types/node@^10.3.5":
-  version "10.17.4"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-10.17.4.tgz#8993a4fe3c4022fda66bf4ea660d615fc5659c6f"
-  integrity sha512-F2pgg+LcIr/elguz+x+fdBX5KeZXGUOp7TV8M0TVIrDezYLFRNt8oMTyps0VQ1kj5WGGoR18RdxnRDHXrIFHMQ==
+  version "10.17.14"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-10.17.14.tgz#b6c60ebf2fb5e4229fdd751ff9ddfae0f5f31541"
+  integrity sha512-G0UmX5uKEmW+ZAhmZ6PLTQ5eu/VPaT+d/tdLd5IFsKRPcbe6lPxocBtcYBFSaLaCW8O60AX90e91Nsp8lVHCNw==
 
 "@types/node@^12.12.12":
-  version "12.12.12"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-12.12.12.tgz#529bc3e73dbb35dd9e90b0a1c83606a9d3264bdb"
-  integrity sha512-MGuvYJrPU0HUwqF7LqvIj50RZUX23Z+m583KBygKYUZLlZ88n6w28XRNJRJgsHukLEnLz6w6SvxZoLgbr5wLqQ==
+  version "12.12.26"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-12.12.26.tgz#213e153babac0ed169d44a6d919501e68f59dea9"
+  integrity sha512-UmUm94/QZvU5xLcUlNR8hA7Ac+fGpO1EG/a8bcWVz0P0LqtxFmun9Y2bbtuckwGboWJIT70DoWq1r3hb56n3DA==
 
 "@types/seedrandom@^2.4.28":
   version "2.4.28"
@@ -109,200 +104,20 @@ JSONStream@^1.3.1:
     through ">=2.2.7 <3"
 
 ajv@^6.5.5:
-  version "6.10.2"
-  resolved "https://registry.yarnpkg.com/ajv/-/ajv-6.10.2.tgz#d3cea04d6b017b2894ad69040fec8b623eb4bd52"
-  integrity sha512-TXtUUEYHuaTEbLZWIKUr5pmBuhDLy+8KYtPYdcV8qC+pOZL+NKqYwvWSRrVXHn+ZmRRAu8vJTAznH7Oag6RVRw==
+  version "6.11.0"
+  resolved "https://registry.yarnpkg.com/ajv/-/ajv-6.11.0.tgz#c3607cbc8ae392d8a5a536f25b21f8e5f3f87fe9"
+  integrity sha512-nCprB/0syFYy9fVYU1ox1l2KN8S9I+tziH8D4zdZuLT3N6RMlGSGt5FSTpAiHB/Whv8Qs1cWHma1aMKZyaHRKA==
   dependencies:
-    fast-deep-equal "^2.0.1"
+    fast-deep-equal "^3.1.1"
     fast-json-stable-stringify "^2.0.0"
     json-schema-traverse "^0.4.1"
     uri-js "^4.2.2"
 
-ansi-bgblack@^0.1.1:
-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/ansi-bgblack/-/ansi-bgblack-0.1.1.tgz#a68ba5007887701b6aafbe3fa0dadfdfa8ee3ca2"
-  integrity sha1-poulAHiHcBtqr74/oNrf36juPKI=
-  dependencies:
-    ansi-wrap "0.1.0"
-
-ansi-bgblue@^0.1.1:
-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/ansi-bgblue/-/ansi-bgblue-0.1.1.tgz#67bdc04edc9b9b5278969da196dea3d75c8c3613"
-  integrity sha1-Z73ATtybm1J4lp2hlt6j11yMNhM=
-  dependencies:
-    ansi-wrap "0.1.0"
-
-ansi-bgcyan@^0.1.1:
-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/ansi-bgcyan/-/ansi-bgcyan-0.1.1.tgz#58489425600bde9f5507068dd969ebfdb50fe768"
-  integrity sha1-WEiUJWAL3p9VBwaN2Wnr/bUP52g=
-  dependencies:
-    ansi-wrap "0.1.0"
-
-ansi-bggreen@^0.1.1:
-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/ansi-bggreen/-/ansi-bggreen-0.1.1.tgz#4e3191248529943f4321e96bf131d1c13816af49"
-  integrity sha1-TjGRJIUplD9DIelr8THRwTgWr0k=
-  dependencies:
-    ansi-wrap "0.1.0"
-
-ansi-bgmagenta@^0.1.1:
-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/ansi-bgmagenta/-/ansi-bgmagenta-0.1.1.tgz#9b28432c076eaa999418672a3efbe19391c2c7a1"
-  integrity sha1-myhDLAduqpmUGGcqPvvhk5HCx6E=
-  dependencies:
-    ansi-wrap "0.1.0"
-
-ansi-bgred@^0.1.1:
-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/ansi-bgred/-/ansi-bgred-0.1.1.tgz#a76f92838382ba43290a6c1778424f984d6f1041"
-  integrity sha1-p2+Sg4OCukMpCmwXeEJPmE1vEEE=
-  dependencies:
-    ansi-wrap "0.1.0"
-
-ansi-bgwhite@^0.1.1:
-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/ansi-bgwhite/-/ansi-bgwhite-0.1.1.tgz#6504651377a58a6ececd0331994e480258e11ba8"
-  integrity sha1-ZQRlE3elim7OzQMxmU5IAljhG6g=
-  dependencies:
-    ansi-wrap "0.1.0"
-
-ansi-bgyellow@^0.1.1:
-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/ansi-bgyellow/-/ansi-bgyellow-0.1.1.tgz#c3fe2eb08cd476648029e6874d15a0b38f61d44f"
-  integrity sha1-w/4usIzUdmSAKeaHTRWgs49h1E8=
-  dependencies:
-    ansi-wrap "0.1.0"
-
-ansi-black@^0.1.1:
-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/ansi-black/-/ansi-black-0.1.1.tgz#f6185e889360b2545a1ec50c0bf063fc43032453"
-  integrity sha1-9hheiJNgslRaHsUMC/Bj/EMDJFM=
-  dependencies:
-    ansi-wrap "0.1.0"
-
-ansi-blue@^0.1.1:
-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/ansi-blue/-/ansi-blue-0.1.1.tgz#15b804990e92fc9ca8c5476ce8f699777c21edbf"
-  integrity sha1-FbgEmQ6S/JyoxUds6PaZd3wh7b8=
-  dependencies:
-    ansi-wrap "0.1.0"
-
-ansi-bold@^0.1.1:
-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/ansi-bold/-/ansi-bold-0.1.1.tgz#3e63950af5acc2ae2e670e6f67deb115d1a5f505"
-  integrity sha1-PmOVCvWswq4uZw5vZ96xFdGl9QU=
-  dependencies:
-    ansi-wrap "0.1.0"
-
 ansi-colors@3.2.3:
   version "3.2.3"
   resolved "https://registry.yarnpkg.com/ansi-colors/-/ansi-colors-3.2.3.tgz#57d35b8686e851e2cc04c403f1c00203976a1813"
   integrity sha512-LEHHyuhlPY3TmuUYMh2oz89lTShfvgbmzaBcxve9t/9Wuy7Dwf4yoAKcND7KFT1HAQfqZ12qtc+DUrBMeKF9nw==
 
-ansi-colors@^0.2.0:
-  version "0.2.0"
-  resolved "https://registry.yarnpkg.com/ansi-colors/-/ansi-colors-0.2.0.tgz#72c31de2a0d9a2ccd0cac30cc9823eeb2f6434b5"
-  integrity sha1-csMd4qDZoszQysMMyYI+6y9kNLU=
-  dependencies:
-    ansi-bgblack "^0.1.1"
-    ansi-bgblue "^0.1.1"
-    ansi-bgcyan "^0.1.1"
-    ansi-bggreen "^0.1.1"
-    ansi-bgmagenta "^0.1.1"
-    ansi-bgred "^0.1.1"
-    ansi-bgwhite "^0.1.1"
-    ansi-bgyellow "^0.1.1"
-    ansi-black "^0.1.1"
-    ansi-blue "^0.1.1"
-    ansi-bold "^0.1.1"
-    ansi-cyan "^0.1.1"
-    ansi-dim "^0.1.1"
-    ansi-gray "^0.1.1"
-    ansi-green "^0.1.1"
-    ansi-grey "^0.1.1"
-    ansi-hidden "^0.1.1"
-    ansi-inverse "^0.1.1"
-    ansi-italic "^0.1.1"
-    ansi-magenta "^0.1.1"
-    ansi-red "^0.1.1"
-    ansi-reset "^0.1.1"
-    ansi-strikethrough "^0.1.1"
-    ansi-underline "^0.1.1"
-    ansi-white "^0.1.1"
-    ansi-yellow "^0.1.1"
-    lazy-cache "^2.0.1"
-
-ansi-cyan@^0.1.1:
-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/ansi-cyan/-/ansi-cyan-0.1.1.tgz#538ae528af8982f28ae30d86f2f17456d2609873"
-  integrity sha1-U4rlKK+JgvKK4w2G8vF0VtJgmHM=
-  dependencies:
-    ansi-wrap "0.1.0"
-
-ansi-dim@^0.1.1:
-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/ansi-dim/-/ansi-dim-0.1.1.tgz#40de4c603aa8086d8e7a86b8ff998d5c36eefd6c"
-  integrity sha1-QN5MYDqoCG2Oeoa4/5mNXDbu/Ww=
-  dependencies:
-    ansi-wrap "0.1.0"
-
-ansi-gray@^0.1.1:
-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/ansi-gray/-/ansi-gray-0.1.1.tgz#2962cf54ec9792c48510a3deb524436861ef7251"
-  integrity sha1-KWLPVOyXksSFEKPetSRDaGHvclE=
-  dependencies:
-    ansi-wrap "0.1.0"
-
-ansi-green@^0.1.1:
-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/ansi-green/-/ansi-green-0.1.1.tgz#8a5d9a979e458d57c40e33580b37390b8e10d0f7"
-  integrity sha1-il2al55FjVfEDjNYCzc5C44Q0Pc=
-  dependencies:
-    ansi-wrap "0.1.0"
-
-ansi-grey@^0.1.1:
-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/ansi-grey/-/ansi-grey-0.1.1.tgz#59d98b6ac2ba19f8a51798e9853fba78339a33c1"
-  integrity sha1-WdmLasK6GfilF5jphT+6eDOaM8E=
-  dependencies:
-    ansi-wrap "0.1.0"
-
-ansi-hidden@^0.1.1:
-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/ansi-hidden/-/ansi-hidden-0.1.1.tgz#ed6a4c498d2bb7cbb289dbf2a8d1dcc8567fae0f"
-  integrity sha1-7WpMSY0rt8uyidvyqNHcyFZ/rg8=
-  dependencies:
-    ansi-wrap "0.1.0"
-
-ansi-inverse@^0.1.1:
-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/ansi-inverse/-/ansi-inverse-0.1.1.tgz#b6af45826fe826bfb528a6c79885794355ccd269"
-  integrity sha1-tq9Fgm/oJr+1KKbHmIV5Q1XM0mk=
-  dependencies:
-    ansi-wrap "0.1.0"
-
-ansi-italic@^0.1.1:
-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/ansi-italic/-/ansi-italic-0.1.1.tgz#104743463f625c142a036739cf85eda688986f23"
-  integrity sha1-EEdDRj9iXBQqA2c5z4XtpoiYbyM=
-  dependencies:
-    ansi-wrap "0.1.0"
-
-ansi-magenta@^0.1.1:
-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/ansi-magenta/-/ansi-magenta-0.1.1.tgz#063b5ba16fb3f23e1cfda2b07c0a89de11e430ae"
-  integrity sha1-BjtboW+z8j4c/aKwfAqJ3hHkMK4=
-  dependencies:
-    ansi-wrap "0.1.0"
-
-ansi-red@^0.1.1:
-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/ansi-red/-/ansi-red-0.1.1.tgz#8c638f9d1080800a353c9c28c8a81ca4705d946c"
-  integrity sha1-jGOPnRCAgAo1PJwoyKgcpHBdlGw=
-  dependencies:
-    ansi-wrap "0.1.0"
-
 ansi-regex@^2.0.0:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-2.1.1.tgz#c3b33ab5ee360d86e0e628f0468ae7ef27d654df"
@@ -318,20 +133,6 @@ ansi-regex@^4.1.0:
   resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-4.1.0.tgz#8b9f8f08cf1acb843756a839ca8c7e3168c51997"
   integrity sha512-1apePfXM1UOSqw0o9IiFAovVz9M5S1Dg+4TrDwfMewQ6p/rmMueb7tWZjQ1rx4Loy1ArBggoqGpfqqdI4rondg==
 
-ansi-reset@^0.1.1:
-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/ansi-reset/-/ansi-reset-0.1.1.tgz#e7e71292c3c7ddcd4d62ef4a6c7c05980911c3b7"
-  integrity sha1-5+cSksPH3c1NYu9KbHwFmAkRw7c=
-  dependencies:
-    ansi-wrap "0.1.0"
-
-ansi-strikethrough@^0.1.1:
-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/ansi-strikethrough/-/ansi-strikethrough-0.1.1.tgz#d84877140b2cff07d1c93ebce69904f68885e568"
-  integrity sha1-2Eh3FAss/wfRyT685pkE9oiF5Wg=
-  dependencies:
-    ansi-wrap "0.1.0"
-
 ansi-styles@^3.2.0, ansi-styles@^3.2.1:
   version "3.2.1"
   resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-3.2.1.tgz#41fbb20243e50b12be0f04b8dedbf07520ce841d"
@@ -339,32 +140,6 @@ ansi-styles@^3.2.0, ansi-styles@^3.2.1:
   dependencies:
     color-convert "^1.9.0"
 
