From 7edaae80ed0fbde403181b2dfee19d767a57add1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ga=C3=ABtan=20Renaudeau?= <gaetan.renaudeau@ledger.fr>
Date: Tue, 6 Feb 2018 19:52:28 +0100
Subject: [PATCH] add create-dapp and web3-subprovider

---
 packages/create-dapp/README.md                |   53 +
 packages/create-dapp/package.json             |   18 +
 packages/create-dapp/scripts/create-dapp      |   19 +
 packages/create-dapp/template/.flowconfig     |   11 +
 packages/create-dapp/template/.gitignore      |   23 +
 packages/create-dapp/template/README.md       |   40 +
 packages/create-dapp/template/package.json    |   19 +
 .../create-dapp/template/public/favicon.ico   |  Bin 0 -> 3870 bytes
 .../create-dapp/template/public/index.html    |   40 +
 .../create-dapp/template/public/manifest.json |   15 +
 packages/create-dapp/template/src/App.css     |   13 +
 packages/create-dapp/template/src/App.js      |   46 +
 packages/create-dapp/template/src/DApp.css    |    7 +
 packages/create-dapp/template/src/DApp.js     |  141 +++
 .../create-dapp/template/src/Onboarding.css   |   29 +
 .../create-dapp/template/src/Onboarding.js    |  125 ++
 .../src/dapp/contracts/Migrations.sol         |   23 +
 .../src/dapp/contracts/SimpleStorage.sol      |   16 +
 .../dapp/migrations/1_initial_migration.js    |    5 +
 .../src/dapp/migrations/2_deploy_contracts.js |    5 +
 .../src/dapp/test/TestSimpleStorage.sol       |   19 +
 .../create-dapp/template/src/dapp/truffle.js  |    9 +
 packages/create-dapp/template/src/index.css   |    9 +
 packages/create-dapp/template/src/index.js    |    6 +
 packages/create-dapp/template/src/wallets.js  |   38 +
 packages/web3-subprovider/.flowconfig         |   12 +
 packages/web3-subprovider/README.md           |    9 +
 packages/web3-subprovider/package.json        |   48 +
 packages/web3-subprovider/src/index.js        |  177 +++
 yarn.lock                                     | 1101 +++++++++++------
 30 files changed, 1727 insertions(+), 349 deletions(-)
 create mode 100644 packages/create-dapp/README.md
 create mode 100644 packages/create-dapp/package.json
 create mode 100755 packages/create-dapp/scripts/create-dapp
 create mode 100644 packages/create-dapp/template/.flowconfig
 create mode 100644 packages/create-dapp/template/.gitignore
 create mode 100644 packages/create-dapp/template/README.md
 create mode 100644 packages/create-dapp/template/package.json
 create mode 100644 packages/create-dapp/template/public/favicon.ico
 create mode 100644 packages/create-dapp/template/public/index.html
 create mode 100644 packages/create-dapp/template/public/manifest.json
 create mode 100644 packages/create-dapp/template/src/App.css
 create mode 100644 packages/create-dapp/template/src/App.js
 create mode 100644 packages/create-dapp/template/src/DApp.css
 create mode 100644 packages/create-dapp/template/src/DApp.js
 create mode 100644 packages/create-dapp/template/src/Onboarding.css
 create mode 100644 packages/create-dapp/template/src/Onboarding.js
 create mode 100644 packages/create-dapp/template/src/dapp/contracts/Migrations.sol
 create mode 100644 packages/create-dapp/template/src/dapp/contracts/SimpleStorage.sol
 create mode 100644 packages/create-dapp/template/src/dapp/migrations/1_initial_migration.js
 create mode 100644 packages/create-dapp/template/src/dapp/migrations/2_deploy_contracts.js
 create mode 100644 packages/create-dapp/template/src/dapp/test/TestSimpleStorage.sol
 create mode 100644 packages/create-dapp/template/src/dapp/truffle.js
 create mode 100644 packages/create-dapp/template/src/index.css
 create mode 100644 packages/create-dapp/template/src/index.js
 create mode 100644 packages/create-dapp/template/src/wallets.js
 create mode 100644 packages/web3-subprovider/.flowconfig
 create mode 100644 packages/web3-subprovider/README.md
 create mode 100644 packages/web3-subprovider/package.json
 create mode 100644 packages/web3-subprovider/src/index.js