-ansi-underline@^0.1.1:
-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/ansi-underline/-/ansi-underline-0.1.1.tgz#dfc920f4c97b5977ea162df8ffb988308aaa71a4"
-  integrity sha1-38kg9Ml7WXfqFi34/7mIMIqqcaQ=
-  dependencies:
-    ansi-wrap "0.1.0"
-
-ansi-white@^0.1.1:
-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/ansi-white/-/ansi-white-0.1.1.tgz#9c77b7c193c5ee992e6011d36ec4c921b4578944"
-  integrity sha1-nHe3wZPF7pkuYBHTbsTJIbRXiUQ=
-  dependencies:
-    ansi-wrap "0.1.0"
-
-ansi-wrap@0.1.0:
-  version "0.1.0"
-  resolved "https://registry.yarnpkg.com/ansi-wrap/-/ansi-wrap-0.1.0.tgz#a82250ddb0015e9a27ca82e82ea603bbfa45efaf"
-  integrity sha1-qCJQ3bABXponyoLoLqYDu/pF768=
-
-ansi-yellow@^0.1.1:
-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/ansi-yellow/-/ansi-yellow-0.1.1.tgz#cb9356f2f46c732f0e3199e6102955a77da83c1d"
-  integrity sha1-y5NW8vRscy8OMZnmEClVp32oPB0=
-  dependencies:
-    ansi-wrap "0.1.0"
-
 aproba@^1.0.3:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/aproba/-/aproba-1.2.0.tgz#6802e6264efd18c790a1b0d517f0f2627bf2c94a"
@@ -379,9 +154,9 @@ are-we-there-yet@~1.1.2:
     readable-stream "^2.0.6"
 
 arg@^4.1.0:
-  version "4.1.1"
-  resolved "https://registry.yarnpkg.com/arg/-/arg-4.1.1.tgz#485f8e7c390ce4c5f78257dbea80d4be11feda4c"
-  integrity sha512-SlmP3fEA88MBv0PypnXZ8ZfJhwmDeIE3SP71j37AiXQBXYosPV0x6uISAaHYSlSVhmHOVkomen0tbGk6Anlebw==
+  version "4.1.3"
+  resolved "https://registry.yarnpkg.com/arg/-/arg-4.1.3.tgz#269fc7ad5b8e42cb63c896d5666017261c144089"
+  integrity sha512-58S9QDqG0Xx27YwPSt9fJxivjYl432YCwfDMfZ+71RAqUrZef7LrKQZ3LHLOwCS4FLNBplP533Zx895SeOCHvA==
 
 argparse@^1.0.7:
   version "1.0.10"
@@ -390,18 +165,6 @@ argparse@^1.0.7:
   dependencies:
     sprintf-js "~1.0.2"
 
-arr-flatten@^1.1.0:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/arr-flatten/-/arr-flatten-1.1.0.tgz#36048bbff4e7b47e136644316c99669ea5ae91f1"
-  integrity sha512-L3hKV5R/p5o81R7O02IGnwpDmkp6E982XhtbuwSe3O4qOtMMMtodicASA1Cny2U+aCXcNpml+m4dPsvsJ3jatg==
-
-arr-swap@^1.0.1:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/arr-swap/-/arr-swap-1.0.1.tgz#147590ed65fc815bc07fef0997c2e5823d643534"
-  integrity sha1-FHWQ7WX8gVvAf+8Jl8Llgj1kNTQ=
-  dependencies:
-    is-number "^3.0.0"
-
 asn1@~0.2.3:
   version "0.2.4"
   resolved "https://registry.yarnpkg.com/asn1/-/asn1-0.2.4.tgz#8d2475dfab553bb33e77b54e59e880bb8ce23136"
@@ -430,9 +193,9 @@ aws-sign2@~0.7.0:
   integrity sha1-tG6JCTSpWR8tL2+G1+ap8bP+dqg=
 
 aws4@^1.8.0:
-  version "1.8.0"
-  resolved "https://registry.yarnpkg.com/aws4/-/aws4-1.8.0.tgz#f0e003d9ca9e7f59c7a508945d7b2ef9a04a542f"
-  integrity sha512-ReZxvNHIOv88FlT7rxcXIIC0fPt4KZqZbOlivyWtXLt8ESx84zd3kMC6iK5jVeS2qt+g7ftS7ye4fi06X5rtRQ==
+  version "1.9.1"
+  resolved "https://registry.yarnpkg.com/aws4/-/aws4-1.9.1.tgz#7e33d8f7d449b3f673cd72deb9abdc552dbe528e"
+  integrity sha512-wMHVg2EOHaMRxbzgFJ9gtjOOCrI80OHLG14rxi28XwOW8ux6IiEbRCGGGqCtdAIg4FQCbW20k9RsT4y3gJlFug==
 
 balanced-match@^1.0.0:
   version "1.0.0"
@@ -475,10 +238,10 @@ bindings@^1.3.1:
   dependencies:
     file-uri-to-path "1.0.0"
 
-bitcore-lib@^8.9.0:
-  version "8.9.0"
-  resolved "https://registry.yarnpkg.com/bitcore-lib/-/bitcore-lib-8.9.0.tgz#5715c9e830ec55121df94aa6c551880f819a37ac"
-  integrity sha512-r/Cm6WxfdzfS+Wbke6c5n+0NYSnK5B56UXxk7fo9T/rTyyPpAknalazwK7HQinaQ7x3kKjqhjKDCTiEB1p/vpA==
+bitcore-lib@^8.16.0:
+  version "8.16.0"
+  resolved "https://registry.yarnpkg.com/bitcore-lib/-/bitcore-lib-8.16.0.tgz#5e0f357d52e84246875a3a624de094775a88e20e"
+  integrity sha512-9tGPyX05VxrAVqA8/6YEG+LstEAVLOXN7U5p4U653Avo7Fi+Wv8W6CRXtzVYEslbQuWMc7sI2g/hZ1iBYCYPAA==
   dependencies:
     bech32 "=1.1.3"
     bn.js "=4.11.8"
@@ -489,11 +252,11 @@ bitcore-lib@^8.9.0:
     lodash "=4.17.15"
 
 bitcore-mnemonic@^8.6.0:
-  version "8.9.0"
-  resolved "https://registry.yarnpkg.com/bitcore-mnemonic/-/bitcore-mnemonic-8.9.0.tgz#328f0dd9e4feb3c44934d53c363bfd5086038809"
-  integrity sha512-iWkM7ZKWXY78BHTWYCEUe7ZFLuJdeWixANrJFUc05AW+2W//LJilPiQyQB7A7JpSBZWQi2Mwc6DdRP2hUYxXbA==
+  version "8.16.0"
+  resolved "https://registry.yarnpkg.com/bitcore-mnemonic/-/bitcore-mnemonic-8.16.0.tgz#7dd5579ea8a8b4d359d4b0b40fff3dc791a285e2"
+  integrity sha512-oVbxrv872rV6h9XGtFS4TdgxcxLRoy563MKBq9c/ewZ6fAJTDa17rxnpHA0dU5O835lRe84C3kXdO0QRBK/p5Q==
   dependencies:
-    bitcore-lib "^8.9.0"
+    bitcore-lib "^8.16.0"
     unorm "^1.4.1"
 
 bl@^3.0.0:
@@ -509,9 +272,9 @@ blakejs@^1.1.0:
   integrity sha1-ad+S75U6qIylGjLfarHFShVfx6U=
 
 bluebird@^3.5.0:
-  version "3.7.1"
-  resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-3.7.1.tgz#df70e302b471d7473489acf26a93d63b53f874de"
-  integrity sha512-DdmyoGCleJnkbp3nkbxTLJ18rjDsE4yCggEwKNXkeV123sPNfOCYeDoeuOY+F2FrSjO1YXcTU+dsy96KMy+gcg==
+  version "3.7.2"
+  resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-3.7.2.tgz#9f229c15be272454ffa973ace0dbee79a1b0c36f"
+  integrity sha512-XpNj6GDQzdfW+r2Wnn7xiSAd7TM3jzkxGXBGTtWKuSXv1xUV+azxAm8jdWZN06QTQk+2N2XB9jRDkvbmQmcRtg==
 
 bn.js@=4.11.8, bn.js@^4.11.1, bn.js@^4.11.8, bn.js@^4.4.0:
   version "4.11.8"
@@ -617,30 +380,11 @@ check-error@^1.0.2:
   resolved "https://registry.yarnpkg.com/check-error/-/check-error-1.0.2.tgz#574d312edd88bb5dd8912e9286dd6c0aed4aac82"
   integrity sha1-V00xLt2Iu13YkS6Sht1sCu1KrII=
 
-choices-separator@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/choices-separator/-/choices-separator-2.0.0.tgz#92fd1763182d79033f5c5c51d0ba352e5567c696"
-  integrity sha1-kv0XYxgteQM/XFxR0Lo1LlVnxpY=
-  dependencies:
-    ansi-dim "^0.1.1"
-    debug "^2.6.6"
-    strip-color "^0.1.0"
-
 chownr@^1.1.1:
   version "1.1.3"
   resolved "https://registry.yarnpkg.com/chownr/-/chownr-1.1.3.tgz#42d837d5239688d55f303003a508230fa6727142"
   integrity sha512-i70fVHhmV3DtTl6nqvZOnIjbY0Pe4kAUjwHj8z0zAdgBtYrJyYwLKCCuRBQ5ppkyL0AkN7HKRnETdmdp1zqNXw==
 
-cli-table3@^0.5.1:
-  version "0.5.1"
-  resolved "https://registry.yarnpkg.com/cli-table3/-/cli-table3-0.5.1.tgz#0252372d94dfc40dbd8df06005f48f31f656f202"
-  integrity sha512-7Qg2Jrep1S/+Q3EceiZtQcDPWxhAvBw+ERf1162v4sikJrvojMHFqXt8QIVha8UlH9rgU0BeWPytZ9/TzYqlUw==
-  dependencies:
-    object-assign "^4.1.0"
-    string-width "^2.1.1"
-  optionalDependencies:
-    colors "^1.1.2"
-
 cliui@^5.0.0:
   version "5.0.0"
   resolved "https://registry.yarnpkg.com/cliui/-/cliui-5.0.0.tgz#deefcfdb2e800784aa34f46fa08e06851c7bbbc5"
@@ -650,63 +394,28 @@ cliui@^5.0.0:
     strip-ansi "^5.2.0"
     wrap-ansi "^5.1.0"
 
-clone-deep@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/clone-deep/-/clone-deep-1.0.0.tgz#b2f354444b5d4a0ce58faca337ef34da2b14a6c7"
-  integrity sha512-hmJRX8x1QOJVV+GUjOBzi6iauhPqc9hIF6xitWRBbiPZOBb6vGo/mDRIK9P74RTKSQK7AE8B0DDWY/vpRrPmQw==
-  dependencies:
-    for-own "^1.0.0"
-    is-plain-object "^2.0.4"
-    kind-of "^5.0.0"
-    shallow-clone "^1.0.0"
-
-clone-deep@^4.0.0:
-  version "4.0.1"
-  resolved "https://registry.yarnpkg.com/clone-deep/-/clone-deep-4.0.1.tgz#c19fd9bdbbf85942b4fd979c84dcf7d5f07c2387"
-  integrity sha512-neHB9xuzh/wk0dIHweyAXv2aPGZIVk3pLMe+/RNzINf17fe0OG96QroktYAUm7SM1PBnzTabaLboqqxDyMU+SQ==
-  dependencies:
-    is-plain-object "^2.0.4"
-    kind-of "^6.0.2"
-    shallow-clone "^3.0.0"
-
 code-point-at@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/code-point-at/-/code-point-at-1.1.0.tgz#0d070b4d043a5bea33a2f1a40e2edb3d9a4ccf77"
   integrity sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c=
 
 codechain-keystore@^0.6.0:
-  version "0.6.2"
-  resolved "https://registry.yarnpkg.com/codechain-keystore/-/codechain-keystore-0.6.2.tgz#e377796fe28d8478df01bea9e308dae2a7304182"
-  integrity sha512-uLKUoPbTG5sYb7wnKx+bJ9pRfO/NloDycM24j1qF9LdK/D1psGqZ3XDplz2CCNTC6SV/htuT4l/DZOSynT86Hw==
+  version "0.6.3"
+  resolved "https://registry.yarnpkg.com/codechain-keystore/-/codechain-keystore-0.6.3.tgz#9042169dd03c9b67ff8e73253a009515dd1e58a5"
+  integrity sha512-bSUhuv9UIXoAKwSWhnylIhnU+BOypd7aqL0E8rPumS5qmsqUZgwMoKCfQBasCVpH+Hm+4fR0CSfVK/J7s/Hvfw==
   dependencies:
     bitcore-mnemonic "^8.6.0"
-    codechain-primitives "^0.3.0"
+    codechain-primitives "^1.0.0"
     config "^2.0.1"
     lodash "^4.17.10"
     lowdb "^1.0.0"
     lowdb-session-storage-adapter "^1.0.0"
     uuid "^3.3.2"
 
-codechain-primitives@^0.3.0:
-  version "0.3.5"
-  resolved "https://registry.yarnpkg.com/codechain-primitives/-/codechain-primitives-0.3.5.tgz#13bb72c341ea27a4640baee791609c28db18c29e"
-  integrity sha512-/S3QPobB5xLEKQsFu+uYiUofl5oIAQA0/BQsBiGwtzrrNsjD93QMLWQntysaaEF72gTBMsqEFDTjGP0u8hDviA==
-  dependencies:
-    bignumber.js "^7.2.1"
-    blakejs "^1.1.0"
-    bn.js "^4.11.8"
-    buffer "^5.2.1"
-    elliptic "^6.4.1"
-    hmac-drbg "^1.0.1"
-    lodash "^4.17.11"
-    node-forge "^0.7.6"
-    ripemd160 "^2.0.2"
-    rlp "^2.1.0"
-
-codechain-primitives@^1.0.0, codechain-primitives@^1.0.1:
-  version "1.0.3"
-  resolved "https://registry.yarnpkg.com/codechain-primitives/-/codechain-primitives-1.0.3.tgz#5ae9fa70d803eb109c4ba73f1d2f29275a55fcd9"
-  integrity sha512-B4C+xYj2gH4ukqdmUuWRIZnDz9ewR47q3efT0KPD5UCa/JP+5IG9pGIMDGAZDhJbxCDR6BAQe/SW9wiLm3LHXA==
+codechain-primitives@^1.0.0:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/codechain-primitives/-/codechain-primitives-1.0.4.tgz#26918fc5229c3fa0cc8c2d6ecda1ad3740292a4a"
+  integrity sha512-BOA+NL/iHuzp05DC8vLxC2vIMvIHPzREH4sgwcrQKKsnvTMf5frVdBQKBWl6Me2A4M7aa6T+wDe6pAD3WEoJ3w==
   dependencies:
     bignumber.js "^7.2.1"
     blakejs "^1.1.0"
@@ -719,10 +428,9 @@ codechain-primitives@^1.0.0, codechain-primitives@^1.0.1:
     node-forge "^0.7.6"
     rlp "^2.1.0"
 
-codechain-sdk@^2.0.0-alpha.2:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/codechain-sdk/-/codechain-sdk-2.0.0.tgz#8cddfde3d213cf43b95328b9c189c011e6477654"
-  integrity sha512-4jT4NRE93NMY0o9R08GlSgSaAkBNc3EzzuPEyMch4sWhkJGDvEbGABDHbNuSFP6VDwCGk74RXkKPSQg0Bx23Ag==
+"codechain-sdk@https://github.com/junha1/codechain-sdk-js#test2.0.1":
+  version "2.0.1"
+  resolved "https://github.com/junha1/codechain-sdk-js#b411cce8cb332da28a0b644eeb04bf6f31233e34"
   dependencies:
     buffer "5.1.0"
     codechain-keystore "^0.6.0"
@@ -734,24 +442,11 @@ codechain-sdk@^2.0.0-alpha.2:
     request-promise "^4.2.2"
     rlp "^2.0.0"
 
-"codechain-stakeholder-sdk@https://github.com/majecty/codechain-stakeholder-sdk-js#v2.0.0-alpha.1":
-  version "2.0.0-alpha.1"
-  resolved "https://github.com/majecty/codechain-stakeholder-sdk-js#ce02d99e7381a93aa9d6739792b140e4a95ebe7b"
+"codechain-stakeholder-sdk@https://github.com/junha1/codechain-stakeholder-sdk-js#master":
+  version "2.0.0"
+  resolved "https://github.com/junha1/codechain-stakeholder-sdk-js#836c47c1c91dd23e174f466406b0ad59e3f6c2af"
   dependencies:
-    cli-table3 "^0.5.1"
-    codechain-primitives "^1.0.1"
-    codechain-sdk "^2.0.0-alpha.2"
-    prompt-password "^1.2.0"
     rlp "^2.2.2"
-    yargs "^13.2.2"
-
-collection-visit@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/collection-visit/-/collection-visit-1.0.0.tgz#4bc0373c164bc3291b4d368c829cf1a80a59dca0"
-  integrity sha1-S8A3PBZLwykbTTaMgpzxqApZ3KA=
-  dependencies:
-    map-visit "^1.0.0"
-    object-visit "^1.0.0"
 
 color-convert@^1.9.0:
   version "1.9.3"
@@ -765,11 +460,6 @@ color-name@1.1.3:
   resolved "https://registry.yarnpkg.com/color-name/-/color-name-1.1.3.tgz#a7d0558bd89c42f795dd42328f740831ca53bc25"
   integrity sha1-p9BVi9icQveV3UIyj3QIMcpTvCU=
 
-colors@^1.1.2:
-  version "1.4.0"
-  resolved "https://registry.yarnpkg.com/colors/-/colors-1.4.0.tgz#c50491479d4c1bdaed2c9ced32cf7c7dc2360f78"
-  integrity sha512-a+UqTh4kgZg/SlGvfbzDHpgRu7AAQOmmqRHJnxhRZICKFUT91brVhNNt58CMWU9PsBbv3PDCZUHbVxuDiH2mtA==
-
 combined-stream@^1.0.6, combined-stream@~1.0.6:
   version "1.0.8"
   resolved "https://registry.yarnpkg.com/combined-stream/-/combined-stream-1.0.8.tgz#c3d45a8b34fd730631a110a8a2520682b31d5a7f"
@@ -782,11 +472,6 @@ commander@^2.12.1, commander@^2.12.2:
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.20.3.tgz#fd485e84c03eb4881c20722ba48035e8531aeb33"
   integrity sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ==
 
-component-emitter@^1.2.1:
-  version "1.3.0"
-  resolved "https://registry.yarnpkg.com/component-emitter/-/component-emitter-1.3.0.tgz#16e4070fba8ae29b679f2215853ee181ab2eabc0"
-  integrity sha512-Rd3se6QB+sO1TwqZjscQrurpEPIfO0/yYnSin6Q/rD3mOutHvUrCAhJub3r90uNb+SESBuE0QYoB90YdfatsRg==
-
 concat-map@0.0.1:
   version "0.0.1"
   resolved "https://registry.yarnpkg.com/concat-map/-/concat-map-0.0.1.tgz#d8a96bd77fd68df7793a73036a3ba0d5405d477b"
@@ -804,20 +489,15 @@ console-control-strings@^1.0.0, console-control-strings@~1.1.0:
   resolved "https://registry.yarnpkg.com/console-control-strings/-/console-control-strings-1.1.0.tgz#3d7cf4464db6446ea644bf4b39507f9851008e8e"
   integrity sha1-PXz0Rk22RG6mRL9LOVB/mFEAjo4=
 
-copy-descriptor@^0.1.0:
-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/copy-descriptor/-/copy-descriptor-0.1.1.tgz#676f6eb3c39997c2ee1ac3a924fd6124748f578d"
-  integrity sha1-Z29us8OZl8LuGsOpJP1hJHSPV40=
-
 core-util-is@1.0.2, core-util-is@~1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"
   integrity sha1-tf1UIgqivFq1eqtxQMlAdUUDwac=
 
 crypto-js@^3.1.9-1:
-  version "3.1.9-1"
-  resolved "https://registry.yarnpkg.com/crypto-js/-/crypto-js-3.1.9-1.tgz#fda19e761fc077e01ffbfdc6e9fdfc59e8806cd8"
-  integrity sha1-/aGedh/Ad+Af+/3G6f38WeiAbNg=
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/crypto-js/-/crypto-js-3.2.0.tgz#abe124867e49d2695e20fea091728276a9f761c0"
+  integrity sha512-J6LOZ2Iha4akgCwqTrZsCLdA5y/kJ1MxRoGzs/xtIfFSaLSs1gENHznVjYEzWZfunzt9yiViXq8bO1RyT1euhg==
 
 dashdash@^1.12.0:
   version "1.14.1"
@@ -826,20 +506,13 @@ dashdash@^1.12.0:
   dependencies:
     assert-plus "^1.0.0"
 
-debug@3.2.6, debug@^3.0.1:
+debug@3.2.6:
   version "3.2.6"
   resolved "https://registry.yarnpkg.com/debug/-/debug-3.2.6.tgz#e83d17de16d8a7efb7717edbe5fb10135eee629b"
   integrity sha512-mel+jf7nrtEl5Pn1Qx46zARXKDpBbvzezse7p7LqINmdoIk8PYP5SySaxEmYv6TZ0JyEKA1hsCId6DIhgITtWQ==
   dependencies:
     ms "^2.1.1"
 
-debug@^2.6.6, debug@^2.6.8:
-  version "2.6.9"
-  resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.9.tgz#5d128515df134ff327e90a4c93f4e077a536341f"
-  integrity sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==
-  dependencies:
-    ms "2.0.0"
-
 decamelize@^1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/decamelize/-/decamelize-1.2.0.tgz#f6534d15148269b20352e7bee26f501f9a191290"
@@ -871,28 +544,6 @@ define-properties@^1.1.2, define-properties@^1.1.3:
   dependencies:
     object-keys "^1.0.12"
 
-define-property@^0.2.5:
-  version "0.2.5"
-  resolved "https://registry.yarnpkg.com/define-property/-/define-property-0.2.5.tgz#c35b1ef918ec3c990f9a5bc57be04aacec5c8116"
-  integrity sha1-w1se+RjsPJkPmlvFe+BKrOxcgRY=
-  dependencies:
-    is-descriptor "^0.1.0"
-
-define-property@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/define-property/-/define-property-1.0.0.tgz#769ebaaf3f4a63aad3af9e8d304c9bbe79bfb0e6"
-  integrity sha1-dp66rz9KY6rTr56NMEybvnm/sOY=
-  dependencies:
-    is-descriptor "^1.0.0"
-
-define-property@^2.0.2:
-  version "2.0.2"
-  resolved "https://registry.yarnpkg.com/define-property/-/define-property-2.0.2.tgz#d459689e8d654ba77e02a817f8710d702cb16e9d"
-  integrity sha512-jwK2UV4cnPpbcG7+VRARKTZPUWowwXA8bzH5NP6ud0oeAxyYPuGZUAC7hMugpCdz4BeSZl2Dl9k66CHJ/46ZYQ==
-  dependencies:
-    is-descriptor "^1.0.2"
-    isobject "^3.0.1"
-
 delayed-stream@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/delayed-stream/-/delayed-stream-1.0.0.tgz#df3ae199acadfb7d440aaae0b29e2272b24ec619"
@@ -914,9 +565,9 @@ diff@3.5.0:
   integrity sha512-A46qtFgd+g7pDZinpnwiRJtxbC1hpgf0uzP3iG89scHk0AUC7A1TGxf5OiiOUv/JMZR8GOt8hL900hV0bOy5xA==
 
 diff@^4.0.1:
-  version "4.0.1"
-  resolved "https://registry.yarnpkg.com/diff/-/diff-4.0.1.tgz#0c667cb467ebbb5cea7f14f135cc2dba7780a8ff"
-  integrity sha512-s2+XdvhPCOF01LRQBC8hf4vhbVmI2CGS5aZnxLJlT5FtdhPCDFq80q++zK2KlrVorVDdL5BOGZ/VfLrVtYNF+Q==
+  version "4.0.2"
+  resolved "https://registry.yarnpkg.com/diff/-/diff-4.0.2.tgz#60f3aecb89d5fae520c11aa19efc2bb982aade7d"
+  integrity sha512-58lmxKSA4BNyLz+HHMUzlOEpg09FV+ev6ZMe3vJihgdxzgcwZ8VoEEPmALCZG9LmqfVoNMMKpttIYTVG6uDY7A==
 
 ecc-jsbn@~0.1.1:
   version "0.1.2"
@@ -940,9 +591,9 @@ elliptic@=6.4.0:
     minimalistic-crypto-utils "^1.0.0"
 
 elliptic@^6.4.1:
-  version "6.5.1"
-  resolved "https://registry.yarnpkg.com/elliptic/-/elliptic-6.5.1.tgz#c380f5f909bf1b9b4428d028cd18d3b0efd6b52b"
-  integrity sha512-xvJINNLbTeWQjrl6X+7eQCrIy/YPv5XCpKW6kB5mKvtnGILoLDcySuwomfdzt0BMdLNVnuRNTuzKNHj0bva1Cg==
+  version "6.5.2"
+  resolved "https://registry.yarnpkg.com/elliptic/-/elliptic-6.5.2.tgz#05c5678d7173c049d8ca433552224a495d0e3762"
+  integrity sha512-f4x70okzZbIQl/NSRLkI/+tteV/9WqL98zx+SQ69KbXxmVrmjwsNUPn/gYJJ0sHvEak24cZgHIPegRePAtA/xw==
   dependencies:
     bn.js "^4.4.0"
     brorand "^1.0.1"
@@ -964,31 +615,27 @@ end-of-stream@^1.1.0, end-of-stream@^1.4.1:
   dependencies:
     once "^1.4.0"
 
-error-symbol@^0.1.0:
-  version "0.1.0"
-  resolved "https://registry.yarnpkg.com/error-symbol/-/error-symbol-0.1.0.tgz#0a4dae37d600d15a29ba453d8ef920f1844333f6"
-  integrity sha1-Ck2uN9YA0VopukU9jvkg8YRDM/Y=
-
-es-abstract@^1.5.1:
-  version "1.16.0"
-  resolved "https://registry.yarnpkg.com/es-abstract/-/es-abstract-1.16.0.tgz#d3a26dc9c3283ac9750dca569586e976d9dcc06d"
-  integrity sha512-xdQnfykZ9JMEiasTAJZJdMWCQ1Vm00NBw79/AWi7ELfZuuPCSOMDZbT9mkOfSctVtfhb+sAAzrm+j//GjjLHLg==
+es-abstract@^1.17.0-next.1:
+  version "1.17.4"
+  resolved "https://registry.yarnpkg.com/es-abstract/-/es-abstract-1.17.4.tgz#e3aedf19706b20e7c2594c35fc0d57605a79e184"
+  integrity sha512-Ae3um/gb8F0mui/jPL+QiqmglkUsaQf7FwBEHYIFkztkneosu9imhqHpBzQ3h1vit8t5iQ74t6PEVvphBZiuiQ==
   dependencies:
-    es-to-primitive "^1.2.0"
+    es-to-primitive "^1.2.1"
     function-bind "^1.1.1"
     has "^1.0.3"
-    has-symbols "^1.0.0"
-    is-callable "^1.1.4"
-    is-regex "^1.0.4"
-    object-inspect "^1.6.0"
+    has-symbols "^1.0.1"
+    is-callable "^1.1.5"
+    is-regex "^1.0.5"
+    object-inspect "^1.7.0"
     object-keys "^1.1.1"
-    string.prototype.trimleft "^2.1.0"
-    string.prototype.trimright "^2.1.0"
+    object.assign "^4.1.0"
+    string.prototype.trimleft "^2.1.1"
+    string.prototype.trimright "^2.1.1"
 
-es-to-primitive@^1.2.0:
-  version "1.2.0"
-  resolved "https://registry.yarnpkg.com/es-to-primitive/-/es-to-primitive-1.2.0.tgz#edf72478033456e8dda8ef09e00ad9650707f377"
-  integrity sha512-qZryBOJjV//LaxLTV6UC//WewneB3LcXOL9NP++ozKVXsIIIpm/2c13UDiD9Jp2eThsecw9m3jPqDwTyobcdbg==
+es-to-primitive@^1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/es-to-primitive/-/es-to-primitive-1.2.1.tgz#e55cd4c9cdc188bcefb03b366c736323fc5c898a"
+  integrity sha512-QCOllgZJtaUo9miYBcLChTUaHNjJF3PYs1VidD7AwiEj1kYxKeQTctLAezAOH5ZKRH0g2IgPn6KwB4IT8iRpvA==
   dependencies:
     is-callable "^1.1.4"
     is-date-object "^1.0.1"
@@ -1026,13 +673,6 @@ expand-template@^2.0.3:
   resolved "https://registry.yarnpkg.com/expand-template/-/expand-template-2.0.3.tgz#6e14b3fcee0f3a6340ecb57d2e8918692052a47c"
   integrity sha512-XYfuKMvj4O35f/pOXLObndIRvyQ+/+6AhODh+OKWj9S9498pHHn/IMszH+gt0fBCRWMNfk1ZSp5x3AifmnI2vg==
 