diff --git a/packages/create-dapp/README.md b/packages/create-dapp/README.md
new file mode 100644
index 000000000..14032b01e
--- /dev/null
+++ b/packages/create-dapp/README.md
@@ -0,0 +1,53 @@
+# Ledger DApp Ethereum starter kit
+
+Welcome to the DApp starter kit that helps you writing web app backed by Ethereum start contract and interacting with the Ledger device.
+
+**This bootstrap a `create-react-app` project with a simple Ethereum contract:**
+
+```
+yarn create dapp new-project-name
+```
+
+OR
+
+```
+npm i -g create-dapp
+create-dapp new-project-name
+```
+
+![](https://user-images.githubusercontent.com/211411/35970466-b4985312-0cca-11e8-9baf-33e60ec9ac70.gif)
+
+## Pre-requisite documentation to read
+
+* React: https://reactjs.org
+* Solidity: https://solidity.readthedocs.io
+* web3.js: https://github.com/ethereum/web3.js
+* truffle-contract: https://github.com/trufflesuite/truffle-contract
+
+## Pre-requisite tools to install
+
+```
+npm install -g truffle ganache-cli
+```
+
+## Develop
+
+Run a development Ethereum network:
+
+```
+ganache-cli --networkId 1337
+```
+
+Run the truffle tool, to generate and compile the contracts. **NB: the truffle project lives under src/dapp**
+
+```
+cd src/dapp
+truffle compile
+truffle deploy --network development
+```
+
+Run the web app:
+
+```
+npm start
+```
diff --git a/packages/create-dapp/package.json b/packages/create-dapp/package.json
new file mode 100644
index 000000000..7f97ee6fc
--- /dev/null
+++ b/packages/create-dapp/package.json
@@ -0,0 +1,18 @@
+{
+  "name": "create-dapp",
+  "version": "0.3.0",
+  "description": "Create React Ethereum apps, ready to use with Ledger and MetaMask",
+  "keywords": [
+    "dapp",
+    "ethereum",
+    "web3",
+    "truffle",
+    "ledger",
+    "react",
+    "ganache"
+  ],
+  "homepage": "https://github.com/ledgerhq/ledgerjs",
+  "bugs": "https://github.com/ledgerhq/ledgerjs/issues",
+  "license": "Apache-2.0",
+  "bin": "scripts/create-dapp"
+}
diff --git a/packages/create-dapp/scripts/create-dapp b/packages/create-dapp/scripts/create-dapp
new file mode 100755
index 000000000..bce3dc6d9
--- /dev/null
+++ b/packages/create-dapp/scripts/create-dapp
@@ -0,0 +1,19 @@
+#!/bin/bash
+
+set -e
+
+if [ -z "$1" ]; then
+  echo "Usage: create-dapp <appname>"
+  exit 1
+fi
+APP_NAME=$1
+
+mkdir $APP_NAME
+
+TMP_FOLDER=`mktemp -d 2>/dev/null || mktemp -d -t 'mytmpdir'`
+cd $TMP_FOLDER
+npm v create-dapp dist.tarball | xargs curl -s | tar -xz
+cd - 1> /dev/null
+cd $APP_NAME
+cp -R $TMP_FOLDER/package/template/. .
+echo "Project $APP_NAME has been successfully bootstrapped."
diff --git a/packages/create-dapp/template/.flowconfig b/packages/create-dapp/template/.flowconfig
new file mode 100644
index 000000000..1fed44533
--- /dev/null
+++ b/packages/create-dapp/template/.flowconfig
@@ -0,0 +1,11 @@
+[ignore]
+
+[include]
+
+[libs]
+
+[lints]
+
+[options]
+
+[strict]
diff --git a/packages/create-dapp/template/.gitignore b/packages/create-dapp/template/.gitignore
new file mode 100644
index 000000000..bd9fa2185
--- /dev/null
+++ b/packages/create-dapp/template/.gitignore
@@ -0,0 +1,23 @@
+# See https://help.github.com/ignore-files/ for more about ignoring files.
+
+src/dapp/build/
+
+# dependencies
+/node_modules
+
+# testing
+/coverage
+
+# production
+/build
+
+# misc
+.DS_Store
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
diff --git a/packages/create-dapp/template/README.md b/packages/create-dapp/template/README.md
new file mode 100644
index 000000000..19040dd8b
--- /dev/null
+++ b/packages/create-dapp/template/README.md
@@ -0,0 +1,40 @@
+# Ledger DApp Ethereum starter kit
+
+Welcome to the DApp starter kit that helps you writing web app backed by Ethereum start contract and interacting with the Ledger device.
+
+This is a normal `create-react-app` project bootstrapped with a `truffle` project under `src/dapp`.
+
+## Pre-requisite documentation to read
+
+* React: https://reactjs.org
+* Solidity: https://solidity.readthedocs.io
+* web3.js: https://github.com/ethereum/web3.js
+* truffle-contract: https://github.com/trufflesuite/truffle-contract
+
+## Pre-requisite tools to install
+
+```
+npm install -g truffle ganache-cli
+```
+
+## Develop
+
+Run a development Ethereum network:
+
+```
+ganache-cli --networkId 1337
+```
+
+Run the truffle tool, to generate and compile the contracts. **NB: the truffle project lives under src/dapp**
+
+```
+cd src/dapp
+truffle compile
+truffle deploy --network development
+```
+
+Run the web app:
+
+```
+npm start
+```
diff --git a/packages/create-dapp/template/package.json b/packages/create-dapp/template/package.json
new file mode 100644
index 000000000..282cb949a
--- /dev/null
+++ b/packages/create-dapp/template/package.json
@@ -0,0 +1,19 @@
+{
+  "name": "dapp",
+  "version": "0.0.0",
+  "private": true,
+  "dependencies": {
+    "react": "^16.2.0",
+    "react-dom": "^16.2.0",
+    "react-scripts": "1.1.0",
+    "truffle-contract": "^3.0.3",
+    "@ledgerhq/web3-subprovider": "^2.0.0",
+    "web3": "^1.0.0-beta.29"
+  },
+  "scripts": {
+    "start": "HTTPS=true react-scripts start",
+    "build": "react-scripts build",
+    "test": "react-scripts test --env=jsdom",
+    "eject": "react-scripts eject"
+  }
+}
diff --git a/packages/create-dapp/template/public/favicon.ico b/packages/create-dapp/template/public/favicon.ico
new file mode 100644
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diff --git a/packages/create-dapp/template/public/index.html b/packages/create-dapp/template/public/index.html
new file mode 100644
index 000000000..136e0b6af
--- /dev/null
+++ b/packages/create-dapp/template/public/index.html
@@ -0,0 +1,40 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <meta name="theme-color" content="#000000">
+    <!--
+      manifest.json provides metadata used when your web app is added to the
+      homescreen on Android. See https://developers.google.com/web/fundamentals/engage-and-retain/web-app-manifest/
+    -->
+    <link rel="manifest" href="%PUBLIC_URL%/manifest.json">
+    <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
+    <!--
+      Notice the use of %PUBLIC_URL% in the tags above.
+      It will be replaced with the URL of the `public` folder during the build.
+      Only files inside the `public` folder can be referenced from the HTML.
+
+      Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
+      work correctly both with client-side routing and a non-root public URL.
+      Learn how to configure a non-root public URL by running `npm run build`.
+    -->
+    <title>React DApp</title>
+  </head>
+  <body>
+    <noscript>
+      You need to enable JavaScript to run this app.
+    </noscript>
+    <div id="root"></div>
+    <!--
+      This HTML file is a template.
+      If you open it directly in the browser, you will see an empty page.
+
+      You can add webfonts, meta tags, or analytics to this file.
+      The build step will place the bundled scripts into the <body> tag.
+
+      To begin the development, run `npm start` or `yarn start`.
+      To create a production bundle, use `npm run build` or `yarn build`.
+    -->
+  </body>
+</html>
diff --git a/packages/create-dapp/template/public/manifest.json b/packages/create-dapp/template/public/manifest.json
new file mode 100644
index 000000000..ff1200fc1
--- /dev/null
+++ b/packages/create-dapp/template/public/manifest.json
@@ -0,0 +1,15 @@
+{
+  "short_name": "React DApp",
+  "name": "Create React DApp Sample",
+  "icons": [
+    {
+      "src": "favicon.ico",
+      "sizes": "64x64 32x32 24x24 16x16",
+      "type": "image/x-icon"
+    }
+  ],
+  "start_url": "./index.html",
+  "display": "standalone",
+  "theme_color": "#000000",
+  "background_color": "#ffffff"
+}
diff --git a/packages/create-dapp/template/src/App.css b/packages/create-dapp/template/src/App.css
new file mode 100644
index 000000000..8894a08e7
--- /dev/null
+++ b/packages/create-dapp/template/src/App.css
@@ -0,0 +1,13 @@
+.App {
+}
+.App header {
+  padding: 60px;
+  text-align: center;
+  background-color: #282c34;
+  color: white;
+}
+.App .App-body {
+  padding: 20px;
+  width: 800px;
+  margin: 0 auto;
+}
diff --git a/packages/create-dapp/template/src/App.js b/packages/create-dapp/template/src/App.js
new file mode 100644
index 000000000..da8126ae1
--- /dev/null
+++ b/packages/create-dapp/template/src/App.js
@@ -0,0 +1,46 @@
+// @flow
+import React, { Component } from "react";
+import type Web3 from "web3";
+import DApp from "./DApp";
+import Onboarding from "./Onboarding";
+import availableWallets from "./wallets";
+import "./App.css";
+
+export default class App extends Component<
+  {},
+  { web3: ?Web3, account: ?string }
+> {
+  state = {
+    web3: null,
+    account: null
+  };
+
+  onLogout = () => {
+    this.setState({ web3: null, account: null });
+  };
+
+  onOnboardingDone = (web3: Web3, account: string) => {
+    this.setState({ web3, account });
+  };
+
+  render() {
+    const { account, web3 } = this.state;
+    return (
+      <div className="App">
+        <header>
+          <h1>React DApp Sample</h1>
+        </header>
+        <div className="App-body">
+          {account && web3 ? (
+            <DApp account={account} web3={web3} onLogout={this.onLogout} />
+          ) : (
+            <Onboarding
+              wallets={availableWallets}
+              onDone={this.onOnboardingDone}
+            />
+          )}
+        </div>
+      </div>
+    );
+  }
+}
diff --git a/packages/create-dapp/template/src/DApp.css b/packages/create-dapp/template/src/DApp.css
new file mode 100644
index 000000000..125559c57
--- /dev/null
+++ b/packages/create-dapp/template/src/DApp.css
@@ -0,0 +1,7 @@
+.DApp {
+  font-size: 1.6em;
+}
+.DApp .error {
+  margin: 20px 0;
+  color: #f66;
+}
diff --git a/packages/create-dapp/template/src/DApp.js b/packages/create-dapp/template/src/DApp.js
new file mode 100644
index 000000000..be4712d5f
--- /dev/null
+++ b/packages/create-dapp/template/src/DApp.js
@@ -0,0 +1,141 @@
+// @flow
+import React, { Component } from "react";
+import contract from "truffle-contract";
+import type Web3 from "web3";
+import "./DApp.css";
+
+// our example includes a simple contract that allows to set and restore a value.
+import SimpleStorageContract from "./dapp/build/contracts/SimpleStorage.json";
+
+/**
+ * define our actual DApp that works with a web3 instance on a given account.
+ */
+export default class DApp extends Component<
+  {
+    web3: Web3,
+    account: string,
+    onLogout: () => void,
+    error: ?Error,
+    pending: boolean
+  },
+  *
+> {
+  state = {
+    storageValue: 0,
+    localInputValue: 0,
+    simpleStorage: null,
+    error: null,
+    pending: false
+  };
+
+  valueChangedEvent: *;
+
+  async componentDidMount() {
+    // initialize the contract and retrieve the deployed version
+    const { web3 } = this.props;
+    const simpleStorageContract = contract(SimpleStorageContract);
+    simpleStorageContract.setProvider(web3.currentProvider);
+    const simpleStorage = await simpleStorageContract.deployed();
+
+    // retrieve the value of the contract
+    const result = await simpleStorage.get();
+    const storageValue = result.c[0];
+    this.setState({
+      simpleStorage,
+      storageValue,
+      localInputValue: storageValue
+    });
+
+    // and plug to the ValueChanged event
+    this.valueChangedEvent = simpleStorage.ValueChanged();
+    this.valueChangedEvent.watch((error, result) => {
+      if (error) {
+        this.setState({ error });
+      } else {
+        this.setState({ error: null, storageValue: result.args.value.c[0] });
+      }
+    });
+  }
+
+  componentWillUnmount() {
+    try {
+      this.valueChangedEvent.stopWatching();
+    } catch (e) {
+      // NB MetaMask currently have an error thrown
+      console.error(e);
+    }
+  }
+
+  onChangeInput = (e: *) => {
+    this.setState({ localInputValue: parseInt(e.target.value, 10) });
+  };
+
+  onSetButton = async () => {
+    const { simpleStorage, localInputValue } = this.state;
+    const { account } = this.props;
+    if (!simpleStorage) return;
+    this.setState({ error: null, pending: true });
+    try {
+      // call the set function on the contract with our new value
+      await simpleStorage.set(localInputValue, { from: account });
+      // NB at this stage we don't have the transaction confirmed yet,
+      // but we move on by optimistically setting the new value
+      this.setState({
+        error: null,
+        storageValue: localInputValue,
+        pending: false
+      });
+    } catch (error) {
+      this.setState({ error, pending: false });
+    }
+  };
+
+  render() {
+    const { account, onLogout } = this.props;
+    const {
+      simpleStorage,
+      storageValue,
+      localInputValue,
+      error,
+      pending
+    } = this.state;
+
+    if (!simpleStorage) {
+      return (
+        <div className="App">
+          <div className="loading">Loading...</div>
+        </div>
+      );
+    }
+
+    return (
+      <div className="DApp">
+        <p>
+          Account <code>{account}</code>{" "}
+          <button onClick={onLogout}>Logout</button>
+        </p>
+        <p>
+          The stored value is: <strong>{storageValue}</strong>
+        </p>
+        <label>
+          <input
+            type="number"
+            value={localInputValue}
+            onChange={this.onChangeInput}
+          />
+          <button
+            onClick={this.onSetButton}
+            disabled={pending || localInputValue === storageValue}
+          >
+            SET
+          </button>
+        </label>
+        {error ? (
+          <div className="error">
+            {String((error && error.message) || error)}
+          </div>
+        ) : null}
+      </div>
+    );
+  }
+}
diff --git a/packages/create-dapp/template/src/Onboarding.css b/packages/create-dapp/template/src/Onboarding.css
new file mode 100644
index 000000000..b49d2c000
--- /dev/null
+++ b/packages/create-dapp/template/src/Onboarding.css
@@ -0,0 +1,29 @@
+.Onboarding {
+}
+
+.Onboarding label {
+  display: block;
+  padding: 0.5em 1em;
+}
+.Onboarding input[type="radio"] {
+  margin-right: 1em;
+}
+
+.Onboarding .loading {
+  padding: 20px;
+  opacity: 0.5;
+  font-size: 1.4em;
+}
+
+.Onboarding .error {
+  padding: 20px;
+  font-size: 1.2em;
+  color: #f66;
+}
+
+.Onboarding footer {
+  padding: 20px;
+}
+.Onboarding footer button {
+  font-size: 1.4em;
+}
diff --git a/packages/create-dapp/template/src/Onboarding.js b/packages/create-dapp/template/src/Onboarding.js
new file mode 100644
index 000000000..32e22e9f6
--- /dev/null
+++ b/packages/create-dapp/template/src/Onboarding.js
@@ -0,0 +1,125 @@
+// @flow
+import React, { Component } from "react";
+import type Web3 from "web3";
+import "./Onboarding.css";
+
+type Wallet = { name: string, getWeb3: () => Promise<Web3> };
+
+/**
+ * define Onboarding, a component that will handle
+ * the wallet selection and account address selection logic
+ */
+export default class Onboarding extends Component<
+  {
+    wallets: Array<Wallet>,
+    onDone: (web3: Web3, account: string) => void
+  },
+  {
+    pending: boolean,
+    web3: ?Web3,
+    error: ?Error,
+    accounts: ?Array<string>,
+    selectedAccountIndex: number,
+    selectedWalletIndex: number
+  }
+> {
+  state = {
+    pending: false,
+    web3: null,
+    error: null,
+    accounts: null,
+    selectedWalletIndex: -1,
+    selectedAccountIndex: 0
+  };
+
+  onWalletChange = async (e: *) => {
+    const selectedWalletIndex = parseInt(e.target.value, 10);
+    const wallet = this.props.wallets[selectedWalletIndex];
+    try {
+      this.setState({ selectedWalletIndex, pending: true, accounts: null });
+      const web3 = await wallet.getWeb3();
+      const accounts = await new Promise((resolve, reject) => {
+        web3.eth.getAccounts((error, accounts) => {
+          if (error) reject(error);
+          else resolve(accounts);
+        });
+      });
+      if (accounts.length === 0) throw new Error("no accounts found");
+      this.setState({ web3, accounts, pending: false });
+    } catch (error) {
+      this.setState({ error, pending: false });
+    }
+  };
+
+  onAccountChange = (e: *) => {
+    this.setState({ selectedAccountIndex: parseInt(e.target.value, 10) });
+  };
+
+  onDone = () => {
+    const { web3, accounts, selectedAccountIndex } = this.state;
+    const account = accounts && accounts[selectedAccountIndex];
+    account && this.props.onDone(web3, account);
+  };
+
+  render() {
+    const { wallets } = this.props;
+    const {
+      pending,
+      error,
+      accounts,
+      selectedAccountIndex,
+      selectedWalletIndex
+    } = this.state;
+    return (
+      <div className="Onboarding">
+        <section>
+          <h2>1. select a wallet</h2>
+          <div className="wallets">
+            {wallets.map((wallet, i) => (
+              <label key={i}>
+                <input
+                  type="radio"
+                  name="onboarding-wallet"
+                  value={i}
+                  disabled={pending}
+                  checked={selectedWalletIndex === i}
+                  onChange={this.onWalletChange}
+                />
+                {wallet.name}
+              </label>
+            ))}
+          </div>
+        </section>
+        {accounts ? (
+          <section>
+            <h2>2. select an account</h2>
+            <div className="accounts">
+              {accounts.map((account, i) => (
+                <label key={account}>
+                  <input
+                    type="radio"
+                    name="onboarding-account"
+                    value={i}
+                    disabled={pending}
+                    checked={selectedAccountIndex === i}
+                    onChange={this.onAccountChange}
+                  />
+                  {account}
+                </label>
+              ))}
+            </div>
+            <footer>
+              <button onClick={this.onDone}>Connect</button>
+            </footer>
+          </section>
+        ) : null}
+        {pending ? <div className="loading">Loading...</div> : null}
+        {error ? (
+          <div className="error">
+            {String((error && error.message) || error)}
+          </div>
+        ) : null}
+      </div>
+    );
+  }
+}
diff --git a/packages/create-dapp/template/src/dapp/contracts/Migrations.sol b/packages/create-dapp/template/src/dapp/contracts/Migrations.sol
new file mode 100644
index 000000000..eeed7a4e9
--- /dev/null
+++ b/packages/create-dapp/template/src/dapp/contracts/Migrations.sol
@@ -0,0 +1,23 @@
+pragma solidity ^0.4.2;
+
+contract Migrations {
+  address public owner;
+  uint public last_completed_migration;
+
+  modifier restricted() {
+    if (msg.sender == owner) _;
+  }
+
+  function Migrations() public {
+    owner = msg.sender;
+  }
+
+  function setCompleted(uint completed) public restricted {
+    last_completed_migration = completed;
+  }
+
+  function upgrade(address new_address) public restricted {
+    Migrations upgraded = Migrations(new_address);
+    upgraded.setCompleted(last_completed_migration);
+  }
+}
diff --git a/packages/create-dapp/template/src/dapp/contracts/SimpleStorage.sol b/packages/create-dapp/template/src/dapp/contracts/SimpleStorage.sol
new file mode 100644
index 000000000..af50f8404
--- /dev/null
+++ b/packages/create-dapp/template/src/dapp/contracts/SimpleStorage.sol
@@ -0,0 +1,16 @@
+pragma solidity ^0.4.18;
+
+contract SimpleStorage {
+  uint storedData;
+
+  event ValueChanged(uint value);
+
+  function set(uint x) public {
+    storedData = x;
+    ValueChanged(x);
+  }
+
+  function get() public view returns (uint) {
+    return storedData;
+  }
+}
diff --git a/packages/create-dapp/template/src/dapp/migrations/1_initial_migration.js b/packages/create-dapp/template/src/dapp/migrations/1_initial_migration.js
new file mode 100644
index 000000000..4d5f3f9b0
--- /dev/null
+++ b/packages/create-dapp/template/src/dapp/migrations/1_initial_migration.js
@@ -0,0 +1,5 @@
+var Migrations = artifacts.require("./Migrations.sol");
+
+module.exports = function(deployer) {
+  deployer.deploy(Migrations);
+};
diff --git a/packages/create-dapp/template/src/dapp/migrations/2_deploy_contracts.js b/packages/create-dapp/template/src/dapp/migrations/2_deploy_contracts.js
new file mode 100644
index 000000000..71ffad925
--- /dev/null
+++ b/packages/create-dapp/template/src/dapp/migrations/2_deploy_contracts.js
@@ -0,0 +1,5 @@
+var SimpleStorage = artifacts.require("./SimpleStorage.sol");
+
+module.exports = function(deployer) {
+  deployer.deploy(SimpleStorage);
+};
diff --git a/packages/create-dapp/template/src/dapp/test/TestSimpleStorage.sol b/packages/create-dapp/template/src/dapp/test/TestSimpleStorage.sol
new file mode 100644
index 000000000..c8ee668cb
--- /dev/null
+++ b/packages/create-dapp/template/src/dapp/test/TestSimpleStorage.sol
@@ -0,0 +1,19 @@
+pragma solidity ^0.4.2;
+
+import "truffle/Assert.sol";
+import "truffle/DeployedAddresses.sol";
+import "../contracts/SimpleStorage.sol";
+
+contract TestSimpleStorage {
+
+  function testItStoresAValue() public {
+    SimpleStorage simpleStorage = SimpleStorage(DeployedAddresses.SimpleStorage());
+
+    simpleStorage.set(89);
+
+    uint expected = 89;
+
+    Assert.equal(simpleStorage.get(), expected, "It should store the value 89.");
+  }
+
+}
diff --git a/packages/create-dapp/template/src/dapp/truffle.js b/packages/create-dapp/template/src/dapp/truffle.js
new file mode 100644
index 000000000..b4c661b18
--- /dev/null
+++ b/packages/create-dapp/template/src/dapp/truffle.js
@@ -0,0 +1,9 @@
+module.exports = {
+  networks: {
+    development: {
+      host: "127.0.0.1",
+      port: 8545,
+      network_id: "*" // Match any network id
+    }
+  }
+};
diff --git a/packages/create-dapp/template/src/index.css b/packages/create-dapp/template/src/index.css
new file mode 100644
index 000000000..df48d6670
--- /dev/null
+++ b/packages/create-dapp/template/src/index.css
@@ -0,0 +1,9 @@
+body {
+  margin: 0;
+  padding: 0;
+  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen",
+    "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue",
+    sans-serif;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+}
diff --git a/packages/create-dapp/template/src/index.js b/packages/create-dapp/template/src/index.js
new file mode 100644
index 000000000..9346fe6cc
--- /dev/null
+++ b/packages/create-dapp/template/src/index.js
@@ -0,0 +1,6 @@
+import React from "react";
+import ReactDOM from "react-dom";
+import App from "./App";
+import "./index.css";
+
+ReactDOM.render(<App />, document.getElementById("root"));
diff --git a/packages/create-dapp/template/src/wallets.js b/packages/create-dapp/template/src/wallets.js
new file mode 100644
index 000000000..b11d004cf
--- /dev/null
+++ b/packages/create-dapp/template/src/wallets.js
@@ -0,0 +1,38 @@
+// @flow
+import Web3 from "web3";
+import createLedgerSubprovider from "@ledgerhq/web3-subprovider";
+import ProviderEngine from "web3-provider-engine";
+import RpcSubprovider from "web3-provider-engine/subproviders/rpc";
+
+// we are branching the configuration based on development mode.
+const DEV = process.env.NODE_ENV === "development";
+const rpcUrl = DEV ? "http://127.0.0.1:8545" : "https://mainnet.infura.io";
+const networkId = DEV ? 1337 : 1;
+
+// we define all wallets exposing a way to get a web3 instance. feel free to adapt.
+export default [
+  {
+    name: "Ledger device",
+    // create a web3 with the ledger device
+    getWeb3: async () => {
+      const engine = new ProviderEngine();
+      const ledger = await createLedgerSubprovider({
+        networkId,
+        accountsLength: 5
+      });
+      engine.addProvider(ledger);
+      engine.addProvider(new RpcSubprovider({ rpcUrl }));
+      engine.start();
+      return new Web3(engine);
+    }
+  },
+  {
+    name: "web3 runtime (MetaMask / Mist)",
+    // detect extension like Mist/MetaMask
+    getWeb3: async () => {
+      const web3 = window.web3;
+      if (!web3) throw new Error("no web3 instance found in runtime");
+      return new Web3(web3.currentProvider);
+    }
+  }
+];
diff --git a/packages/web3-subprovider/.flowconfig b/packages/web3-subprovider/.flowconfig
new file mode 100644
index 000000000..0d2614028
--- /dev/null
+++ b/packages/web3-subprovider/.flowconfig
@@ -0,0 +1,12 @@
+[ignore]
+
+[include]
+
+[libs]
+flow-typed
+
+[lints]
+
+[options]
+
+[strict]
diff --git a/packages/web3-subprovider/README.md b/packages/web3-subprovider/README.md
new file mode 100644
index 000000000..de5b20383
--- /dev/null
+++ b/packages/web3-subprovider/README.md
@@ -0,0 +1,9 @@
+<img src="https://user-images.githubusercontent.com/211411/34776833-6f1ef4da-f618-11e7-8b13-f0697901d6a8.png" height="100" />
+
+## @ledgerhq/web3-subprovider
+
+Library for Ledger Hardware Wallets.
+
+[Github](https://github.com/LedgerHQ/ledgerjs/),
+[API Doc](http://ledgerhq.github.io/ledgerjs/),
+[Ledger Devs Slack](https://ledger-dev.slack.com/)
diff --git a/packages/web3-subprovider/package.json b/packages/web3-subprovider/package.json
new file mode 100644
index 000000000..928f5b486
--- /dev/null
+++ b/packages/web3-subprovider/package.json
@@ -0,0 +1,48 @@
+{
+  "name": "@ledgerhq/web3-subprovider",
+  "version": "2.3.0",
+  "description": "Ledger Hardware Wallet Ethereum Web3 subprovider",
+  "keywords": [
+    "Ledger",
+    "LedgerWallet",
+    "Ethereum",
+    "eth",
+    "NanoS",
+    "Blue",
+    "Hardware Wallet",
+    "web3",
+    "subprovider",
+    "provider"
+  ],
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/LedgerHQ/ledgerjs"
+  },
+  "bugs": {
+    "url": "https://github.com/LedgerHQ/ledgerjs/issues"
+  },
+  "homepage": "https://github.com/LedgerHQ/ledgerjs",
+  "publishConfig": {
+    "access": "public"
+  },
+  "main": "lib/index.js",
+  "license": "Apache-2.0",
+  "dependencies": {
+    "@ledgerhq/hw-app-eth": "^2.1.3",
+    "@ledgerhq/hw-transport": "^2.1.3",
+    "@ledgerhq/hw-transport-u2f": "^2.1.3",
+    "ethereumjs-tx": "^1.3.3",
+    "strip-hex-prefix": "^1.0.0",
+    "web3-provider-engine": "^13.6.0"
+  },
+  "devDependencies": {
+    "flow-bin": "^0.64.0",
+    "flow-typed": "^2.3.0"
+  },
+  "scripts": {
+    "flow": "flow",
+    "clean": "rm -rf lib/",
+    "build": "cd ../.. && export PATH=$(yarn bin):$PATH && cd - && babel --source-maps -d lib src && flow-copy-source -v src lib",
+    "watch": "cd ../.. && export PATH=$(yarn bin):$PATH && cd - && babel --watch --source-maps -d lib src & flow-copy-source -w -v src lib"
+  }
+}
diff --git a/packages/web3-subprovider/src/index.js b/packages/web3-subprovider/src/index.js
new file mode 100644
index 000000000..f5fad2d4b
--- /dev/null
+++ b/packages/web3-subprovider/src/index.js
@@ -0,0 +1,177 @@
+//@flow
+import AppEth from "@ledgerhq/hw-app-eth";
+import TransportU2F from "@ledgerhq/hw-transport-u2f";
+import { TransportError } from "@ledgerhq/hw-transport";
+import HookedWalletSubprovider from "web3-provider-engine/subproviders/hooked-wallet";
+import stripHexPrefix from "strip-hex-prefix";
+import EthereumTx from "ethereumjs-tx";
+
+const allowedHdPaths = ["44'/60'", "44'/61'"];
+
+function obtainPathComponentsFromDerivationPath(derivationPath) {
+  // check if derivation path follows 44'/60'/x'/n pattern
+  const regExp = /^(44'\/6[0|1]'\/\d+'?\/)(\d+)$/;
+  const matchResult = regExp.exec(derivationPath);
+  if (matchResult === null) {
+    throw new TransportError(
+      "To get multiple accounts your derivation path must follow pattern 44'/60|61'/x'/n ",
+      "InvalidDerivationPath"
+    );
+  }
+  return { basePath: matchResult[1], index: parseInt(matchResult[2], 10) };
+}
+
+/**
+ */
+type SubproviderOptions = {
+  // refer to https://github.com/ethereum/EIPs/blob/master/EIPS/eip-155.md
+  networkId: number,
+  // derivation path
+  path?: string,
+  // should use actively validate on the device
+  askConfirm?: boolean,
+  // number of accounts to derivate
+  accountsLength?: number,
+  // offset index to use to start derivating the accounts
+  accountsOffset?: number,
+  // timeout to wait the device
+  timeout?: number
+};
+
+const defaultOptions = {
+  networkId: 1, // mainnet
+  path: "44'/60'/0'/0", // ledger default derivation path
+  askConfirm: false,
+  accountsLength: 1,
+  accountsOffset: 0
+};
+
+/**
+ * Create a HookedWalletSubprovider for Ledger devices.
+ * @example
+import Web3 from "web3";
+import createLedgerSubprovider from "@ledgerhq/web3-subprovider";
+import ProviderEngine from "web3-provider-engine";
+import RpcSubprovider from "web3-provider-engine/subproviders/rpc";
+const engine = new ProviderEngine();
+const ledger = await createLedgerSubprovider({
+  accountsLength: 5
+});
+engine.addProvider(ledger);
+engine.addProvider(new RpcSubprovider({ rpcUrl }));
+engine.start();
+const web3 = new Web3(engine);
+ */
+export default async function createLedgerSubprovider(
+  options?: SubproviderOptions
+): Promise<HookedWalletSubprovider> {
+  const {
+    networkId,
+    path,
+    askConfirm,
+    accountsLength,
+    accountsOffset,
+    timeout
+  } = {
+    ...defaultOptions,
+    ...options
+  };
+  if (!allowedHdPaths.some(hdPref => path.startsWith(hdPref))) {
+    throw new TransportError(
+      "Ledger derivation path allowed are " +
+        allowedHdPaths.join(", ") +
+        ". " +
+        path +
+        " is not supported",
+      "InvalidDerivationPath"
+    );
+  }
+  const supported = await TransportU2F.isSupported();
+  if (!supported)
+    throw new TransportError(
+      "U2F is not supported by your browser",
+      "U2FNotSupported"
+    );
+  const transport = await TransportU2F.create(timeout);
+  const eth = new AppEth(transport);
+
+  const pathComponents = obtainPathComponentsFromDerivationPath(path);
+
+  async function getAccounts() {
+    const addresses = {};
+    for (let i = accountsOffset; i < accountsOffset + accountsLength; i++) {
+      const path =
+        pathComponents.basePath + (pathComponents.index + i).toString();
+      const address = await eth.getAddress(path, askConfirm, false);
+      addresses[path] = address.address;
+    }
+    return addresses;
+  }
+
+  async function signPersonalMessage(msgData) {
+    const result = await eth.signPersonalMessage(
+      path,
+      stripHexPrefix(msgData.data)
+    );
+    const v = parseInt(result.v, 10) - 27;
+    let vHex = v.toString(16);
+    if (vHex.length < 2) {
+      vHex = `0${v}`;
+    }
+    return `0x${result.r}${result.s}${vHex}`;
+  }
+
+  async function signTransaction(txData) {
+    const tx = new EthereumTx(txData);
+
+    // Set the EIP155 bits
+    tx.raw[6] = Buffer.from([networkId]); // v
+    tx.raw[7] = Buffer.from([]); // r
+    tx.raw[8] = Buffer.from([]); // s
+
+    // Pass hex-rlp to ledger for signing
+    const result = await eth.signTransaction(
+      path,
+      tx.serialize().toString("hex")
+    );
+
+    // Store signature in transaction
+    tx.v = Buffer.from(result.v, "hex");
+    tx.r = Buffer.from(result.r, "hex");
+    tx.s = Buffer.from(result.s, "hex");
+
+    // EIP155: v should be chain_id * 2 + {35, 36}
+    const signedChainId = Math.floor((tx.v[0] - 35) / 2);
+    const validChainId = networkId & 0xff; // FIXME this is to fixed a current workaround that app don't support > 0xff
+    if (signedChainId !== validChainId) {
+      throw new TransportError(
+        "Invalid networkId signature returned. Expected: " +
+          networkId +
+          ", Got: " +
+          signedChainId,
+        "InvalidNetworkId"
+      );
+    }
+
+    return `0x${tx.serialize().toString("hex")}`;
+  }
+
+  const subprovider = new HookedWalletSubprovider({
+    getAccounts: callback => {
+      getAccounts()
+        .then(res => callback(null, Object.values(res)))
+        .catch(err => callback(err, null));
+    },
+    signPersonalMessage: (txData, callback) => {
+      signPersonalMessage(txData)
+        .then(res => callback(null, res))
+        .catch(err => callback(err, null));
+    },
+    signTransaction: (txData, callback) => {
+      signTransaction(txData)
+        .then(res => callback(null, res))
+        .catch(err => callback(err, null));
+    }
+  });
+  return subprovider;
+}
diff --git a/yarn.lock b/yarn.lock
index 1c2cac1c7..5b91879f0 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -11,8 +11,8 @@
     js-tokens "^3.0.0"
 