-extend-shallow@^2.0.1:
-  version "2.0.1"
-  resolved "https://registry.yarnpkg.com/extend-shallow/-/extend-shallow-2.0.1.tgz#51af7d614ad9a9f610ea1bafbb989d6b1c56890f"
-  integrity sha1-Ua99YUrZqfYQ6huvu5idaxxWiQ8=
-  dependencies:
-    is-extendable "^0.1.0"
-
 extend@~3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/extend/-/extend-3.0.2.tgz#f8b1136b4071fbd8eb140aff858b1019ec2915fa"
@@ -1053,15 +693,15 @@ eyes@^0.1.8:
   resolved "https://registry.yarnpkg.com/eyes/-/eyes-0.1.8.tgz#62cf120234c683785d902348a800ef3e0cc20bc0"
   integrity sha1-Ys8SAjTGg3hdkCNIqADvPgzCC8A=
 
-fast-deep-equal@^2.0.1:
-  version "2.0.1"
-  resolved "https://registry.yarnpkg.com/fast-deep-equal/-/fast-deep-equal-2.0.1.tgz#7b05218ddf9667bf7f370bf7fdb2cb15fdd0aa49"
-  integrity sha1-ewUhjd+WZ79/Nwv3/bLLFf3Qqkk=
+fast-deep-equal@^3.1.1:
+  version "3.1.1"
+  resolved "https://registry.yarnpkg.com/fast-deep-equal/-/fast-deep-equal-3.1.1.tgz#545145077c501491e33b15ec408c294376e94ae4"
+  integrity sha512-8UEa58QDLauDNfpbrX55Q9jrGHThw2ZMdOky5Gl1CDtVeJDPVrG4Jxx1N8jw2gkWaff5UUuX1KJd+9zGe2B+ZA==
 
 fast-json-stable-stringify@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/fast-json-stable-stringify/-/fast-json-stable-stringify-2.0.0.tgz#d5142c0caee6b1189f87d3a76111064f86c8bbf2"
-  integrity sha1-1RQsDK7msRifh9OnYREGT4bIu/I=
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/fast-json-stable-stringify/-/fast-json-stable-stringify-2.1.0.tgz#874bf69c6f404c2b5d99c481341399fd55892633"
+  integrity sha512-lhd/wF+Lk98HZoTCtlVraHtfh5XYijIjalXck7saUtuanSDyLMxnHhSXEDJqHxD7msR8D0uCmqlkwjCV8xvwHw==
 
 file-uri-to-path@1.0.0:
   version "1.0.0"
@@ -1082,23 +722,6 @@ flat@^4.1.0:
   dependencies:
     is-buffer "~2.0.3"
 
-for-in@^0.1.3:
-  version "0.1.8"
-  resolved "https://registry.yarnpkg.com/for-in/-/for-in-0.1.8.tgz#d8773908e31256109952b1fdb9b3fa867d2775e1"
-  integrity sha1-2Hc5COMSVhCZUrH9ubP6hn0ndeE=
-
-for-in@^1.0.1:
-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/for-in/-/for-in-1.0.2.tgz#81068d295a8142ec0ac726c6e2200c30fb6d5e80"
-  integrity sha1-gQaNKVqBQuwKxybG4iAMMPttXoA=
-
-for-own@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/for-own/-/for-own-1.0.0.tgz#c63332f415cedc4b04dbfe70cf836494c53cb44b"
-  integrity sha1-xjMy9BXO3EsE2/5wz4NklMU8tEs=
-  dependencies:
-    for-in "^1.0.1"
-
 forever-agent@~0.6.1:
   version "0.6.1"
   resolved "https://registry.yarnpkg.com/forever-agent/-/forever-agent-0.6.1.tgz#fbc71f0c41adeb37f96c577ad1ed42d8fdacca91"
@@ -1216,31 +839,23 @@ has-flag@^3.0.0:
   resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-3.0.0.tgz#b5d454dc2199ae225699f3467e5a07f3b955bafd"
   integrity sha1-tdRU3CGZriJWmfNGfloH87lVuv0=
 
-has-symbols@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/has-symbols/-/has-symbols-1.0.0.tgz#ba1a8f1af2a0fc39650f5c850367704122063b44"
-  integrity sha1-uhqPGvKg/DllD1yFA2dwQSIGO0Q=
+has-symbols@^1.0.0, has-symbols@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/has-symbols/-/has-symbols-1.0.1.tgz#9f5214758a44196c406d9bd76cebf81ec2dd31e8"
+  integrity sha512-PLcsoqu++dmEIZB+6totNFKq/7Do+Z0u4oT0zKOJNl3lYK6vGwwu2hjHs+68OEZbTjiUE9bgOABXbP/GvrS0Kg==
 
 has-unicode@^2.0.0:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/has-unicode/-/has-unicode-2.0.1.tgz#e0e6fe6a28cf51138855e086d1691e771de2a8b9"
   integrity sha1-4Ob+aijPUROIVeCG0Wkedx3iqLk=
 
-has@^1.0.1, has@^1.0.3:
+has@^1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/has/-/has-1.0.3.tgz#722d7cbfc1f6aa8241f16dd814e011e1f41e8796"
   integrity sha512-f2dvO0VU6Oej7RkWJGrehjbzMAjFp5/VKPp5tTpWIV4JHHZK1/BxbFRtf/siA2SWTe09caDmVtYYzWEIbBS4zw==
   dependencies:
     function-bind "^1.1.1"
 
-hash-base@^3.0.0:
-  version "3.0.4"
-  resolved "https://registry.yarnpkg.com/hash-base/-/hash-base-3.0.4.tgz#5fc8686847ecd73499403319a6b0a3f3f6ae4918"
-  integrity sha1-X8hoaEfs1zSZQDMZprCj8/auSRg=
-  dependencies:
-    inherits "^2.0.1"
-    safe-buffer "^5.0.1"
-
 hash.js@^1.0.0, hash.js@^1.0.3:
   version "1.1.7"
   resolved "https://registry.yarnpkg.com/hash.js/-/hash.js-1.1.7.tgz#0babca538e8d4ee4a0f8988d68866537a003cf42"
@@ -1285,11 +900,6 @@ inflight@^1.0.4:
     once "^1.3.0"
     wrappy "1"
 
-info-symbol@^0.1.0:
-  version "0.1.0"
-  resolved "https://registry.yarnpkg.com/info-symbol/-/info-symbol-0.1.0.tgz#27841d72867ddb4242cd612d79c10633881c6a78"
-  integrity sha1-J4QdcoZ920JCzWEtecEGM4gcang=
-
 inherits@2, inherits@^2.0.1, inherits@^2.0.3, inherits@~2.0.3:
   version "2.0.4"
   resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.4.tgz#0fa2c64f932917c3433a0ded55363aae37416b7c"
@@ -1305,76 +915,20 @@ ini@~1.3.0:
   resolved "https://registry.yarnpkg.com/ini/-/ini-1.3.5.tgz#eee25f56db1c9ec6085e0c22778083f596abf927"
   integrity sha512-RZY5huIKCMRWDUqZlEi72f/lmXKMvuszcMBduliQ3nnWbx9X/ZBQO7DijMEYS9EhHBb2qacRUMtC7svLwe0lcw==
 
-is-accessor-descriptor@^0.1.6:
-  version "0.1.6"
-  resolved "https://registry.yarnpkg.com/is-accessor-descriptor/-/is-accessor-descriptor-0.1.6.tgz#a9e12cb3ae8d876727eeef3843f8a0897b5c98d6"
-  integrity sha1-qeEss66Nh2cn7u84Q/igiXtcmNY=
-  dependencies:
-    kind-of "^3.0.2"
-
-is-accessor-descriptor@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/is-accessor-descriptor/-/is-accessor-descriptor-1.0.0.tgz#169c2f6d3df1f992618072365c9b0ea1f6878656"
-  integrity sha512-m5hnHTkcVsPfqx3AKlyttIPb7J+XykHvJP2B9bZDjlhLIoEq4XoK64Vg7boZlVWYK6LUY94dYPEE7Lh0ZkZKcQ==
-  dependencies:
-    kind-of "^6.0.0"
-
-is-buffer@^1.1.5:
-  version "1.1.6"
-  resolved "https://registry.yarnpkg.com/is-buffer/-/is-buffer-1.1.6.tgz#efaa2ea9daa0d7ab2ea13a97b2b8ad51fefbe8be"
-  integrity sha512-NcdALwpXkTm5Zvvbk7owOUSvVvBKDgKP5/ewfXEznmQFfs4ZRmanOeKBTjRVjka3QFoN6XJ+9F3USqfHqTaU5w==
-
 is-buffer@~2.0.3:
   version "2.0.4"
   resolved "https://registry.yarnpkg.com/is-buffer/-/is-buffer-2.0.4.tgz#3e572f23c8411a5cfd9557c849e3665e0b290623"
   integrity sha512-Kq1rokWXOPXWuaMAqZiJW4XxsmD9zGx9q4aePabbn3qCRGedtH7Cm+zV8WETitMfu1wdh+Rvd6w5egwSngUX2A==
 
-is-callable@^1.1.4:
-  version "1.1.4"
-  resolved "https://registry.yarnpkg.com/is-callable/-/is-callable-1.1.4.tgz#1e1adf219e1eeb684d691f9d6a05ff0d30a24d75"
-  integrity sha512-r5p9sxJjYnArLjObpjA4xu5EKI3CuKHkJXMhT7kwbpUyIFD1n5PMAsoPvWnvtZiNz7LjkYDRZhd7FlI0eMijEA==
-
-is-data-descriptor@^0.1.4:
-  version "0.1.4"
-  resolved "https://registry.yarnpkg.com/is-data-descriptor/-/is-data-descriptor-0.1.4.tgz#0b5ee648388e2c860282e793f1856fec3f301b56"
-  integrity sha1-C17mSDiOLIYCgueT8YVv7D8wG1Y=
-  dependencies:
-    kind-of "^3.0.2"
-
-is-data-descriptor@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/is-data-descriptor/-/is-data-descriptor-1.0.0.tgz#d84876321d0e7add03990406abbbbd36ba9268c7"
-  integrity sha512-jbRXy1FmtAoCjQkVmIVYwuuqDFUbaOeDjmed1tOGPrsMhtJA4rD9tkgA0F1qJ3gRFRXcHYVkdeaP50Q5rE/jLQ==
-  dependencies:
-    kind-of "^6.0.0"
+is-callable@^1.1.4, is-callable@^1.1.5:
+  version "1.1.5"
+  resolved "https://registry.yarnpkg.com/is-callable/-/is-callable-1.1.5.tgz#f7e46b596890456db74e7f6e976cb3273d06faab"
+  integrity sha512-ESKv5sMCJB2jnHTWZ3O5itG+O128Hsus4K4Qh1h2/cgn2vbgnLSVqfV46AeJA9D5EeeLa9w81KUXMtn34zhX+Q==
 
 is-date-object@^1.0.1:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/is-date-object/-/is-date-object-1.0.1.tgz#9aa20eb6aeebbff77fbd33e74ca01b33581d3a16"
-  integrity sha1-mqIOtq7rv/d/vTPnTKAbM1gdOhY=
-
-is-descriptor@^0.1.0:
-  version "0.1.6"
-  resolved "https://registry.yarnpkg.com/is-descriptor/-/is-descriptor-0.1.6.tgz#366d8240dde487ca51823b1ab9f07a10a78251ca"
-  integrity sha512-avDYr0SB3DwO9zsMov0gKCESFYqCnE4hq/4z3TdUlukEy5t9C0YRq7HLrsN52NAcqXKaepeCD0n+B0arnVG3Hg==
-  dependencies:
-    is-accessor-descriptor "^0.1.6"
-    is-data-descriptor "^0.1.4"
-    kind-of "^5.0.0"
-
-is-descriptor@^1.0.0, is-descriptor@^1.0.2:
   version "1.0.2"
-  resolved "https://registry.yarnpkg.com/is-descriptor/-/is-descriptor-1.0.2.tgz#3b159746a66604b04f8c81524ba365c5f14d86ec"
-  integrity sha512-2eis5WqQGV7peooDyLmNEPUrps9+SXX5c9pL3xEB+4e9HnGuDa7mB7kHxHw4CbqS9k1T2hOH3miL8n8WtiYVtg==
-  dependencies:
-    is-accessor-descriptor "^1.0.0"
-    is-data-descriptor "^1.0.0"
-    kind-of "^6.0.2"
-
-is-extendable@^0.1.0, is-extendable@^0.1.1:
-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/is-extendable/-/is-extendable-0.1.1.tgz#62b110e289a471418e3ec36a617d472e301dfc89"
-  integrity sha1-YrEQ4omkcUGOPsNqYX1HLjAd/Ik=
+  resolved "https://registry.yarnpkg.com/is-date-object/-/is-date-object-1.0.2.tgz#bda736f2cd8fd06d32844e7743bfa7494c3bfd7e"
+  integrity sha512-USlDT524woQ08aoZFzh3/Z6ch9Y/EWXEHQ/AaRN0SkKq4t2Jw2R2339tSXmwuVoY7LLlBCbOIlx2myP/L5zk0g==
 
 is-fullwidth-code-point@^1.0.0:
   version "1.0.0"
@@ -1388,54 +942,30 @@ is-fullwidth-code-point@^2.0.0:
   resolved "https://registry.yarnpkg.com/is-fullwidth-code-point/-/is-fullwidth-code-point-2.0.0.tgz#a3b30a5c4f199183167aaab93beefae3ddfb654f"
   integrity sha1-o7MKXE8ZkYMWeqq5O+764937ZU8=
 