 "@babel/code-frame@^7.0.0-beta.35":
-  version "7.0.0-beta.38"
-  resolved "https://registry.yarnpkg.com/@babel/code-frame/-/code-frame-7.0.0-beta.38.tgz#c0af5930617e55e050336838e3a3670983b0b2b2"
+  version "7.0.0-beta.39"
+  resolved "https://registry.yarnpkg.com/@babel/code-frame/-/code-frame-7.0.0-beta.39.tgz#91c90bb65207fc5a55128cb54956ded39e850457"
   dependencies:
     chalk "^2.0.0"
     esutils "^2.0.2"
@@ -83,6 +83,18 @@ abbrev@1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/abbrev/-/abbrev-1.1.1.tgz#f8f2c887ad10bf67f634f005b6987fed3179aac8"
 
+abstract-leveldown@~2.6.0:
+  version "2.6.3"
+  resolved "https://registry.yarnpkg.com/abstract-leveldown/-/abstract-leveldown-2.6.3.tgz#1c5e8c6a5ef965ae8c35dfb3a8770c476b82c4b8"
+  dependencies:
+    xtend "~4.0.0"
+
+abstract-leveldown@~2.7.1:
+  version "2.7.2"
+  resolved "https://registry.yarnpkg.com/abstract-leveldown/-/abstract-leveldown-2.7.2.tgz#87a44d7ebebc341d59665204834c8b7e0932cc93"
+  dependencies:
+    xtend "~4.0.0"
+
 accepts@~1.3.4:
   version "1.3.4"
   resolved "https://registry.yarnpkg.com/accepts/-/accepts-1.3.4.tgz#86246758c7dd6d21a6474ff084a4740ec05eb21f"
@@ -122,9 +134,9 @@ acorn@^4.0.3, acorn@^4.0.4:
   version "4.0.13"
   resolved "https://registry.yarnpkg.com/acorn/-/acorn-4.0.13.tgz#105495ae5361d697bd195c825192e1ad7f253787"
 
-acorn@^5.0.0, acorn@^5.2.1, acorn@^5.3.0:
-  version "5.3.0"
-  resolved "https://registry.yarnpkg.com/acorn/-/acorn-5.3.0.tgz#7446d39459c54fb49a80e6ee6478149b940ec822"
+acorn@^5.0.0, acorn@^5.2.1, acorn@^5.3.0, acorn@^5.4.0:
+  version "5.4.1"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-5.4.1.tgz#fdc58d9d17f4a4e98d102ded826a9b9759125102"
 
 add-stream@^1.0.0:
   version "1.0.0"
@@ -170,11 +182,11 @@ amdefine@>=0.0.4:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/amdefine/-/amdefine-1.0.1.tgz#4a5282ac164729e93619bcfd3ad151f817ce91f5"
 
-ansi-align@^1.1.0:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/ansi-align/-/ansi-align-1.1.0.tgz#2f0c1658829739add5ebb15e6b0c6e3423f016ba"
+ansi-align@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/ansi-align/-/ansi-align-2.0.0.tgz#c36aeccba563b89ceb556f3690f0b1d9e3547f7f"
   dependencies:
-    string-width "^1.0.1"
+    string-width "^2.0.0"
 
 ansi-escapes@^1.4.0:
   version "1.4.0"
@@ -262,10 +274,11 @@ argparse@^1.0.7:
     sprintf-js "~1.0.2"
 
 aria-query@^0.7.0:
-  version "0.7.0"
-  resolved "https://registry.yarnpkg.com/aria-query/-/aria-query-0.7.0.tgz#4af10a1e61573ddea0cf3b99b51c52c05b424d24"
+  version "0.7.1"
+  resolved "https://registry.yarnpkg.com/aria-query/-/aria-query-0.7.1.tgz#26cbb5aff64144b0a825be1846e0b16cfa00b11e"
   dependencies:
     ast-types-flow "0.0.7"
+    commander "^2.11.0"
 
 arr-diff@^2.0.0:
   version "2.0.0"
@@ -402,15 +415,27 @@ async-each@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/async-each/-/async-each-1.0.1.tgz#19d386a1d9edc6e7c1c85d388aedbcc56d33602d"
 
+async-eventemitter@^0.2.2:
+  version "0.2.4"
+  resolved "https://registry.yarnpkg.com/async-eventemitter/-/async-eventemitter-0.2.4.tgz#f5e7c8ca7d3e46aab9ec40a292baf686a0bafaca"
+  dependencies:
+    async "^2.4.0"
+
+async-eventemitter@ahultgren/async-eventemitter#fa06e39e56786ba541c180061dbf2c0a5bbf951c:
+  version "0.2.3"
+  resolved "https://codeload.github.com/ahultgren/async-eventemitter/tar.gz/fa06e39e56786ba541c180061dbf2c0a5bbf951c"
+  dependencies:
+    async "^2.4.0"
+
 async-limiter@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/async-limiter/-/async-limiter-1.0.0.tgz#78faed8c3d074ab81f22b4e985d79e8738f720f8"
 
-async@^1.4.0, async@^1.5.0, async@^1.5.2:
+async@^1.4.0, async@^1.4.2, async@^1.5.0, async@^1.5.2:
   version "1.5.2"
   resolved "https://registry.yarnpkg.com/async/-/async-1.5.2.tgz#ec6a61ae56480c0c3cb241c95618e20892f9672a"
 
-async@^2.1.2, async@^2.1.4, async@^2.4.1:
+async@^2.0.1, async@^2.1.2, async@^2.1.4, async@^2.4.0, async@^2.4.1, async@^2.5.0:
   version "2.6.0"
   resolved "https://registry.yarnpkg.com/async/-/async-2.6.0.tgz#61a29abb6fcc026fea77e56d1c6ec53a795951f4"
   dependencies:
@@ -493,7 +518,7 @@ babel-code-frame@6.26.0, babel-code-frame@^6.11.0, babel-code-frame@^6.22.0, bab
     esutils "^2.0.2"
     js-tokens "^3.0.2"
 
-babel-core@6.26.0, babel-core@^6.0.0, babel-core@^6.17.0, babel-core@^6.26.0:
+babel-core@6.26.0, babel-core@^6.0.0, babel-core@^6.0.14, babel-core@^6.17.0, babel-core@^6.26.0:
   version "6.26.0"
   resolved "https://registry.yarnpkg.com/babel-core/-/babel-core-6.26.0.tgz#af32f78b31a6fcef119c87b0fd8d9753f03a0bb8"
   dependencies:
@@ -1120,7 +1145,7 @@ babel-polyfill@^6.26.0:
     core-js "^2.5.0"
     regenerator-runtime "^0.10.5"
 
-babel-preset-env@1.6.1, babel-preset-env@^1.6.0, babel-preset-env@^1.6.1:
+babel-preset-env@1.6.1, babel-preset-env@^1.3.2, babel-preset-env@^1.6.0, babel-preset-env@^1.6.1:
   version "1.6.1"
   resolved "https://registry.yarnpkg.com/babel-preset-env/-/babel-preset-env-1.6.1.tgz#a18b564cc9b9afdf4aae57ae3c1b0d99188e6f48"
   dependencies:
@@ -1290,6 +1315,13 @@ babel-types@^6.16.0, babel-types@^6.18.0, babel-types@^6.19.0, babel-types@^6.23
     lodash "^4.17.4"
     to-fast-properties "^1.0.3"
 
+babelify@^7.3.0:
+  version "7.3.0"
+  resolved "https://registry.yarnpkg.com/babelify/-/babelify-7.3.0.tgz#aa56aede7067fd7bd549666ee16dc285087e88e5"
+  dependencies:
+    babel-core "^6.0.14"
+    object-assign "^4.0.0"
+
 babelify@^8.0.0:
   version "8.0.0"
   resolved "https://registry.yarnpkg.com/babelify/-/babelify-8.0.0.tgz#6f60f5f062bfe7695754ef2403b842014a580ed3"
@@ -1355,7 +1387,7 @@ binary-extensions@^1.0.0:
     buffers "~0.1.1"
     chainsaw "~0.1.0"
 
-bindings@^1.3.0:
+bindings@^1.2.1, bindings@^1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/bindings/-/bindings-1.3.0.tgz#b346f6ecf6a95f5a815c5839fc7cdb22502f1ed7"
 
@@ -1363,6 +1395,12 @@ bip32-path@0.4.2:
   version "0.4.2"
   resolved "https://registry.yarnpkg.com/bip32-path/-/bip32-path-0.4.2.tgz#5db0416ad6822712f077836e2557b8697c0c7c99"
 
+bip66@^1.1.3:
+  version "1.1.5"
+  resolved "https://registry.yarnpkg.com/bip66/-/bip66-1.1.5.tgz#01fa8748785ca70955d5011217d1b3139969ca22"
+  dependencies:
+    safe-buffer "^5.0.1"
+
 bl@^1.0.0:
   version "1.2.1"
   resolved "https://registry.yarnpkg.com/bl/-/bl-1.2.1.tgz#cac328f7bee45730d404b692203fcb590e172d5e"
@@ -1379,7 +1417,7 @@ bluebird@^3.4.7:
   version "3.5.1"
   resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-3.5.1.tgz#d9551f9de98f1fcda1e683d17ee91a0602ee2eb9"
 
-bn.js@^4.0.0, bn.js@^4.1.0, bn.js@^4.1.1, bn.js@^4.4.0:
+bn.js@^4.0.0, bn.js@^4.1.0, bn.js@^4.1.1, bn.js@^4.10.0, bn.js@^4.11.3, bn.js@^4.4.0, bn.js@^4.8.0:
   version "4.11.8"
   resolved "https://registry.yarnpkg.com/bn.js/-/bn.js-4.11.8.tgz#2cde09eb5ee341f484746bb0309b3253b1b1442f"
 
@@ -1448,19 +1486,17 @@ boom@5.x.x:
   dependencies:
     hoek "4.x.x"
 
-boxen@^0.6.0:
-  version "0.6.0"
-  resolved "https://registry.yarnpkg.com/boxen/-/boxen-0.6.0.tgz#8364d4248ac34ff0ef1b2f2bf49a6c60ce0d81b6"
+boxen@^1.2.1:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/boxen/-/boxen-1.3.0.tgz#55c6c39a8ba58d9c61ad22cd877532deb665a20b"
   dependencies:
-    ansi-align "^1.1.0"
-    camelcase "^2.1.0"
-    chalk "^1.1.1"
+    ansi-align "^2.0.0"
+    camelcase "^4.0.0"
+    chalk "^2.0.1"
     cli-boxes "^1.0.0"
-    filled-array "^1.0.0"
-    object-assign "^4.0.1"
-    repeating "^2.0.0"
-    string-width "^1.0.1"
-    widest-line "^1.0.0"
+    string-width "^2.0.0"
+    term-size "^1.2.0"
+    widest-line "^2.0.0"
 
 brace-expansion@^1.0.0, brace-expansion@^1.1.7:
   version "1.1.8"
@@ -1518,7 +1554,7 @@ browser-resolve@^1.11.0, browser-resolve@^1.11.2, browser-resolve@^1.7.0:
   dependencies:
     resolve "1.1.7"
 
-browserify-aes@^1.0.0, browserify-aes@^1.0.4:
+browserify-aes@^1.0.0, browserify-aes@^1.0.4, browserify-aes@^1.0.6:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/browserify-aes/-/browserify-aes-1.1.1.tgz#38b7ab55edb806ff2dcda1a7f1620773a477c49f"
   dependencies:
@@ -1552,6 +1588,12 @@ browserify-rsa@^4.0.0:
     bn.js "^4.1.0"
     randombytes "^2.0.1"
 
+browserify-sha3@^0.0.1:
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/browserify-sha3/-/browserify-sha3-0.0.1.tgz#3ff34a3006ef15c0fb3567e541b91a2340123d11"
+  dependencies:
+    js-sha3 "^0.3.1"
+
 browserify-sign@^4.0.0:
   version "4.0.4"
   resolved "https://registry.yarnpkg.com/browserify-sign/-/browserify-sign-4.0.4.tgz#aa4eb68e5d7b658baa6bf6a57e630cbd7a93d298"
@@ -1570,58 +1612,6 @@ browserify-zlib@^0.2.0, browserify-zlib@~0.2.0:
   dependencies:
     pako "~1.0.5"
 
-browserify@^14.0.0:
-  version "14.5.0"
-  resolved "https://registry.yarnpkg.com/browserify/-/browserify-14.5.0.tgz#0bbbce521acd6e4d1d54d8e9365008efb85a9cc5"
-  dependencies:
-    JSONStream "^1.0.3"
-    assert "^1.4.0"
-    browser-pack "^6.0.1"
-    browser-resolve "^1.11.0"
-    browserify-zlib "~0.2.0"
-    buffer "^5.0.2"
-    cached-path-relative "^1.0.0"
-    concat-stream "~1.5.1"
-    console-browserify "^1.1.0"
-    constants-browserify "~1.0.0"
-    crypto-browserify "^3.0.0"
-    defined "^1.0.0"
-    deps-sort "^2.0.0"
-    domain-browser "~1.1.0"
-    duplexer2 "~0.1.2"
-    events "~1.1.0"
-    glob "^7.1.0"
-    has "^1.0.0"
-    htmlescape "^1.1.0"
-    https-browserify "^1.0.0"
-    inherits "~2.0.1"
-    insert-module-globals "^7.0.0"
-    labeled-stream-splicer "^2.0.0"
-    module-deps "^4.0.8"
-    os-browserify "~0.3.0"
-    parents "^1.0.1"
-    path-browserify "~0.0.0"
-    process "~0.11.0"
-    punycode "^1.3.2"
-    querystring-es3 "~0.2.0"
-    read-only-stream "^2.0.0"
-    readable-stream "^2.0.2"
-    resolve "^1.1.4"
-    shasum "^1.0.0"
-    shell-quote "^1.6.1"
-    stream-browserify "^2.0.0"
-    stream-http "^2.0.0"
-    string_decoder "~1.0.0"
-    subarg "^1.0.0"
-    syntax-error "^1.1.1"
-    through2 "^2.0.0"
-    timers-browserify "^1.0.1"
-    tty-browserify "~0.0.0"
-    url "~0.11.0"
-    util "~0.10.1"
-    vm-browserify "~0.0.1"
-    xtend "^4.0.0"
-
 browserify@^15.1.0, browserify@^15.2.0:
   version "15.2.0"
   resolved "https://registry.yarnpkg.com/browserify/-/browserify-15.2.0.tgz#1e121ba1fa72cf9fd2d8df002f8674b68b45df89"
@@ -1841,7 +1831,7 @@ camelcase@^1.0.2:
   version "1.2.1"
   resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-1.2.1.tgz#9bb5304d2e0b56698b2c758b08a3eaa9daa58a39"
 
-camelcase@^2.0.0, camelcase@^2.1.0:
+camelcase@^2.0.0:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-2.1.1.tgz#7c1d16d679a1bbe59ca02cacecfb011e201f5a1f"
 
@@ -1849,7 +1839,7 @@ camelcase@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-3.0.0.tgz#32fc4b9fcdaf845fcdf7e73bb97cac2261f0ab0a"
 
-camelcase@^4.1.0:
+camelcase@^4.0.0, camelcase@^4.1.0:
   version "4.1.0"
   resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-4.1.0.tgz#d545635be1e33c542649c69173e5de6acfae34dd"
 
@@ -1863,8 +1853,8 @@ caniuse-api@^1.5.2:
     lodash.uniq "^4.5.0"
 
 caniuse-db@^1.0.30000529, caniuse-db@^1.0.30000634, caniuse-db@^1.0.30000639:
-  version "1.0.30000794"
-  resolved "https://registry.yarnpkg.com/caniuse-db/-/caniuse-db-1.0.30000794.tgz#bbe71104fa277ce4b362387d54905e8b88e52f35"
+  version "1.0.30000801"
+  resolved "https://registry.yarnpkg.com/caniuse-db/-/caniuse-db-1.0.30000801.tgz#a1d49def94c4e5aca5ccf1d58812e4668fac19d4"
 
 caniuse-lite@^1.0.30000748, caniuse-lite@^1.0.30000792:
   version "1.0.30000792"
@@ -1899,7 +1889,7 @@ chainsaw@~0.1.0:
   dependencies:
     traverse ">=0.3.0 <0.4"
 
-chalk@1.1.3, chalk@^1.0.0, chalk@^1.1.1, chalk@^1.1.3:
+chalk@1.1.3, chalk@^1.1.3:
   version "1.1.3"
   resolved "https://registry.yarnpkg.com/chalk/-/chalk-1.1.3.tgz#a8115c55e4a702fe4d150abd3872822a7e09fc98"
   dependencies:
@@ -1951,6 +1941,12 @@ charenc@~0.0.1:
   version "0.0.2"
   resolved "https://registry.yarnpkg.com/charenc/-/charenc-0.0.2.tgz#c0a1d2f3a7092e03774bfa83f14c0fc5790a8667"
 
+checkpoint-store@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/checkpoint-store/-/checkpoint-store-1.1.0.tgz#04e4cb516b91433893581e6d4601a78e9552ea06"
+  dependencies:
+    functional-red-black-tree "^1.0.1"
+
 chokidar@^1.0.0, chokidar@^1.0.1, chokidar@^1.2.0, chokidar@^1.6.0, chokidar@^1.6.1, chokidar@^1.7.0:
   version "1.7.0"
   resolved "https://registry.yarnpkg.com/chokidar/-/chokidar-1.7.0.tgz#798e689778151c8076b4b360e5edd28cda2bb468"
@@ -2073,7 +2069,7 @@ clone@^1.0.2:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/clone/-/clone-1.0.3.tgz#298d7e2231660f40c003c2ed3140decf3f53085f"
 
-clone@^2.1.1:
+clone@^2.0.0, clone@^2.1.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/clone/-/clone-2.1.1.tgz#d217d1e961118e3ac9a4b8bba3285553bf647cdb"
 
@@ -2255,19 +2251,16 @@ concat-stream@~1.5.0, concat-stream@~1.5.1:
     readable-stream "~2.0.0"
     typedarray "~0.0.5"
 
-configstore@^2.0.0:
-  version "2.1.0"
-  resolved "https://registry.yarnpkg.com/configstore/-/configstore-2.1.0.tgz#737a3a7036e9886102aa6099e47bb33ab1aba1a1"
+configstore@^3.0.0:
+  version "3.1.1"
+  resolved "https://registry.yarnpkg.com/configstore/-/configstore-3.1.1.tgz#094ee662ab83fad9917678de114faaea8fcdca90"
   dependencies:
-    dot-prop "^3.0.0"
+    dot-prop "^4.1.0"
     graceful-fs "^4.1.2"
-    mkdirp "^0.5.0"
-    object-assign "^4.0.1"
-    os-tmpdir "^1.0.0"
-    osenv "^0.1.0"
-    uuid "^2.0.1"
-    write-file-atomic "^1.1.2"
-    xdg-basedir "^2.0.0"
+    make-dir "^1.0.0"
+    unique-string "^1.0.0"
+    write-file-atomic "^2.0.0"
+    xdg-basedir "^3.0.0"
 
 connect-history-api-fallback@^1.3.0:
   version "1.5.0"
@@ -2311,46 +2304,46 @@ continuable-cache@^0.3.1:
   version "0.3.1"
   resolved "https://registry.yarnpkg.com/continuable-cache/-/continuable-cache-0.3.1.tgz#bd727a7faed77e71ff3985ac93351a912733ad0f"
 
-conventional-changelog-angular@^1.5.2:
-  version "1.6.0"
-  resolved "https://registry.yarnpkg.com/conventional-changelog-angular/-/conventional-changelog-angular-1.6.0.tgz#0a26a071f2c9fcfcf2b86ba0cfbf6e6301b75bfa"
+conventional-changelog-angular@^1.6.1:
+  version "1.6.1"
+  resolved "https://registry.yarnpkg.com/conventional-changelog-angular/-/conventional-changelog-angular-1.6.1.tgz#e1434d017c854032b272f690424a8c0ca16dc318"
   dependencies:
     compare-func "^1.3.1"
     q "^1.4.1"
 