-is-number@^3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/is-number/-/is-number-3.0.0.tgz#24fd6201a4782cf50561c810276afc7d12d71195"
-  integrity sha1-JP1iAaR4LPUFYcgQJ2r8fRLXEZU=
-  dependencies:
-    kind-of "^3.0.2"
-
-is-number@^6.0.0:
-  version "6.0.0"
-  resolved "https://registry.yarnpkg.com/is-number/-/is-number-6.0.0.tgz#e6d15ad31fc262887cccf217ae5f9316f81b1995"
-  integrity sha512-Wu1VHeILBK8KAWJUAiSZQX94GmOE45Rg6/538fKwiloUu21KncEkYGPqob2oSZ5mUT73vLGrHQjKw3KMPwfDzg==
-
-is-plain-object@^2.0.4:
-  version "2.0.4"
-  resolved "https://registry.yarnpkg.com/is-plain-object/-/is-plain-object-2.0.4.tgz#2c163b3fafb1b606d9d17928f05c2a1c38e07677"
-  integrity sha512-h5PpgXkWitc38BBMYawTYMWJHFZJVnBquFE57xFpjB8pJFiF6gZ+bU+WyI/yqXiFR5mdLsgYNaPe8uao6Uv9Og==
-  dependencies:
-    isobject "^3.0.1"
-
 is-promise@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/is-promise/-/is-promise-2.1.0.tgz#79a2a9ece7f096e80f36d2b2f3bc16c1ff4bf3fa"
   integrity sha1-eaKp7OfwlugPNtKy87wWwf9L8/o=
 
-is-regex@^1.0.4:
-  version "1.0.4"
-  resolved "https://registry.yarnpkg.com/is-regex/-/is-regex-1.0.4.tgz#5517489b547091b0930e095654ced25ee97e9491"
-  integrity sha1-VRdIm1RwkbCTDglWVM7SXul+lJE=
+is-regex@^1.0.5:
+  version "1.0.5"
+  resolved "https://registry.yarnpkg.com/is-regex/-/is-regex-1.0.5.tgz#39d589a358bf18967f726967120b8fc1aed74eae"
+  integrity sha512-vlKW17SNq44owv5AQR3Cq0bQPEb8+kF3UKZ2fiZNOWtztYE5i0CzCZxFDwO58qAOWtxdBRVO/V5Qin1wjCqFYQ==
   dependencies:
-    has "^1.0.1"
+    has "^1.0.3"
 
 is-symbol@^1.0.2:
-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/is-symbol/-/is-symbol-1.0.2.tgz#a055f6ae57192caee329e7a860118b497a950f38"
-  integrity sha512-HS8bZ9ox60yCJLH9snBpIwv9pYUAkcuLhSA1oero1UB5y9aiQpRA8y2ex945AOtCZL1lJDeIk3G5LthswI46Lw==
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/is-symbol/-/is-symbol-1.0.3.tgz#38e1014b9e6329be0de9d24a414fd7441ec61937"
+  integrity sha512-OwijhaRSgqvhm/0ZdAcXNZt9lYdKFpcRDT5ULUuYXPoT794UNOdU+gpT6Rzo7b4V2HUl/op6GqY894AZwv9faQ==
   dependencies:
-    has-symbols "^1.0.0"
+    has-symbols "^1.0.1"
 
 is-typedarray@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/is-typedarray/-/is-typedarray-1.0.0.tgz#e479c80858df0c1b11ddda6940f96011fcda4a9a"
   integrity sha1-5HnICFjfDBsR3dppQPlgEfzaSpo=
 
-is-windows@^1.0.1:
-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/is-windows/-/is-windows-1.0.2.tgz#d1850eb9791ecd18e6182ce12a30f396634bb19d"
-  integrity sha512-eXK1UInq2bPmjyX6e3VHIzMLobc4J94i4AWn+Hpq3OU5KkrRC96OAcR3PRJ/pGu6m8TRnBHP9dkXQVsT/COVIA==
-
 isarray@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/isarray/-/isarray-1.0.0.tgz#bb935d48582cba168c06834957a54a3e07124f11"
@@ -1446,11 +976,6 @@ isexe@^2.0.0:
   resolved "https://registry.yarnpkg.com/isexe/-/isexe-2.0.0.tgz#e8fbf374dc556ff8947a10dcb0572d633f2cfa10"
   integrity sha1-6PvzdNxVb/iUehDcsFctYz8s+hA=
 
-isobject@^3.0.0, isobject@^3.0.1:
-  version "3.0.1"
-  resolved "https://registry.yarnpkg.com/isobject/-/isobject-3.0.1.tgz#4e431e92b11a9731636aa1f9c8d1ccbcfdab78df"
-  integrity sha1-TkMekrEalzFjaqH5yNHMvP2reN8=
-
 isstream@~0.1.2:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/isstream/-/isstream-0.1.2.tgz#47e63f7af55afa6f92e1500e690eb8b8529c099a"
@@ -1525,35 +1050,6 @@ jsprim@^1.2.2:
     json-schema "0.2.3"
     verror "1.10.0"
 
-kind-of@^3.0.2, kind-of@^3.0.3:
-  version "3.2.2"
-  resolved "https://registry.yarnpkg.com/kind-of/-/kind-of-3.2.2.tgz#31ea21a734bab9bbb0f32466d893aea51e4a3c64"
-  integrity sha1-MeohpzS6ubuw8yRm2JOupR5KPGQ=
-  dependencies:
-    is-buffer "^1.1.5"
-
-kind-of@^5.0.0, kind-of@^5.0.2:
-  version "5.1.0"
-  resolved "https://registry.yarnpkg.com/kind-of/-/kind-of-5.1.0.tgz#729c91e2d857b7a419a1f9aa65685c4c33f5845d"
-  integrity sha512-NGEErnH6F2vUuXDh+OlbcKW7/wOcfdRHaZ7VWtqCztfHri/++YKmP51OdWeGPuqCOba6kk2OTe5d02VmTB80Pw==
-
-kind-of@^6.0.0, kind-of@^6.0.2:
-  version "6.0.2"
-  resolved "https://registry.yarnpkg.com/kind-of/-/kind-of-6.0.2.tgz#01146b36a6218e64e58f3a8d66de5d7fc6f6d051"
-  integrity sha512-s5kLOcnH0XqDO+FvuaLX8DDjZ18CGFk7VygH40QoKPUQhW4e2rvM0rwUq0t8IQDOwYSeLK01U90OjzBTme2QqA==
-
-koalas@^1.0.2:
-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/koalas/-/koalas-1.0.2.tgz#318433f074235db78fae5661a02a8ca53ee295cd"
-  integrity sha1-MYQz8HQjXbePrlZhoCqMpT7ilc0=
-
-lazy-cache@^2.0.1:
-  version "2.0.2"
-  resolved "https://registry.yarnpkg.com/lazy-cache/-/lazy-cache-2.0.2.tgz#b9190a4f913354694840859f8a8f7084d8822264"
-  integrity sha1-uRkKT5EzVGlIQIWfio9whNiCImQ=
-  dependencies:
-    set-getter "^0.1.0"
-
 locate-path@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/locate-path/-/locate-path-3.0.0.tgz#dbec3b3ab759758071b58fe59fc41871af21400e"
@@ -1567,14 +1063,6 @@ lodash@4, lodash@=4.17.15, lodash@^4.17.10, lodash@^4.17.11, lodash@^4.17.14, lo
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.15.tgz#b447f6670a0455bbfeedd11392eff330ea097548"
   integrity sha512-8xOcRHvCjnocdS5cpwXQXVzmmh5e5+saE2QGoeQmbKmRS6J3VQppPOIt0MnmE+4xlZoumy0GPG0D0MVIQbNA1A==
 
-log-ok@^0.1.1:
-  version "0.1.1"
-  resolved "https://registry.yarnpkg.com/log-ok/-/log-ok-0.1.1.tgz#bea3dd36acd0b8a7240d78736b5b97c65444a334"
-  integrity sha1-vqPdNqzQuKckDXhza1uXxlREozQ=
-  dependencies:
-    ansi-green "^0.1.1"
-    success-symbol "^0.1.0"
-
 log-symbols@2.2.0:
   version "2.2.0"
   resolved "https://registry.yarnpkg.com/log-symbols/-/log-symbols-2.2.0.tgz#5740e1c5d6f0dfda4ad9323b5332107ef6b4c40a"
@@ -1582,19 +1070,6 @@ log-symbols@2.2.0:
   dependencies:
     chalk "^2.0.1"
 
-log-utils@^0.2.1:
-  version "0.2.1"
-  resolved "https://registry.yarnpkg.com/log-utils/-/log-utils-0.2.1.tgz#a4c217a0dd9a50515d9b920206091ab3d4e031cf"
-  integrity sha1-pMIXoN2aUFFdm5ICBgkas9TgMc8=
-  dependencies:
-    ansi-colors "^0.2.0"
-    error-symbol "^0.1.0"
-    info-symbol "^0.1.0"
-    log-ok "^0.1.1"
-    success-symbol "^0.1.0"
-    time-stamp "^1.0.1"
-    warning-symbol "^0.1.0"
-
 lowdb-session-storage-adapter@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/lowdb-session-storage-adapter/-/lowdb-session-storage-adapter-1.0.0.tgz#6f5e563adbf482ac39c6937f55db6757eb01c0f3"
@@ -1618,24 +1093,17 @@ make-error@^1.1.1:
   resolved "https://registry.yarnpkg.com/make-error/-/make-error-1.3.5.tgz#efe4e81f6db28cadd605c70f29c831b58ef776c8"
   integrity sha512-c3sIjNUow0+8swNwVpqoH4YCShKNFkMaw6oH1mNS2haDZQqkeZFlHS3dhoeEbKKmJB4vXpJucU6oH75aDYeE9g==
 
-map-visit@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/map-visit/-/map-visit-1.0.0.tgz#ecdca8f13144e660f1b5bd41f12f3479d98dfb8f"
-  integrity sha1-7Nyo8TFE5mDxtb1B8S80edmN+48=
-  dependencies:
-    object-visit "^1.0.0"
-
-mime-db@1.40.0:
-  version "1.40.0"
-  resolved "https://registry.yarnpkg.com/mime-db/-/mime-db-1.40.0.tgz#a65057e998db090f732a68f6c276d387d4126c32"
-  integrity sha512-jYdeOMPy9vnxEqFRRo6ZvTZ8d9oPb+k18PKoYNYUe2stVEBPPwsln/qWzdbmaIvnhZ9v2P+CuecK+fpUfsV2mA==
+mime-db@1.43.0:
+  version "1.43.0"
+  resolved "https://registry.yarnpkg.com/mime-db/-/mime-db-1.43.0.tgz#0a12e0502650e473d735535050e7c8f4eb4fae58"
+  integrity sha512-+5dsGEEovYbT8UY9yD7eE4XTc4UwJ1jBYlgaQQF38ENsKR3wj/8q8RFZrF9WIZpB2V1ArTVFUva8sAul1NzRzQ==
 
 mime-types@^2.1.12, mime-types@~2.1.19:
-  version "2.1.24"
-  resolved "https://registry.yarnpkg.com/mime-types/-/mime-types-2.1.24.tgz#b6f8d0b3e951efb77dedeca194cff6d16f676f81"
-  integrity sha512-WaFHS3MCl5fapm3oLxU4eYDw77IQM2ACcxQ9RIxfaC3ooc6PFuBMGZZsYpvoXS5D5QTWPieo1jjLdAm3TBP3cQ==
+  version "2.1.26"
+  resolved "https://registry.yarnpkg.com/mime-types/-/mime-types-2.1.26.tgz#9c921fc09b7e149a65dfdc0da4d20997200b0a06"
+  integrity sha512-01paPWYgLrkqAyrlDorC1uDwl2p3qZT7yl806vW7DvDoxwXi46jsjFbg+WdwotBIk6/MbEhO/dh5aZ5sNj/dWQ==
   dependencies:
-    mime-db "1.40.0"
+    mime-db "1.43.0"
 
 mimic-response@^2.0.0:
   version "2.0.0"
@@ -1669,14 +1137,6 @@ minimist@^1.2.0:
   resolved "https://registry.yarnpkg.com/minimist/-/minimist-1.2.0.tgz#a35008b20f41383eec1fb914f4cd5df79a264284"
   integrity sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ=
 
-mixin-object@^2.0.1:
-  version "2.0.1"
-  resolved "https://registry.yarnpkg.com/mixin-object/-/mixin-object-2.0.1.tgz#4fb949441dab182540f1fe035ba60e1947a5e57e"
-  integrity sha1-T7lJRB2rGCVA8f4DW6YOGUel5X4=
-  dependencies:
-    for-in "^0.1.3"
-    is-extendable "^0.1.1"
-
 mkdirp@0.5.1, mkdirp@^0.5.1:
   version "0.5.1"
   resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-0.5.1.tgz#30057438eac6cf7f8c4767f38648d6697d75c903"
@@ -1713,11 +1173,6 @@ mocha@^6.2.2:
     yargs-parser "13.1.1"
     yargs-unparser "1.6.0"
 
-ms@2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/ms/-/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
-  integrity sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g=
-
 ms@2.1.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.1.tgz#30a5864eb3ebb0a66f2ebe6d727af06a09d86e0a"
@@ -1728,11 +1183,6 @@ ms@^2.1.1:
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.2.tgz#d09d1f357b443f493382a8eb3ccd183872ae6009"
   integrity sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==
 