-conventional-changelog-atom@^0.1.2:
-  version "0.1.2"
-  resolved "https://registry.yarnpkg.com/conventional-changelog-atom/-/conventional-changelog-atom-0.1.2.tgz#12595ad5267a6937c34cf900281b1c65198a4c63"
+conventional-changelog-atom@^0.2.0:
+  version "0.2.0"
+  resolved "https://registry.yarnpkg.com/conventional-changelog-atom/-/conventional-changelog-atom-0.2.0.tgz#72f18e5c74e3d8807411252fe013818ddffa7157"
   dependencies:
     q "^1.4.1"
 
 conventional-changelog-cli@^1.3.2:
-  version "1.3.5"
-  resolved "https://registry.yarnpkg.com/conventional-changelog-cli/-/conventional-changelog-cli-1.3.5.tgz#46c51496216b7406588883defa6fac589e9bb31e"
+  version "1.3.8"
+  resolved "https://registry.yarnpkg.com/conventional-changelog-cli/-/conventional-changelog-cli-1.3.8.tgz#3b3f3591cb8d1f154bdb28e1819c5fcd8d967536"
   dependencies:
     add-stream "^1.0.0"
-    conventional-changelog "^1.1.7"
+    conventional-changelog "^1.1.10"
     lodash "^4.1.0"
     meow "^3.7.0"
     tempfile "^1.1.1"
 
-conventional-changelog-codemirror@^0.2.1:
-  version "0.2.1"
-  resolved "https://registry.yarnpkg.com/conventional-changelog-codemirror/-/conventional-changelog-codemirror-0.2.1.tgz#299a4f7147baf350e6c8158fc54954a291c5cc09"
+conventional-changelog-codemirror@^0.3.0:
+  version "0.3.0"
+  resolved "https://registry.yarnpkg.com/conventional-changelog-codemirror/-/conventional-changelog-codemirror-0.3.0.tgz#4dd8abb9f521a638cab49f683496c26b8a5c6d31"
   dependencies:
     q "^1.4.1"
 
-conventional-changelog-core@^1.9.3:
-  version "1.9.5"
-  resolved "https://registry.yarnpkg.com/conventional-changelog-core/-/conventional-changelog-core-1.9.5.tgz#5db7566dad7c0cb75daf47fbb2976f7bf9928c1d"
+conventional-changelog-core@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/conventional-changelog-core/-/conventional-changelog-core-2.0.0.tgz#1bdf7d21f3d066427ff9e07db0a2c5dd60015b9f"
   dependencies:
-    conventional-changelog-writer "^2.0.3"
+    conventional-changelog-writer "^3.0.0"
     conventional-commits-parser "^2.1.0"
     dateformat "^1.0.12"
     get-pkg-repo "^1.0.0"
     git-raw-commits "^1.3.0"
     git-remote-origin-url "^2.0.0"
-    git-semver-tags "^1.2.3"
+    git-semver-tags "^1.3.0"
     lodash "^4.0.0"
     normalize-package-data "^2.3.5"
     q "^1.4.1"
@@ -2358,21 +2351,21 @@ conventional-changelog-core@^1.9.3:
     read-pkg-up "^1.0.1"
     through2 "^2.0.0"
 
-conventional-changelog-ember@^0.2.9:
-  version "0.2.10"
-  resolved "https://registry.yarnpkg.com/conventional-changelog-ember/-/conventional-changelog-ember-0.2.10.tgz#dcd6e4cdc2e6c2b58653cf4d2cb1656a60421929"
+conventional-changelog-ember@^0.3.1:
+  version "0.3.1"
+  resolved "https://registry.yarnpkg.com/conventional-changelog-ember/-/conventional-changelog-ember-0.3.1.tgz#bc71dc0a57e5c7ed0bf0538c32e44220691871d1"
   dependencies:
     q "^1.4.1"
 
-conventional-changelog-eslint@^0.2.1:
-  version "0.2.1"
-  resolved "https://registry.yarnpkg.com/conventional-changelog-eslint/-/conventional-changelog-eslint-0.2.1.tgz#2c2a11beb216f80649ba72834180293b687c0662"
+conventional-changelog-eslint@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/conventional-changelog-eslint/-/conventional-changelog-eslint-1.0.0.tgz#c63cd9d6f09d4e204530ae7369d7a20a167bc6bc"
   dependencies:
     q "^1.4.1"
 
-conventional-changelog-express@^0.2.1:
-  version "0.2.1"
-  resolved "https://registry.yarnpkg.com/conventional-changelog-express/-/conventional-changelog-express-0.2.1.tgz#838d9e1e6c9099703b150b9c19aa2d781742bd6c"
+conventional-changelog-express@^0.3.0:
+  version "0.3.0"
+  resolved "https://registry.yarnpkg.com/conventional-changelog-express/-/conventional-changelog-express-0.3.0.tgz#5ed006f48682d8615ee0ab5f53cacb26fbd3e1c8"
   dependencies:
     q "^1.4.1"
 
@@ -2388,16 +2381,16 @@ conventional-changelog-jscs@^0.1.0:
   dependencies:
     q "^1.4.1"
 
-conventional-changelog-jshint@^0.2.1:
-  version "0.2.1"
-  resolved "https://registry.yarnpkg.com/conventional-changelog-jshint/-/conventional-changelog-jshint-0.2.1.tgz#86139bb3ac99899f2b177e9617e09b37d99bcf3a"
+conventional-changelog-jshint@^0.3.0:
+  version "0.3.0"
+  resolved "https://registry.yarnpkg.com/conventional-changelog-jshint/-/conventional-changelog-jshint-0.3.0.tgz#0393fd468113baf73cba911d17c5826423366a28"
   dependencies:
     compare-func "^1.3.1"
     q "^1.4.1"
 
-conventional-changelog-writer@^2.0.3:
-  version "2.0.3"
-  resolved "https://registry.yarnpkg.com/conventional-changelog-writer/-/conventional-changelog-writer-2.0.3.tgz#073b0c39f1cc8fc0fd9b1566e93833f51489c81c"
+conventional-changelog-writer@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/conventional-changelog-writer/-/conventional-changelog-writer-3.0.0.tgz#e106154ed94341e387d717b61be2181ff53254cc"
   dependencies:
     compare-func "^1.3.1"
     conventional-commits-filter "^1.1.1"
@@ -2410,20 +2403,20 @@ conventional-changelog-writer@^2.0.3:
     split "^1.0.0"
     through2 "^2.0.0"
 
-conventional-changelog@^1.1.7:
-  version "1.1.7"
-  resolved "https://registry.yarnpkg.com/conventional-changelog/-/conventional-changelog-1.1.7.tgz#9151a62b1d8edb2d82711dabf5b7cf71041f82b1"
-  dependencies:
-    conventional-changelog-angular "^1.5.2"
-    conventional-changelog-atom "^0.1.2"
-    conventional-changelog-codemirror "^0.2.1"
-    conventional-changelog-core "^1.9.3"
-    conventional-changelog-ember "^0.2.9"
-    conventional-changelog-eslint "^0.2.1"
-    conventional-changelog-express "^0.2.1"
+conventional-changelog@^1.1.10:
+  version "1.1.10"
+  resolved "https://registry.yarnpkg.com/conventional-changelog/-/conventional-changelog-1.1.10.tgz#d9bb3aad9086152d283e4707fb45a5b7a28e9e98"
+  dependencies:
+    conventional-changelog-angular "^1.6.1"
+    conventional-changelog-atom "^0.2.0"
+    conventional-changelog-codemirror "^0.3.0"
+    conventional-changelog-core "^2.0.0"
+    conventional-changelog-ember "^0.3.1"
+    conventional-changelog-eslint "^1.0.0"
+    conventional-changelog-express "^0.3.0"
     conventional-changelog-jquery "^0.1.0"
     conventional-changelog-jscs "^0.1.0"
-    conventional-changelog-jshint "^0.2.1"
+    conventional-changelog-jshint "^0.3.0"
 
 conventional-commits-filter@^1.1.1:
   version "1.1.1"
@@ -2445,14 +2438,14 @@ conventional-commits-parser@^2.1.0:
     trim-off-newlines "^1.0.0"
 
 conventional-recommended-bump@^1.0.1:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/conventional-recommended-bump/-/conventional-recommended-bump-1.1.0.tgz#964d4fcc70fb5259d41fa9b39d3df6afdb87d253"
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/conventional-recommended-bump/-/conventional-recommended-bump-1.2.0.tgz#864fb955825d9c6056620cee4657b0dc0628a3e9"
   dependencies:
     concat-stream "^1.4.10"
     conventional-commits-filter "^1.1.1"
     conventional-commits-parser "^2.1.0"
     git-raw-commits "^1.3.0"
-    git-semver-tags "^1.2.3"
+    git-semver-tags "^1.3.0"
     meow "^3.3.0"
     object-assign "^4.0.1"
 
@@ -2514,7 +2507,7 @@ create-ecdh@^4.0.0:
     bn.js "^4.1.0"
     elliptic "^6.0.0"
 
-create-error-class@^3.0.0, create-error-class@^3.0.1:
+create-error-class@^3.0.0:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/create-error-class/-/create-error-class-3.0.2.tgz#06be7abef947a3f14a30fd610671d401bca8b7b6"
   dependencies:
@@ -2580,6 +2573,10 @@ crypto-browserify@^3.0.0, crypto-browserify@^3.11.0:
     randombytes "^2.0.0"
     randomfill "^1.0.3"
 
+crypto-random-string@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/crypto-random-string/-/crypto-random-string-1.0.0.tgz#a230f64f568310e1498009940790ec99545bca7e"
+
 css-color-names@0.0.4:
   version "0.0.4"
   resolved "https://registry.yarnpkg.com/css-color-names/-/css-color-names-0.0.4.tgz#808adc2e79cf84738069b646cb20ec27beb629e0"
@@ -2755,7 +2752,7 @@ dedent@^0.7.0:
   version "0.7.0"
   resolved "https://registry.yarnpkg.com/dedent/-/dedent-0.7.0.tgz#2495ddbaf6eb874abb0e1be9df22d2e5a544326c"
 
-deep-equal@^1.0.1:
+deep-equal@^1.0.1, deep-equal@~1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/deep-equal/-/deep-equal-1.0.1.tgz#f5d260292b660e084eff4cdbc9f08ad3247448b5"
 
@@ -2779,6 +2776,12 @@ defaults@^1.0.3:
   dependencies:
     clone "^1.0.2"
 
+deferred-leveldown@~1.2.1:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/deferred-leveldown/-/deferred-leveldown-1.2.2.tgz#3acd2e0b75d1669924bc0a4b642851131173e1eb"
+  dependencies:
+    abstract-leveldown "~2.6.0"
+
 define-properties@^1.1.2:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/define-properties/-/define-properties-1.1.2.tgz#83a73f2fea569898fb737193c8f873caf6d45c94"
@@ -2798,7 +2801,7 @@ define-property@^1.0.0:
   dependencies:
     is-descriptor "^1.0.0"
 
-defined@^1.0.0:
+defined@^1.0.0, defined@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/defined/-/defined-1.0.0.tgz#c98d9bcef75674188e110969151199e39b1fa693"
 
@@ -2938,7 +2941,7 @@ dns-equal@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/dns-equal/-/dns-equal-1.0.0.tgz#b39e7f1da6eb0a75ba9c17324b34753c47e0654d"
 
-dns-packet@^1.0.1:
+dns-packet@^1.3.1:
   version "1.3.1"
   resolved "https://registry.yarnpkg.com/dns-packet/-/dns-packet-1.3.1.tgz#12aa426981075be500b910eedcd0b47dd7deda5a"
   dependencies:
@@ -3043,7 +3046,15 @@ dom-urls@^1.1.0:
   dependencies:
     urijs "^1.16.1"
 
-domain-browser@^1.1.1, domain-browser@~1.1.0:
+dom-walk@^0.1.0:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/dom-walk/-/dom-walk-0.1.1.tgz#672226dc74c8f799ad35307df936aba11acd6018"
+
+domain-browser@^1.1.1:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/domain-browser/-/domain-browser-1.2.0.tgz#3d31f50191a6749dd1375a7f522e823d42e54eda"
+
+domain-browser@~1.1.0:
   version "1.1.7"
   resolved "https://registry.yarnpkg.com/domain-browser/-/domain-browser-1.1.7.tgz#867aa4b093faa05f1de08c06f4d7b21fdf8698bc"
 
@@ -3086,6 +3097,12 @@ dot-prop@^3.0.0:
   dependencies:
     is-obj "^1.0.0"
 
+dot-prop@^4.1.0:
+  version "4.2.0"
+  resolved "https://registry.yarnpkg.com/dot-prop/-/dot-prop-4.2.0.tgz#1f19e0c2e1aa0e32797c49799f2837ac6af69c57"
+  dependencies:
+    is-obj "^1.0.0"
+
 dotenv-expand@4.0.1:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/dotenv-expand/-/dotenv-expand-4.0.1.tgz#68fddc1561814e0a10964111057ff138ced7d7a8"
@@ -3094,7 +3111,15 @@ dotenv@4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/dotenv/-/dotenv-4.0.0.tgz#864ef1379aced55ce6f95debecdce179f7a0cd1d"
 
-duplexer2@^0.1.2, duplexer2@^0.1.4, duplexer2@~0.1.0, duplexer2@~0.1.2:
+drbg.js@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/drbg.js/-/drbg.js-1.0.1.tgz#3e36b6c42b37043823cdbc332d58f31e2445480b"
+  dependencies:
+    browserify-aes "^1.0.6"
+    create-hash "^1.1.2"
+    create-hmac "^1.1.4"
+
+duplexer2@^0.1.2, duplexer2@~0.1.0, duplexer2@~0.1.2:
   version "0.1.4"
   resolved "https://registry.yarnpkg.com/duplexer2/-/duplexer2-0.1.4.tgz#8b12dab878c0d69e3e7891051662a32fc6bddcc1"
   dependencies:
@@ -3128,10 +3153,10 @@ ee-first@1.1.1:
   resolved "https://registry.yarnpkg.com/ee-first/-/ee-first-1.1.1.tgz#590c61156b0ae2f4f0255732a158b266bc56b21d"
 
 electron-to-chromium@^1.2.7, electron-to-chromium@^1.3.30:
-  version "1.3.31"
-  resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.31.tgz#00d832cba9fe2358652b0c48a8816c8e3a037e9f"
+  version "1.3.32"
+  resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.32.tgz#11d0684c0840e003c4be8928f8ac5f35dbc2b4e6"
 
-elliptic@^6.0.0:
+elliptic@^6.0.0, elliptic@^6.2.3:
   version "6.4.0"
   resolved "https://registry.yarnpkg.com/elliptic/-/elliptic-6.4.0.tgz#cac9af8762c85836187003c8dfe193e5e2eae5df"
   dependencies:
@@ -3184,7 +3209,7 @@ entities@~1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/entities/-/entities-1.1.1.tgz#6e5c2d0a5621b5dadaecef80b90edfb5cd7772f0"
 
-errno@^0.1.3, errno@^0.1.4:
+errno@^0.1.3, errno@^0.1.4, errno@~0.1.1:
   version "0.1.6"
   resolved "https://registry.yarnpkg.com/errno/-/errno-0.1.6.tgz#c386ce8a6283f14fc09563b71560908c9bf53026"
   dependencies:
@@ -3203,7 +3228,7 @@ error@^7.0.0:
     string-template "~0.2.1"
     xtend "~4.0.0"
 
-es-abstract@^1.5.1, es-abstract@^1.7.0:
+es-abstract@^1.5.0, es-abstract@^1.5.1, es-abstract@^1.7.0:
   version "1.10.0"
   resolved "https://registry.yarnpkg.com/es-abstract/-/es-abstract-1.10.0.tgz#1ecb36c197842a00d8ee4c2dfd8646bb97d60864"
   dependencies:
@@ -3248,8 +3273,8 @@ es6-map@^0.1.3:
     event-emitter "~0.3.5"
 
 es6-promise@^4.0.5:
-  version "4.2.2"
-  resolved "https://registry.yarnpkg.com/es6-promise/-/es6-promise-4.2.2.tgz#f722d7769af88bd33bc13ec6605e1f92966b82d9"
+  version "4.2.4"
+  resolved "https://registry.yarnpkg.com/es6-promise/-/es6-promise-4.2.4.tgz#dc4221c2b16518760bd8c39a52d8f356fc00ed29"
 
 es6-set@~0.1.5:
   version "0.1.5"
@@ -3450,8 +3475,8 @@ eslint@4.10.0:
     text-table "~0.2.0"
 
 eslint@^4.11.0:
-  version "4.16.0"
-  resolved "https://registry.yarnpkg.com/eslint/-/eslint-4.16.0.tgz#934ada9e98715e1d7bbfd6f6f0519ed2fab35cc1"
+  version "4.17.0"
+  resolved "https://registry.yarnpkg.com/eslint/-/eslint-4.17.0.tgz#dc24bb51ede48df629be7031c71d9dc0ee4f3ddf"
   dependencies:
     ajv "^5.3.0"
     babel-code-frame "^6.22.0"
@@ -3492,10 +3517,10 @@ eslint@^4.11.0:
     text-table "~0.2.0"
 
 espree@^3.5.1, espree@^3.5.2:
-  version "3.5.2"
-  resolved "https://registry.yarnpkg.com/espree/-/espree-3.5.2.tgz#756ada8b979e9dcfcdb30aad8d1a9304a905e1ca"
+  version "3.5.3"
+  resolved "https://registry.yarnpkg.com/espree/-/espree-3.5.3.tgz#931e0af64e7fbbed26b050a29daad1fc64799fa6"
   dependencies:
-    acorn "^5.2.1"
+    acorn "^5.4.0"
     acorn-jsx "^3.0.0"
 
 esprima@^2.6.0:
@@ -3535,6 +3560,117 @@ etag@~1.8.1:
   version "1.8.1"
   resolved "https://registry.yarnpkg.com/etag/-/etag-1.8.1.tgz#41ae2eeb65efa62268aebfea83ac7d79299b0887"
 
+eth-block-tracker@^2.2.2:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/eth-block-tracker/-/eth-block-tracker-2.3.0.tgz#4cb782c8ef8fde2f5dc894921ae1f5c1077c35a4"
+  dependencies:
+    async-eventemitter ahultgren/async-eventemitter#fa06e39e56786ba541c180061dbf2c0a5bbf951c
+    eth-query "^2.1.0"
+    ethereumjs-tx "^1.3.3"
+    ethereumjs-util "^5.1.3"
+    ethjs-util "^0.1.3"
+    json-rpc-engine "^3.6.0"
+    pify "^2.3.0"
+    tape "^4.6.3"
+
+eth-query@^2.1.0:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/eth-query/-/eth-query-2.1.2.tgz#d6741d9000106b51510c72db92d6365456a6da5e"
+  dependencies:
+    json-rpc-random-id "^1.0.0"
+    xtend "^4.0.1"
+
+eth-sig-util@^1.3.0:
+  version "1.4.2"
+  resolved "https://registry.yarnpkg.com/eth-sig-util/-/eth-sig-util-1.4.2.tgz#8d958202c7edbaae839707fba6f09ff327606210"
+  dependencies:
+    ethereumjs-abi "git+https://github.com/ethereumjs/ethereumjs-abi.git"
+    ethereumjs-util "^5.1.1"
+
+ethereum-common@0.2.0:
+  version "0.2.0"
+  resolved "https://registry.yarnpkg.com/ethereum-common/-/ethereum-common-0.2.0.tgz#13bf966131cce1eeade62a1b434249bb4cb120ca"
+
+ethereum-common@^0.0.18:
+  version "0.0.18"
+  resolved "https://registry.yarnpkg.com/ethereum-common/-/ethereum-common-0.0.18.tgz#2fdc3576f232903358976eb39da783213ff9523f"
+
+"ethereumjs-abi@git+https://github.com/ethereumjs/ethereumjs-abi.git":
+  version "0.6.5"
+  resolved "git+https://github.com/ethereumjs/ethereumjs-abi.git#71f123b676f2b2d81bc20f343670d90045a3d3d8"
+  dependencies:
+    bn.js "^4.10.0"
+    ethereumjs-util "^4.3.0"
+
+ethereumjs-account@^2.0.3:
+  version "2.0.4"
+  resolved "https://registry.yarnpkg.com/ethereumjs-account/-/ethereumjs-account-2.0.4.tgz#f8c30231bcb707f4514d8a052c1f9da103624d47"
+  dependencies:
+    ethereumjs-util "^4.0.1"
+    rlp "^2.0.0"
+
+ethereumjs-block@^1.2.2, ethereumjs-block@~1.7.0:
+  version "1.7.0"
+  resolved "https://registry.yarnpkg.com/ethereumjs-block/-/ethereumjs-block-1.7.0.tgz#23d6a765b069500a9f35d1c093ab6b216cbbeb06"
+  dependencies:
+    async "^2.0.1"
+    ethereum-common "0.2.0"
+    ethereumjs-tx "^1.2.2"
+    ethereumjs-util "^5.0.0"
+    merkle-patricia-tree "^2.1.2"
+
+ethereumjs-tx@^1.2.0, ethereumjs-tx@^1.2.2, ethereumjs-tx@^1.3.3:
+  version "1.3.3"
+  resolved "https://registry.yarnpkg.com/ethereumjs-tx/-/ethereumjs-tx-1.3.3.tgz#ece051d3efdbe771ad2a518d61632ca2ab75ecbb"
+  dependencies:
+    ethereum-common "^0.0.18"
+    ethereumjs-util "^5.0.0"
+
+ethereumjs-util@^4.0.1, ethereumjs-util@^4.3.0:
+  version "4.5.0"
+  resolved "https://registry.yarnpkg.com/ethereumjs-util/-/ethereumjs-util-4.5.0.tgz#3e9428b317eebda3d7260d854fddda954b1f1bc6"
+  dependencies:
+    bn.js "^4.8.0"
+    create-hash "^1.1.2"
+    keccakjs "^0.2.0"
+    rlp "^2.0.0"
+    secp256k1 "^3.0.1"
+
+ethereumjs-util@^5.0.0, ethereumjs-util@^5.1.1, ethereumjs-util@^5.1.3:
+  version "5.1.3"
+  resolved "https://registry.yarnpkg.com/ethereumjs-util/-/ethereumjs-util-5.1.3.tgz#0c1f6efb1da9c5b6720a65697859fc0be6672df0"
+  dependencies:
+    bn.js "^4.8.0"
+    create-hash "^1.1.2"
+    ethjs-util "^0.1.3"
+    keccak "^1.0.2"
+    rlp "^2.0.0"
+    safe-buffer "^5.1.1"
+    secp256k1 "^3.0.1"
+
+ethereumjs-vm@^2.0.2:
+  version "2.3.3"
+  resolved "https://registry.yarnpkg.com/ethereumjs-vm/-/ethereumjs-vm-2.3.3.tgz#05719139e0c4a59e829022964a6048b17d2d84b0"
+  dependencies:
+    async "^2.1.2"
+    async-eventemitter "^0.2.2"
+    ethereum-common "0.2.0"
+    ethereumjs-account "^2.0.3"
+    ethereumjs-block "~1.7.0"
+    ethereumjs-util "^5.1.3"
+    fake-merkle-patricia-tree "^1.0.1"
+    functional-red-black-tree "^1.0.1"
+    merkle-patricia-tree "^2.1.2"
+    rustbn.js "~0.1.1"
+    safe-buffer "^5.1.1"
+
+ethjs-util@^0.1.3:
+  version "0.1.4"
+  resolved "https://registry.yarnpkg.com/ethjs-util/-/ethjs-util-0.1.4.tgz#1c8b6879257444ef4d3f3fbbac2ded12cd997d93"
+  dependencies:
+    is-hex-prefixed "1.0.0"
+    strip-hex-prefix "1.0.0"
+
 event-emitter@~0.3.5:
   version "0.3.5"
   resolved "https://registry.yarnpkg.com/event-emitter/-/event-emitter-0.3.5.tgz#df8c69eef1647923c7157b9ce83840610b02cc39"
@@ -3738,6 +3874,12 @@ extsprintf@^1.2.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/extsprintf/-/extsprintf-1.4.0.tgz#e2689f8f356fad62cca65a3a91c5df5f9551692f"
 