-mute-stream@0.0.7:
-  version "0.0.7"
-  resolved "https://registry.yarnpkg.com/mute-stream/-/mute-stream-0.0.7.tgz#3075ce93bc21b8fab43e1bc4da7e8115ed1e7bab"
-  integrity sha1-MHXOk7whuPq0PhvE2n6BFe0ee6s=
-
 nan@^2.14.0:
   version "2.14.0"
   resolved "https://registry.yarnpkg.com/nan/-/nan-2.14.0.tgz#7818f722027b2459a86f0295d434d1fc2336c52c"
@@ -1754,9 +1204,9 @@ net@^1.0.2:
   integrity sha1-0XV+yaf7I3HYPPR1XOPifhCCk4g=
 
 node-abi@^2.7.0:
-  version "2.12.0"
-  resolved "https://registry.yarnpkg.com/node-abi/-/node-abi-2.12.0.tgz#40e9cfabdda1837863fa825e7dfa0b15686adf6f"
-  integrity sha512-VhPBXCIcvmo/5K8HPmnWJyyhvgKxnHTUMXR/XwGHV68+wrgkzST4UmQrY/XszSWA5dtnXpNp528zkcyJ/pzVcw==
+  version "2.14.0"
+  resolved "https://registry.yarnpkg.com/node-abi/-/node-abi-2.14.0.tgz#24650e24e8ffad2b61352519263f0cf4e2ddbfe9"
+  integrity sha512-y54KGgEOHnRHlGQi7E5UiryRkH8bmksmQLj/9iLAjoje743YS+KaKB/sDYXgqtT0J16JT3c3AYJZNI98aU/kYg==
   dependencies:
     semver "^5.4.1"
 
@@ -1808,33 +1258,17 @@ object-assign@^4.1.0:
   resolved "https://registry.yarnpkg.com/object-assign/-/object-assign-4.1.1.tgz#2109adc7965887cfc05cbbd442cac8bfbb360863"
   integrity sha1-IQmtx5ZYh8/AXLvUQsrIv7s2CGM=
 
-object-copy@^0.1.0:
-  version "0.1.0"
-  resolved "https://registry.yarnpkg.com/object-copy/-/object-copy-0.1.0.tgz#7e7d858b781bd7c991a41ba975ed3812754e998c"
-  integrity sha1-fn2Fi3gb18mRpBupde04EnVOmYw=
-  dependencies:
-    copy-descriptor "^0.1.0"
-    define-property "^0.2.5"
-    kind-of "^3.0.3"
-
-object-inspect@^1.6.0:
-  version "1.6.0"
-  resolved "https://registry.yarnpkg.com/object-inspect/-/object-inspect-1.6.0.tgz#c70b6cbf72f274aab4c34c0c82f5167bf82cf15b"
-  integrity sha512-GJzfBZ6DgDAmnuaM3104jR4s1Myxr3Y3zfIyN4z3UdqN69oSRacNK8UhnobDdC+7J2AHCjGwxQubNJfE70SXXQ==
+object-inspect@^1.7.0:
+  version "1.7.0"
+  resolved "https://registry.yarnpkg.com/object-inspect/-/object-inspect-1.7.0.tgz#f4f6bd181ad77f006b5ece60bd0b6f398ff74a67"
+  integrity sha512-a7pEHdh1xKIAgTySUGgLMx/xwDZskN1Ud6egYYN3EdRW4ZMPNEDUTF+hwy2LUC+Bl+SyLXANnwz/jyh/qutKUw==
 
 object-keys@^1.0.11, object-keys@^1.0.12, object-keys@^1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/object-keys/-/object-keys-1.1.1.tgz#1c47f272df277f3b1daf061677d9c82e2322c60e"
   integrity sha512-NuAESUOUMrlIXOfHKzD6bpPu3tYt3xvjNdRIQ+FeT0lNb4K8WR70CaDxhuNguS2XG+GjkyMwOzsN5ZktImfhLA==
 
-object-visit@^1.0.0:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/object-visit/-/object-visit-1.0.1.tgz#f79c4493af0c5377b59fe39d395e41042dd045bb"
-  integrity sha1-95xEk68MU3e1n+OdOV5BBC3QRbs=
-  dependencies:
-    isobject "^3.0.0"
-
-object.assign@4.1.0:
+object.assign@4.1.0, object.assign@^4.1.0:
   version "4.1.0"
   resolved "https://registry.yarnpkg.com/object.assign/-/object.assign-4.1.0.tgz#968bf1100d7956bb3ca086f006f846b3bc4008da"
   integrity sha512-exHJeq6kBKj58mqGyTQ9DFvrZC/eR6OwxzoM9YRoGBqrXYonaFyGiFMuc9VZrXf7DarreEwMpurG3dd+CNyW5w==
@@ -1845,12 +1279,12 @@ object.assign@4.1.0:
     object-keys "^1.0.11"
 
 object.getownpropertydescriptors@^2.0.3:
-  version "2.0.3"
-  resolved "https://registry.yarnpkg.com/object.getownpropertydescriptors/-/object.getownpropertydescriptors-2.0.3.tgz#8758c846f5b407adab0f236e0986f14b051caa16"
-  integrity sha1-h1jIRvW0B62rDyNuCYbxSwUcqhY=
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/object.getownpropertydescriptors/-/object.getownpropertydescriptors-2.1.0.tgz#369bf1f9592d8ab89d712dced5cb81c7c5352649"
+  integrity sha512-Z53Oah9A3TdLoblT7VKJaTDdXdT+lQO+cNpKVnya5JDe9uLvzu1YyY1yFDFrcxrlRgWrEFH0jJtD/IbuwjcEVg==
   dependencies:
-    define-properties "^1.1.2"
-    es-abstract "^1.5.1"
+    define-properties "^1.1.3"
+    es-abstract "^1.17.0-next.1"
 
 once@^1.3.0, once@^1.3.1, once@^1.4.0:
   version "1.4.0"
@@ -1860,9 +1294,9 @@ once@^1.3.0, once@^1.3.1, once@^1.4.0:
     wrappy "1"
 
 p-limit@^2.0.0:
-  version "2.2.1"
-  resolved "https://registry.yarnpkg.com/p-limit/-/p-limit-2.2.1.tgz#aa07a788cc3151c939b5131f63570f0dd2009537"
-  integrity sha512-85Tk+90UCVWvbDavCLKPOLC9vvY8OwEX/RtKF+/1OADJMVlFfEHOiMTPVyxg7mk/dKa+ipdHm0OUkTvCpMTuwg==
+  version "2.2.2"
+  resolved "https://registry.yarnpkg.com/p-limit/-/p-limit-2.2.2.tgz#61279b67721f5287aa1c13a9a7fbbc48c9291b1e"
+  integrity sha512-WGR+xHecKTr7EbUEhyLSh5Dube9JtdiG78ufaeLxTgpudf/20KqyMioIUZJAezlTIi6evxuoUs9YXc11cU+yzQ==
   dependencies:
     p-try "^2.0.0"
 
@@ -1908,11 +1342,6 @@ pify@^3.0.0:
   resolved "https://registry.yarnpkg.com/pify/-/pify-3.0.0.tgz#e5a4acd2c101fdf3d9a4d07f0dbc4db49dd28176"
   integrity sha1-5aSs0sEB/fPZpNB/DbxNtJ3SgXY=
 
-pointer-symbol@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/pointer-symbol/-/pointer-symbol-1.0.0.tgz#60f9110204ea7a929b62644a21315543cbb3d447"
-  integrity sha1-YPkRAgTqepKbYmRKITFVQ8uz1Ec=
-
 prebuild-install@^5.2.2:
   version "5.3.3"
   resolved "https://registry.yarnpkg.com/prebuild-install/-/prebuild-install-5.3.3.tgz#ef4052baac60d465f5ba6bf003c9c1de79b9da8e"
@@ -1944,75 +1373,10 @@ process-nextick-args@~2.0.0:
   resolved "https://registry.yarnpkg.com/process-nextick-args/-/process-nextick-args-2.0.1.tgz#7820d9b16120cc55ca9ae7792680ae7dba6d7fe2"
   integrity sha512-3ouUOpQhtgrbOa17J7+uxOTpITYWaGP7/AhoR3+A+/1e9skrzelGi/dXzEYyvbxubEF6Wn2ypscTKiKJFFn1ag==
 
-prompt-actions@^3.0.2:
-  version "3.0.2"
-  resolved "https://registry.yarnpkg.com/prompt-actions/-/prompt-actions-3.0.2.tgz#537eee52241c940379f354a06eae8528e44ceeba"
-  integrity sha512-dhz2Fl7vK+LPpmnQ/S/eSut4BnH4NZDLyddHKi5uTU/2PDn3grEMGkgsll16V5RpVUh/yxdiam0xsM0RD4xvtg==
-  dependencies:
-    debug "^2.6.8"
-
-prompt-base@^4.0.2:
-  version "4.1.0"
-  resolved "https://registry.yarnpkg.com/prompt-base/-/prompt-base-4.1.0.tgz#7b88e4c01b096c83d2f4e501a7e85f0d369ecd1f"
-  integrity sha512-svGzgLUKZoqomz9SGMkf1hBG8Wl3K7JGuRCXc/Pv7xw8239hhaTBXrmjt7EXA9P/QZzdyT8uNWt9F/iJTXq75g==
-  dependencies:
-    component-emitter "^1.2.1"
-    debug "^3.0.1"
-    koalas "^1.0.2"
-    log-utils "^0.2.1"
-    prompt-actions "^3.0.2"
-    prompt-question "^5.0.1"
-    readline-ui "^2.2.3"
-    readline-utils "^2.2.3"
-    static-extend "^0.1.2"
-
-prompt-choices@^4.0.5:
-  version "4.1.0"
-  resolved "https://registry.yarnpkg.com/prompt-choices/-/prompt-choices-4.1.0.tgz#6094202c4e55d0762e49c1e53735727e53fd484f"
-  integrity sha512-ZNYLv6rW9z9n0WdwCkEuS+w5nUAGzRgtRt6GQ5aFNFz6MIcU7nHFlHOwZtzy7RQBk80KzUGPSRQphvMiQzB8pg==
-  dependencies:
-    arr-flatten "^1.1.0"
-    arr-swap "^1.0.1"
-    choices-separator "^2.0.0"
-    clone-deep "^4.0.0"
-    collection-visit "^1.0.0"
-    define-property "^2.0.2"
-    is-number "^6.0.0"
-    kind-of "^6.0.2"
-    koalas "^1.0.2"
-    log-utils "^0.2.1"
-    pointer-symbol "^1.0.0"
-    radio-symbol "^2.0.0"
-    set-value "^3.0.0"
-    strip-color "^0.1.0"
-    terminal-paginator "^2.0.2"
-    toggle-array "^1.0.1"
-
-prompt-password@^1.2.0:
-  version "1.2.0"
-  resolved "https://registry.yarnpkg.com/prompt-password/-/prompt-password-1.2.0.tgz#87dba4afd5c34954e511c2c069fb922dab60b718"
-  integrity sha512-lBehk9YPGLxH9hAJ+VU7Bj/ePi9t5kPL/1ZBGZ2fLrDX1QeaBwi4RtQggZrsbMalGJaXaAuo/7VOa7QvbE2hAQ==
-  dependencies:
-    debug "^2.6.8"
-    prompt-base "^4.0.2"
-
-prompt-question@^5.0.1:
-  version "5.0.2"
-  resolved "https://registry.yarnpkg.com/prompt-question/-/prompt-question-5.0.2.tgz#81a479f38f0bafecc758e5d6f7bc586e599610b3"
-  integrity sha512-wreaLbbu8f5+7zXds199uiT11Ojp59Z4iBi6hONlSLtsKGTvL2UY8VglcxQ3t/X4qWIxsNCg6aT4O8keO65v6Q==
-  dependencies:
-    clone-deep "^1.0.0"
-    debug "^3.0.1"
-    define-property "^1.0.0"
-    isobject "^3.0.1"
-    kind-of "^5.0.2"
-    koalas "^1.0.2"
-    prompt-choices "^4.0.5"
-
 psl@^1.1.24, psl@^1.1.28:
-  version "1.4.0"
-  resolved "https://registry.yarnpkg.com/psl/-/psl-1.4.0.tgz#5dd26156cdb69fa1fdb8ab1991667d3f80ced7c2"
-  integrity sha512-HZzqCGPecFLyoRj5HLfuDSKYTJkAfB5thKBIkRHtGjWwY7p1dAyveIbXIq4tO0KYfDF2tHqPUgY9SDnGm00uFw==
+  version "1.7.0"
+  resolved "https://registry.yarnpkg.com/psl/-/psl-1.7.0.tgz#f1c4c47a8ef97167dea5d6bbf4816d736e884a3c"
+  integrity sha512-5NsSEDv8zY70ScRnOTn7bK7eanl2MvFrOrS/R6x+dBt5g1ghnj9Zv90kO8GwT8gxcu2ANyFprnFYB85IogIJOQ==
 
 pump@^3.0.0:
   version "3.0.0"
@@ -2037,15 +1401,6 @@ qs@~6.5.2:
   resolved "https://registry.yarnpkg.com/qs/-/qs-6.5.2.tgz#cb3ae806e8740444584ef154ce8ee98d403f3e36"
   integrity sha512-N5ZAX4/LxJmF+7wN74pUD6qAh9/wnvdQcjq9TZjevvXzSUo7bfmw91saqMjzGS2xq91/odN2dW/WOl7qQHNDGA==
 
-radio-symbol@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/radio-symbol/-/radio-symbol-2.0.0.tgz#7aa9bfc50485636d52dd76d6a8e631b290799ae1"
-  integrity sha1-eqm/xQSFY21S3XbWqOYxspB5muE=
-  dependencies:
-    ansi-gray "^0.1.1"
-    ansi-green "^0.1.1"
-    is-windows "^1.0.1"
-
 rc@^1.2.7:
   version "1.2.8"
   resolved "https://registry.yarnpkg.com/rc/-/rc-1.2.8.tgz#cd924bf5200a075b83c188cd6b9e211b7fc0d3ed"
@@ -2057,9 +1412,9 @@ rc@^1.2.7:
     strip-json-comments "~2.0.1"
 
 readable-stream@^2.0.6:
-  version "2.3.6"
-  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-2.3.6.tgz#b11c27d88b8ff1fbe070643cf94b0c79ae1b0aaf"
-  integrity sha512-tQtKA9WIAhBF3+VLAseyMqZeBjW0AHJoxOtYqSUZNJxauErmLbVm2FW1y+J/YA9dUrAC39ITejlZWhVIwawkKw==
+  version "2.3.7"
+  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-2.3.7.tgz#1eca1cf711aef814c04f62252a36a62f6cb23b57"
+  integrity sha512-Ebho8K4jIbHAxnuxi7o42OrZgF/ZTNcsZj6nRKyUmkhLFq8CHItp/fy6hQZuZmP/n3yZ9VBUbp4zz/mX8hmYPw==
   dependencies:
     core-util-is "~1.0.0"
     inherits "~2.0.3"
@@ -2070,39 +1425,14 @@ readable-stream@^2.0.6:
     util-deprecate "~1.0.1"
 
 readable-stream@^3.0.1, readable-stream@^3.1.1:
-  version "3.4.0"
-  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-3.4.0.tgz#a51c26754658e0a3c21dbf59163bd45ba6f447fc"
-  integrity sha512-jItXPLmrSR8jmTRmRWJXCnGJsfy85mB3Wd/uINMXA65yrnFo0cPClFIUWzo2najVNSl+mx7/4W8ttlLWJe99pQ==
+  version "3.5.0"
+  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-3.5.0.tgz#465d70e6d1087f6162d079cd0b5db7fbebfd1606"
+  integrity sha512-gSz026xs2LfxBPudDuI41V1lka8cxg64E66SGe78zJlsUofOg/yqwezdIcdfwik6B4h8LFmWPA9ef9X3FiNFLA==
   dependencies:
     inherits "^2.0.3"
     string_decoder "^1.1.1"
     util-deprecate "^1.0.1"
 
-readline-ui@^2.2.3:
-  version "2.2.3"
-  resolved "https://registry.yarnpkg.com/readline-ui/-/readline-ui-2.2.3.tgz#9e873a7668bbd8ca8a5573ce810a6bafb70a5089"
-  integrity sha512-ix7jz0PxqQqcIuq3yQTHv1TOhlD2IHO74aNO+lSuXsRYm1d+pdyup1yF3zKyLK1wWZrVNGjkzw5tUegO2IDy+A==
-  dependencies:
-    component-emitter "^1.2.1"
-    debug "^2.6.8"
-    readline-utils "^2.2.1"
-    string-width "^2.0.0"
-
-readline-utils@^2.2.1, readline-utils@^2.2.3:
-  version "2.2.3"
-  resolved "https://registry.yarnpkg.com/readline-utils/-/readline-utils-2.2.3.tgz#6f847d6b8f1915c391b581c367cd47873862351a"
-  integrity sha1-b4R9a48ZFcORtYHDZ81HhzhiNRo=
-  dependencies:
-    arr-flatten "^1.1.0"
-    extend-shallow "^2.0.1"
-    is-buffer "^1.1.5"
-    is-number "^3.0.0"
-    is-windows "^1.0.1"
-    koalas "^1.0.2"
-    mute-stream "0.0.7"
-    strip-color "^0.1.0"
-    window-size "^1.1.0"
-
 request-promise-core@1.1.3:
   version "1.1.3"
   resolved "https://registry.yarnpkg.com/request-promise-core/-/request-promise-core-1.1.3.tgz#e9a3c081b51380dfea677336061fea879a829ee9"
@@ -2157,20 +1487,12 @@ require-main-filename@^2.0.0:
   integrity sha512-NKN5kMDylKuldxYLSUfrbo5Tuzh4hd+2E8NPPX02mZtn1VuREQToYe/ZdlJy+J3uCpfaiGF05e7B8W0iXbQHmg==
 
 resolve@^1.3.2:
-  version "1.12.0"
-  resolved "https://registry.yarnpkg.com/resolve/-/resolve-1.12.0.tgz#3fc644a35c84a48554609ff26ec52b66fa577df6"
-  integrity sha512-B/dOmuoAik5bKcD6s6nXDCjzUKnaDvdkRyAk6rsmsKLipWj4797iothd7jmmUhWTfinVMU+wc56rYKsit2Qy4w==
+  version "1.15.1"
+  resolved "https://registry.yarnpkg.com/resolve/-/resolve-1.15.1.tgz#27bdcdeffeaf2d6244b95bb0f9f4b4653451f3e8"
+  integrity sha512-84oo6ZTtoTUpjgNEr5SJyzQhzL72gaRodsSfyxC/AXRvwu0Yse9H8eF9IpGo7b8YetZhlI6v7ZQ6bKBFV/6S7w==
   dependencies:
     path-parse "^1.0.6"
 
-ripemd160@^2.0.2:
-  version "2.0.2"
-  resolved "https://registry.yarnpkg.com/ripemd160/-/ripemd160-2.0.2.tgz#a1c1a6f624751577ba5d07914cbc92850585890c"
-  integrity sha512-ii4iagi25WusVoiC4B4lq7pbXfAp3D9v5CwfkY33vffw2+pkDjY1D8GaN7spsxvCSx8dkPqOZCEZyfxcmJG2IA==
-  dependencies:
-    hash-base "^3.0.0"
-    inherits "^2.0.1"
-
 rlp@^2.0.0, rlp@^2.1.0, rlp@^2.2.2, rlp@^2.2.3:
   version "2.2.4"
   resolved "https://registry.yarnpkg.com/rlp/-/rlp-2.2.4.tgz#d6b0e1659e9285fc509a5d169a9bd06f704951c1"
@@ -2208,36 +1530,6 @@ set-blocking@^2.0.0, set-blocking@~2.0.0:
   resolved "https://registry.yarnpkg.com/set-blocking/-/set-blocking-2.0.0.tgz#045f9782d011ae9a6803ddd382b24392b3d890f7"
   integrity sha1-BF+XgtARrppoA93TgrJDkrPYkPc=
 
-set-getter@^0.1.0:
-  version "0.1.0"
-  resolved "https://registry.yarnpkg.com/set-getter/-/set-getter-0.1.0.tgz#d769c182c9d5a51f409145f2fba82e5e86e80376"
-  integrity sha1-12nBgsnVpR9AkUXy+6guXoboA3Y=
-  dependencies:
-    to-object-path "^0.3.0"
-
-set-value@^3.0.0:
-  version "3.0.1"
-  resolved "https://registry.yarnpkg.com/set-value/-/set-value-3.0.1.tgz#52c82af7653ba69eb1db92e81f5cdb32739b9e95"
-  integrity sha512-w6n3GUPYAWQj4ZyHWzD7K2FnFXHx9OTwJYbWg+6nXjG8sCLfs9DGv+KlqglKIIJx+ks7MlFuwFW2RBPb+8V+xg==
-  dependencies:
-    is-plain-object "^2.0.4"
-
-shallow-clone@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/shallow-clone/-/shallow-clone-1.0.0.tgz#4480cd06e882ef68b2ad88a3ea54832e2c48b571"
-  integrity sha512-oeXreoKR/SyNJtRJMAKPDSvd28OqEwG4eR/xc856cRGBII7gX9lvAqDxusPm0846z/w/hWYjI1NpKwJ00NHzRA==
-  dependencies:
-    is-extendable "^0.1.1"
-    kind-of "^5.0.0"
-    mixin-object "^2.0.1"
-
-shallow-clone@^3.0.0:
-  version "3.0.1"
-  resolved "https://registry.yarnpkg.com/shallow-clone/-/shallow-clone-3.0.1.tgz#8f2981ad92531f55035b01fb230769a40e02efa3"
-  integrity sha512-/6KqX+GVUdqPuPPd2LxDDxzX6CAbjJehAAOKlNpqqUpAqPM6HeL8f+o3a+JsyGjn2lv0WY8UsTgUJjU9Ok55NA==
-  dependencies:
-    kind-of "^6.0.2"
-
 signal-exit@^3.0.0:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/signal-exit/-/signal-exit-3.0.2.tgz#b5fdc08f1287ea1178628e415e25132b73646c6d"
@@ -2299,14 +1591,6 @@ sshpk@^1.7.0:
     safer-buffer "^2.0.2"
     tweetnacl "~0.14.0"
 
-static-extend@^0.1.2:
-  version "0.1.2"
-  resolved "https://registry.yarnpkg.com/static-extend/-/static-extend-0.1.2.tgz#60809c39cbff55337226fd5e0b520f341f1fb5c6"
-  integrity sha1-YICcOcv/VTNyJv1eC1IPNB8ftcY=
-  dependencies:
-    define-property "^0.2.5"
-    object-copy "^0.1.0"
-
 stealthy-require@^1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/stealthy-require/-/stealthy-require-1.1.1.tgz#35b09875b4ff49f26a777e509b3090a3226bf24b"
@@ -2328,7 +1612,7 @@ string-width@^1.0.1:
     is-fullwidth-code-point "^1.0.0"
     strip-ansi "^3.0.0"
 
-"string-width@^1.0.2 || 2", string-width@^2.0.0, string-width@^2.1.1:
+"string-width@^1.0.2 || 2":
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/string-width/-/string-width-2.1.1.tgz#ab93f27a8dc13d28cac815c462143a6d9012ae9e"
   integrity sha512-nOqH59deCq9SRHlxq1Aw85Jnt4w6KvLKqWVik6oA9ZklXLNIOlqg4F2yrT1MVaTjAqvVwdfeZ7w7aCvJD7ugkw==
@@ -2345,18 +1629,18 @@ string-width@^3.0.0, string-width@^3.1.0:
     is-fullwidth-code-point "^2.0.0"
     strip-ansi "^5.1.0"
 
-string.prototype.trimleft@^2.1.0:
-  version "2.1.0"
-  resolved "https://registry.yarnpkg.com/string.prototype.trimleft/-/string.prototype.trimleft-2.1.0.tgz#6cc47f0d7eb8d62b0f3701611715a3954591d634"
-  integrity sha512-FJ6b7EgdKxxbDxc79cOlok6Afd++TTs5szo+zJTUyow3ycrRfJVE2pq3vcN53XexvKZu/DJMDfeI/qMiZTrjTw==
+string.prototype.trimleft@^2.1.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/string.prototype.trimleft/-/string.prototype.trimleft-2.1.1.tgz#9bdb8ac6abd6d602b17a4ed321870d2f8dcefc74"
+  integrity sha512-iu2AGd3PuP5Rp7x2kEZCrB2Nf41ehzh+goo8TV7z8/XDBbsvc6HQIlUl9RjkZ4oyrW1XM5UwlGl1oVEaDjg6Ag==
   dependencies:
     define-properties "^1.1.3"
     function-bind "^1.1.1"
 
-string.prototype.trimright@^2.1.0:
-  version "2.1.0"
-  resolved "https://registry.yarnpkg.com/string.prototype.trimright/-/string.prototype.trimright-2.1.0.tgz#669d164be9df9b6f7559fa8e89945b168a5a6c58"
-  integrity sha512-fXZTSV55dNBwv16uw+hh5jkghxSnc5oHq+5K/gXgizHwAvMetdAJlHqqoFC1FSDVPYWLkAKl2cxpUT41sV7nSg==
+string.prototype.trimright@^2.1.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/string.prototype.trimright/-/string.prototype.trimright-2.1.1.tgz#440314b15996c866ce8a0341894d45186200c5d9"
+  integrity sha512-qFvWL3/+QIgZXVmJBfpHmxLB7xsUXz6HsUmP8+5dRaC3Q7oKUv9Vo6aMCRZC1smrtyECFsIT30PqBJ1gTjAs+g==
   dependencies:
     define-properties "^1.1.3"
     function-bind "^1.1.1"
@@ -2396,21 +1680,11 @@ strip-ansi@^5.0.0, strip-ansi@^5.1.0, strip-ansi@^5.2.0:
   dependencies:
     ansi-regex "^4.1.0"
 
-strip-color@^0.1.0:
-  version "0.1.0"
-  resolved "https://registry.yarnpkg.com/strip-color/-/strip-color-0.1.0.tgz#106f65d3d3e6a2d9401cac0eb0ce8b8a702b4f7b"
-  integrity sha1-EG9l09PmotlAHKwOsM6LinArT3s=
-
 strip-json-comments@2.0.1, strip-json-comments@~2.0.1:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/strip-json-comments/-/strip-json-comments-2.0.1.tgz#3c531942e908c2697c0ec344858c286c7ca0a60a"
   integrity sha1-PFMZQukIwml8DsNEhYwobHygpgo=
 
-success-symbol@^0.1.0:
-  version "0.1.0"
-  resolved "https://registry.yarnpkg.com/success-symbol/-/success-symbol-0.1.0.tgz#24022e486f3bf1cdca094283b769c472d3b72897"
-  integrity sha1-JAIuSG878c3KCUKDt2nEctO3KJc=
-
 supports-color@6.0.0:
   version "6.0.0"
   resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-6.0.0.tgz#76cfe742cf1f41bb9b1c29ad03068c05b4c0e40a"
@@ -2446,39 +1720,11 @@ tar-stream@^2.0.0:
     inherits "^2.0.3"
     readable-stream "^3.1.1"
 
-terminal-paginator@^2.0.2:
-  version "2.0.2"
-  resolved "https://registry.yarnpkg.com/terminal-paginator/-/terminal-paginator-2.0.2.tgz#967e66056f28fe8f55ba7c1eebfb7c3ef371c1d3"
-  integrity sha512-IZMT5ECF9p4s+sNCV8uvZSW9E1+9zy9Ji9xz2oee8Jfo7hUFpauyjxkhfRcIH6Lu3Wdepv5D1kVRc8Hx74/LfQ==
-  dependencies:
-    debug "^2.6.6"
-    extend-shallow "^2.0.1"
-    log-utils "^0.2.1"
-
 "through@>=2.2.7 <3":
   version "2.3.8"
   resolved "https://registry.yarnpkg.com/through/-/through-2.3.8.tgz#0dd4c9ffaabc357960b1b724115d7e0e86a2e1f5"
   integrity sha1-DdTJ/6q8NXlgsbckEV1+Doai4fU=
 
-time-stamp@^1.0.1:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/time-stamp/-/time-stamp-1.1.0.tgz#764a5a11af50561921b133f3b44e618687e0f5c3"
-  integrity sha1-dkpaEa9QVhkhsTPztE5hhofg9cM=
-
-to-object-path@^0.3.0:
-  version "0.3.0"
-  resolved "https://registry.yarnpkg.com/to-object-path/-/to-object-path-0.3.0.tgz#297588b7b0e7e0ac08e04e672f85c1f4999e17af"
-  integrity sha1-KXWIt7Dn4KwI4E5nL4XB9JmeF68=
-  dependencies:
-    kind-of "^3.0.2"
-
-toggle-array@^1.0.1:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/toggle-array/-/toggle-array-1.0.1.tgz#cbf5840792bd5097f33117ae824c932affe87d58"
-  integrity sha1-y/WEB5K9UJfzMReugkyTKv/ofVg=
-  dependencies:
-    isobject "^3.0.0"
-
 tough-cookie@^2.3.3:
   version "2.5.0"
   resolved "https://registry.yarnpkg.com/tough-cookie/-/tough-cookie-2.5.0.tgz#cd9fb2a0aa1d5a12b473bd9fb96fa3dcff65ade2"
@@ -2496,15 +1742,15 @@ tough-cookie@~2.4.3:
     punycode "^1.4.1"
 
 ts-node@^8.5.2:
-  version "8.5.2"
-  resolved "https://registry.yarnpkg.com/ts-node/-/ts-node-8.5.2.tgz#434f6c893bafe501a30b32ac94ee36809ba2adce"
-  integrity sha512-W1DK/a6BGoV/D4x/SXXm6TSQx6q3blECUzd5TN+j56YEMX3yPVMpHsICLedUw3DvGF3aTQ8hfdR9AKMaHjIi+A==
+  version "8.6.2"
+  resolved "https://registry.yarnpkg.com/ts-node/-/ts-node-8.6.2.tgz#7419a01391a818fbafa6f826a33c1a13e9464e35"
+  integrity sha512-4mZEbofxGqLL2RImpe3zMJukvEvcO1XP8bj8ozBPySdCUXEcU5cIRwR0aM3R+VoZq7iXc8N86NC0FspGRqP4gg==
   dependencies:
     arg "^4.1.0"
     diff "^4.0.1"
     make-error "^1.1.1"
     source-map-support "^0.5.6"
-    yn "^3.0.0"
+    yn "3.1.1"
 
 tslib@^1.8.0, tslib@^1.8.1:
   version "1.10.0"
@@ -2574,9 +1820,9 @@ type-detect@^4.0.0, type-detect@^4.0.5:
   integrity sha512-0fr/mIH1dlO+x7TlcMy+bIDqKPsw/70tVyeHW787goQjhmqaZe10uwLujubK9q9Lg6Fiho1KUKDYz0Z7k7g5/g==
 
 typescript@^3.7.2:
-  version "3.7.2"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.7.2.tgz#27e489b95fa5909445e9fef5ee48d81697ad18fb"
-  integrity sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==
+  version "3.7.5"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.7.5.tgz#0692e21f65fd4108b9330238aac11dd2e177a1ae"
+  integrity sha512-/P5lkRXkWHNAbcJIiHPfRoKqyd7bsyCma1hZNUGfn20qm64T6ZBlrzprymeu918H+mB/0rIg2gGK/BXkhhYgBw==
 
 unorm@^1.4.1:
   version "1.6.0"
@@ -2596,9 +1842,9 @@ util-deprecate@^1.0.1, util-deprecate@~1.0.1:
   integrity sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8=
 
 uuid@^3.2.1, uuid@^3.3.2:
-  version "3.3.3"
-  resolved "https://registry.yarnpkg.com/uuid/-/uuid-3.3.3.tgz#4568f0216e78760ee1dbf3a4d2cf53e224112866"
-  integrity sha512-pW0No1RGHgzlpHJO1nsVrHKpOEIxkGg1xB+v0ZmdNH5OAeAwzAVrCnI2/6Mtx+Uys6iaylxa+D3g4j63IKKjSQ==
+  version "3.4.0"
+  resolved "https://registry.yarnpkg.com/uuid/-/uuid-3.4.0.tgz#b23e4358afa8a202fe7a100af1f5f883f02007ee"
+  integrity sha512-HjSDRw6gZE5JMggctHBcjVak08+KEVhSIiDzFnT9S9aegmp85S/bReBVTb4QTFaRNptJ9kuYaNhnbNEOkbKb/A==
 
 verror@1.10.0:
   version "1.10.0"
@@ -2609,11 +1855,6 @@ verror@1.10.0:
     core-util-is "1.0.2"
     extsprintf "^1.2.0"
 
-warning-symbol@^0.1.0:
-  version "0.1.0"
-  resolved "https://registry.yarnpkg.com/warning-symbol/-/warning-symbol-0.1.0.tgz#bb31dd11b7a0f9d67ab2ed95f457b65825bbad21"
-  integrity sha1-uzHdEbeg+dZ6su2V9Fe2WCW7rSE=
-
 which-module@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/which-module/-/which-module-2.0.0.tgz#d9ef07dce77b9902b8a3a8fa4b31c3e3f7e6e87a"
@@ -2638,14 +1879,6 @@ wide-align@1.1.3, wide-align@^1.1.0:
   dependencies:
     string-width "^1.0.2 || 2"
 
-window-size@^1.1.0:
-  version "1.1.1"
-  resolved "https://registry.yarnpkg.com/window-size/-/window-size-1.1.1.tgz#9858586580ada78ab26ecd6978a6e03115c1af20"
-  integrity sha512-5D/9vujkmVQ7pSmc0SCBmHXbkv6eaHwXEx65MywhmUMsI8sGqJ972APq1lotfcwMKPFLuCFfL8xGHLIp7jaBmA==
-  dependencies:
-    define-property "^1.0.0"
-    is-number "^3.0.0"
-
 wrap-ansi@^5.1.0:
   version "5.1.0"
   resolved "https://registry.yarnpkg.com/wrap-ansi/-/wrap-ansi-5.1.0.tgz#1fd1f67235d5b6d0fee781056001bfb694c03b09"
@@ -2682,7 +1915,7 @@ yargs-unparser@1.6.0:
     lodash "^4.17.15"
     yargs "^13.3.0"
 
-yargs@13.3.0, yargs@^13.2.2, yargs@^13.3.0:
+yargs@13.3.0, yargs@^13.3.0:
   version "13.3.0"
   resolved "https://registry.yarnpkg.com/yargs/-/yargs-13.3.0.tgz#4c657a55e07e5f2cf947f8a366567c04a0dedc83"
   integrity sha512-2eehun/8ALW8TLoIl7MVaRUrg+yCnenu8B4kBlRxj3GJGDKU1Og7sMXPNm1BYyM1DOJmTZ4YeN/Nwxv+8XJsUA==
@@ -2698,7 +1931,7 @@ yargs@13.3.0, yargs@^13.2.2, yargs@^13.3.0:
     y18n "^4.0.0"
     yargs-parser "^13.1.1"
 
-yn@^3.0.0:
+yn@3.1.1:
   version "3.1.1"
   resolved "https://registry.yarnpkg.com/yn/-/yn-3.1.1.tgz#1e87401a09d767c1d5eab26a6e4c185182d2eb50"
   integrity sha512-Ux4ygGWsu2c7isFWe8Yu1YluJmqVhxqK2cLXNQA5AcC3QfbGNpM7fu0Y8b/z16pXLnFxZYvWhd3fhBY9DLmC6Q==
diff --git a/types/Cargo.toml b/types/Cargo.toml
index 9f04601561..41c36d63de 100644
--- a/types/Cargo.toml
+++ b/types/Cargo.toml
@@ -9,6 +9,7 @@ codechain-crypto = { git = "https://github.com/CodeChain-io/rust-codechain-crypt
 codechain-json = { path = "../json" }
 codechain-key = { path = "../key" }
 primitives = { git = "https://github.com/CodeChain-io/rust-codechain-primitives.git", version = "0.4" }
+rand = "0.6.1"
 rlp = { git = "https://github.com/CodeChain-io/rlp.git", version = "0.4" }
 rlp_derive = { git = "https://github.com/CodeChain-io/rlp.git", version = "0.2" }
 serde = "1.0"
diff --git a/types/src/header.rs b/types/src/header.rs
index 35e2dbda86..da0daa9f82 100644
--- a/types/src/header.rs
+++ b/types/src/header.rs
@@ -1,4 +1,4 @@
-// Copyright 2018-2019 Kodebox, Inc.
+// Copyright 2018-2020 Kodebox, Inc.
 // This file is part of CodeChain.
 //
 // This program is free software: you can redistribute it and/or modify
@@ -32,6 +32,7 @@ pub enum Seal {
 }
 
 /// A block header.
+/// Note : you must modify /core/src/views/header.rs too when you modify this.
 #[derive(Debug, Clone, PartialEq)]
 pub struct Header {
     /// Parent hash.
@@ -50,6 +51,8 @@ pub struct Header {
     transactions_root: H256,
     /// State root.
     state_root: H256,
+    /// Next validator set hash.
+    next_validator_set_hash: H256,
 
     /// Block score.
     score: U256,
@@ -74,6 +77,7 @@ impl Default for Header {
 
             transactions_root: BLAKE_NULL_RLP,
             state_root: BLAKE_NULL_RLP,
+            next_validator_set_hash: BLAKE_NULL_RLP,
 
             score: U256::default(),
             seal: vec![],
@@ -83,7 +87,7 @@ impl Default for Header {
     }
 }
 
-const SIZE_WITHOUT_SEAL: usize = 8;
+const SIZE_WITHOUT_SEAL: usize = 9;
 
 impl Header {
     /// Create a new, default-valued, header.
@@ -128,6 +132,12 @@ impl Header {
         &self.transactions_root
     }
 
+    /// Get the validator set root field of the header.
+    pub fn next_validator_set_hash(&self) -> &H256 {
+        &self.next_validator_set_hash
+    }
+
+
     /// Get whether the block has transactions.
     pub fn is_empty(&self) -> bool {
         self.transactions_root() == &BLAKE_NULL_RLP
@@ -190,6 +200,11 @@ impl Header {
         self.transactions_root = a;
         self.note_dirty()
     }
+    /// Set the validator set root field of the header.
+    pub fn set_next_validator_set_hash(&mut self, a: H256) {
+        self.next_validator_set_hash = a;
+        self.note_dirty()
+    }
     /// Set the score field of the header.
     pub fn set_score(&mut self, a: U256) {
         self.score = a;
@@ -240,6 +255,7 @@ impl Header {
         s.append(&self.author);
         s.append(&self.state_root);
         s.append(&self.transactions_root);
+        s.append(&self.next_validator_set_hash);
         s.append(&self.score);
         s.append(&self.number);
         s.append(&self.timestamp);
@@ -288,10 +304,11 @@ impl Decodable for Header {
             author: r.val_at(1)?,
             state_root: r.val_at(2)?,
             transactions_root: r.val_at(3)?,
-            score: r.val_at(4)?,
-            number: r.val_at(5)?,
-            timestamp: cmp::min(r.val_at::<U256>(6)?, u64::max_value().into()).as_u64(),
-            extra_data: r.val_at(7)?,
+            next_validator_set_hash: r.val_at(4)?,
+            score: r.val_at(5)?,
+            number: r.val_at(6)?,
+            timestamp: cmp::min(r.val_at::<U256>(7)?, u64::max_value().into()).as_u64(),
+            extra_data: r.val_at(8)?,
             seal: vec![],
             hash: RefCell::new(Some(blake256(r.as_raw()))),
             bare_hash: RefCell::new(None),
diff --git a/types/src/lib.rs b/types/src/lib.rs
index 82f736cd21..333d391000 100644
--- a/types/src/lib.rs
+++ b/types/src/lib.rs
@@ -1,4 +1,4 @@
-// Copyright 2018-2019 Kodebox, Inc.
+// Copyright 2018-2020 Kodebox, Inc.
 // This file is part of CodeChain.
 //
 // This program is free software: you can redistribute it and/or modify
@@ -28,6 +28,7 @@ mod block_hash;
 mod common_params;
 mod tracker;
 mod tx_hash;
+mod validator_set;
 
 pub mod errors;
 pub mod header;
@@ -42,3 +43,4 @@ pub use common_params::CommonParams;
 pub use header::Header;
 pub use tracker::Tracker;
 pub use tx_hash::TxHash;
+pub use validator_set::CompactValidatorSet;
diff --git a/types/src/validator_set.rs b/types/src/validator_set.rs
new file mode 100644
index 0000000000..2e7c841881
--- /dev/null
+++ b/types/src/validator_set.rs
@@ -0,0 +1,85 @@
+// Copyright 2020 Kodebox, Inc.
+// This file is part of CodeChain.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as
+// published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+use ccrypto::blake256;
+use ckey::Public;
+use primitives::H256;
+use rlp::{Decodable, DecoderError, Encodable, Rlp, RlpStream};
+
+// It will be hashed in the header.
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct CompactValidatorSet(pub Vec<(Public, u64)>);
+
+impl CompactValidatorSet {
+    pub fn hash(&self) -> H256 {
+        blake256(self.rlp_bytes())
+    }
+}
+
+impl Encodable for CompactValidatorSet {
+    fn rlp_append(&self, s: &mut RlpStream) {
+        s.begin_list(self.0.len() * 2);
+        for (k, d) in self.0.iter() {
+            s.append(k);
+            s.append(d);
+        }
+    }
+}
+
+impl Decodable for CompactValidatorSet {
+    fn decode(rlp: &Rlp<'_>) -> Result<Self, DecoderError> {
+        let item_count = rlp.item_count()?;
+        if item_count % 2 == 1 {
+            return Err(DecoderError::RlpInvalidLength {
+                expected: item_count + 1,
+                got: item_count,
+            })
+        }
+        let mut vec = Vec::with_capacity(item_count / 2);
+        // TODO: Optimzie the below code
+        for i in 0..(item_count / 2) {
+            vec.push((rlp.val_at(i * 2)?, rlp.val_at(i * 2 + 1)?));
+        }
+        Ok(Self(vec))
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use ccrypto::blake512;
+    use rand::{rngs::StdRng, Rng};
+    use rlp::rlp_encode_and_decode_test;
+
+    #[test]
+    fn encode_and_decode() {
+        let iteration = 100;
+
+        let seed = [0 as u8; 32];
+        let mut rng: StdRng = rand::SeedableRng::from_seed(seed);
+
+        for _ in 0..iteration {
+            let mut vset = CompactValidatorSet {
+                0: Vec::new(),
+            };
+            let n = rng.gen::<u8>();
+
+            for _ in 0..n {
+                vset.0.push((blake512(format!("{}", rng.gen::<u64>())), rng.gen::<u64>()));
+            }
+            rlp_encode_and_decode_test!(vset);
+        }
+    }
+}