+fake-merkle-patricia-tree@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/fake-merkle-patricia-tree/-/fake-merkle-patricia-tree-1.0.1.tgz#4b8c3acfb520afadf9860b1f14cd8ce3402cddd3"
+  dependencies:
+    checkpoint-store "^1.1.0"
+
 fast-deep-equal@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/fast-deep-equal/-/fast-deep-equal-1.0.0.tgz#96256a3bc975595eb36d82e9929d060d893439ff"
@@ -3790,6 +3932,12 @@ fbjs@^0.8.16:
     setimmediate "^1.0.5"
     ua-parser-js "^0.7.9"
 
+fetch-ponyfill@^4.0.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/fetch-ponyfill/-/fetch-ponyfill-4.1.0.tgz#ae3ce5f732c645eab87e4ae8793414709b239893"
+  dependencies:
+    node-fetch "~1.7.1"
+
 figures@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/figures/-/figures-2.0.0.tgz#3ab1a2d2a62c8bfb431a0c94cb797a2fce27c962"
@@ -3844,10 +3992,6 @@ fill-range@^4.0.0:
     repeat-string "^1.6.1"
     to-regex-range "^2.1.0"
 
-filled-array@^1.0.0:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/filled-array/-/filled-array-1.1.0.tgz#c3c4f6c663b923459a9aa29912d2d031f1507f84"
-
 finalhandler@1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/finalhandler/-/finalhandler-1.1.0.tgz#ce0b6855b45853e791b2fcc680046d88253dd7f5"
@@ -3962,13 +4106,19 @@ flow-typed@^2.2.3, flow-typed@^2.3.0:
     which "^1.3.0"
     yargs "^4.2.0"
 
-flush-write-stream@^1.0.0, flush-write-stream@^1.0.2:
+flush-write-stream@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/flush-write-stream/-/flush-write-stream-1.0.2.tgz#c81b90d8746766f1a609a46809946c45dd8ae417"
   dependencies:
     inherits "^2.0.1"
     readable-stream "^2.0.4"
 
+for-each@^0.3.2, for-each@~0.3.2:
+  version "0.3.2"
+  resolved "https://registry.yarnpkg.com/for-each/-/for-each-0.3.2.tgz#2c40450b9348e97f281322593ba96704b9abd4d4"
+  dependencies:
+    is-function "~1.0.0"
+
 for-in@^1.0.1, for-in@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/for-in/-/for-in-1.0.2.tgz#81068d295a8142ec0ac726c6e2200c30fb6d5e80"
@@ -4119,7 +4269,7 @@ fstream@^1.0.0, fstream@^1.0.10, fstream@^1.0.2:
     mkdirp ">=0.5 0"
     rimraf "2"
 
-function-bind@^1.0.2, function-bind@^1.1.1:
+function-bind@^1.0.2, function-bind@^1.1.1, function-bind@~1.1.0:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/function-bind/-/function-bind-1.1.1.tgz#a56899d3ea3c9bab874bb9773b7c5ede92f4895d"
 
@@ -4218,9 +4368,9 @@ git-remote-origin-url@^2.0.0:
     gitconfiglocal "^1.0.0"
     pify "^2.3.0"
 
-git-semver-tags@^1.2.3:
-  version "1.2.3"
-  resolved "https://registry.yarnpkg.com/git-semver-tags/-/git-semver-tags-1.2.3.tgz#188b453882bf9d7a23afd31baba537dab7388d5d"
+git-semver-tags@^1.3.0:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/git-semver-tags/-/git-semver-tags-1.3.0.tgz#b154833a6ab5c360c0ad3b1aa9b8f12ea06de919"
   dependencies:
     meow "^3.3.0"
     semver "^5.0.1"
@@ -4295,7 +4445,7 @@ glob-stream@^6.1.0:
     to-absolute-glob "^2.0.0"
     unique-stream "^2.0.2"
 
-glob@^7.0.0, glob@^7.0.3, glob@^7.0.5, glob@^7.1.0, glob@^7.1.1, glob@^7.1.2:
+glob@^7.0.0, glob@^7.0.3, glob@^7.0.5, glob@^7.1.0, glob@^7.1.1, glob@^7.1.2, glob@~7.1.2:
   version "7.1.2"
   resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.2.tgz#c19c9df9a028702d678612384a6552404c636d15"
   dependencies:
@@ -4306,6 +4456,12 @@ glob@^7.0.0, glob@^7.0.3, glob@^7.0.5, glob@^7.1.0, glob@^7.1.1, glob@^7.1.2:
     once "^1.3.0"
     path-is-absolute "^1.0.0"
 
+global-dirs@^0.1.0:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/global-dirs/-/global-dirs-0.1.1.tgz#b319c0dd4607f353f3be9cca4c72fc148c49f445"
+  dependencies:
+    ini "^1.3.4"
+
 global-modules@1.0.0, global-modules@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/global-modules/-/global-modules-1.0.0.tgz#6d770f0eb523ac78164d72b5e71a8877265cc3ea"
@@ -4324,13 +4480,20 @@ global-prefix@^1.0.1:
     is-windows "^1.0.1"
     which "^1.2.14"
 
+global@~4.3.0:
+  version "4.3.2"
+  resolved "https://registry.yarnpkg.com/global/-/global-4.3.2.tgz#e76989268a6c74c38908b1305b10fc0e394e9d0f"
+  dependencies:
+    min-document "^2.19.0"
+    process "~0.5.1"
+
 globals-docs@^2.4.0:
   version "2.4.0"
   resolved "https://registry.yarnpkg.com/globals-docs/-/globals-docs-2.4.0.tgz#f2c647544eb6161c7c38452808e16e693c2dafbb"
 
 globals@^11.0.1, globals@^11.1.0:
-  version "11.1.0"
-  resolved "https://registry.yarnpkg.com/globals/-/globals-11.1.0.tgz#632644457f5f0e3ae711807183700ebf2e4633e4"
+  version "11.3.0"
+  resolved "https://registry.yarnpkg.com/globals/-/globals-11.3.0.tgz#e04fdb7b9796d8adac9c8f64c14837b2313378b0"
 
 globals@^9.17.0, globals@^9.18.0:
   version "9.18.0"
@@ -4357,26 +4520,6 @@ globby@^6.0.0, globby@^6.1.0:
     pify "^2.0.0"
     pinkie-promise "^2.0.0"
 
-got@^5.0.0:
-  version "5.7.1"
-  resolved "https://registry.yarnpkg.com/got/-/got-5.7.1.tgz#5f81635a61e4a6589f180569ea4e381680a51f35"
-  dependencies:
-    create-error-class "^3.0.1"
-    duplexer2 "^0.1.4"
-    is-redirect "^1.0.0"
-    is-retry-allowed "^1.0.0"
-    is-stream "^1.0.0"
-    lowercase-keys "^1.0.0"
-    node-status-codes "^1.0.0"
-    object-assign "^4.0.1"
-    parse-json "^2.1.0"
-    pinkie-promise "^2.0.0"
-    read-all-stream "^3.0.0"
-    readable-stream "^2.0.5"
-    timed-out "^3.0.0"
-    unzip-response "^1.0.2"
-    url-parse-lax "^1.0.0"
-
 got@^6.7.1:
   version "6.7.1"
   resolved "https://registry.yarnpkg.com/got/-/got-6.7.1.tgz#240cd05785a9a18e561dc1b44b41c763ef1e8db0"
@@ -4533,7 +4676,7 @@ has-values@^1.0.0:
     is-number "^3.0.0"
     kind-of "^4.0.0"
 
-has@^1.0.0, has@^1.0.1:
+has@^1.0.0, has@^1.0.1, has@~1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/has/-/has-1.0.1.tgz#8461733f538b0837c9361e39a9ab9e9704dc2f28"
   dependencies:
@@ -4791,6 +4934,14 @@ ignore@^3.3.3:
   version "3.3.7"
   resolved "https://registry.yarnpkg.com/ignore/-/ignore-3.3.7.tgz#612289bfb3c220e186a58118618d5be8c1bab021"
 
+immediate@^3.2.3:
+  version "3.2.3"
+  resolved "https://registry.yarnpkg.com/immediate/-/immediate-3.2.3.tgz#d140fa8f614659bd6541233097ddaac25cdd991c"
+
+import-lazy@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/import-lazy/-/import-lazy-2.1.0.tgz#05698e3d45c88e8d7e9d92cb0584e77f096f3e43"
+
 import-local@^0.1.1:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/import-local/-/import-local-0.1.1.tgz#b1179572aacdc11c6a91009fb430dbcab5f668a8"
@@ -5079,6 +5230,10 @@ is-finite@^1.0.0, is-finite@^1.0.1:
   dependencies:
     number-is-nan "^1.0.0"
 
+is-fn@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/is-fn/-/is-fn-1.0.0.tgz#9543d5de7bcf5b08a22ec8a20bae6e286d510d8c"
+
 is-fullwidth-code-point@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/is-fullwidth-code-point/-/is-fullwidth-code-point-1.0.0.tgz#ef9e31386f031a7f0d643af82fde50c457ef00cb"
@@ -5089,6 +5244,10 @@ is-fullwidth-code-point@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/is-fullwidth-code-point/-/is-fullwidth-code-point-2.0.0.tgz#a3b30a5c4f199183167aaab93beefae3ddfb654f"
 
+is-function@^1.0.1, is-function@~1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/is-function/-/is-function-1.0.1.tgz#12cfb98b65b57dd3d193a3121f5f6e2f437602b5"
+
 is-generator-fn@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/is-generator-fn/-/is-generator-fn-1.0.0.tgz#969d49e1bb3329f6bb7f09089be26578b2ddd46a"
@@ -5111,10 +5270,21 @@ is-glob@^4.0.0:
   dependencies:
     is-extglob "^2.1.1"
 
+is-hex-prefixed@1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/is-hex-prefixed/-/is-hex-prefixed-1.0.0.tgz#7d8d37e6ad77e5d127148913c573e082d777f554"
+
 is-hexadecimal@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/is-hexadecimal/-/is-hexadecimal-1.0.1.tgz#6e084bbc92061fbb0971ec58b6ce6d404e24da69"
 
+is-installed-globally@^0.1.0:
+  version "0.1.0"
+  resolved "https://registry.yarnpkg.com/is-installed-globally/-/is-installed-globally-0.1.0.tgz#0dfd98f5a9111716dd535dda6492f67bf3d25a80"
+  dependencies:
+    global-dirs "^0.1.0"
+    is-path-inside "^1.0.0"
+
 is-negated-glob@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/is-negated-glob/-/is-negated-glob-1.0.0.tgz#6910bca5da8c95e784b5751b976cf5a10fee36d2"
@@ -5844,8 +6014,12 @@ jest@^22.1.3:
     jest-cli "^22.1.4"
 
 js-base64@^2.1.9:
-  version "2.4.2"
-  resolved "https://registry.yarnpkg.com/js-base64/-/js-base64-2.4.2.tgz#1896da010ef8862f385d8887648e9b6dc4a7a2e9"
+  version "2.4.3"
+  resolved "https://registry.yarnpkg.com/js-base64/-/js-base64-2.4.3.tgz#2e545ec2b0f2957f41356510205214e98fad6582"
+
+js-sha3@^0.3.1:
+  version "0.3.1"
+  resolved "https://registry.yarnpkg.com/js-sha3/-/js-sha3-0.3.1.tgz#86122802142f0828502a0d1dee1d95e253bb0243"
 
 js-tokens@^3.0.0, js-tokens@^3.0.2:
   version "3.0.2"
@@ -5870,8 +6044,8 @@ jsbn@~0.1.0:
   resolved "https://registry.yarnpkg.com/jsbn/-/jsbn-0.1.1.tgz#a5e654c2e5a2deb5f201d96cefbca80c0ef2f513"
 
 jsdom@^11.5.1:
-  version "11.6.0"
-  resolved "https://registry.yarnpkg.com/jsdom/-/jsdom-11.6.0.tgz#7334781595ee8bdeea9742fc33fab5cdad6d195f"
+  version "11.6.2"
+  resolved "https://registry.yarnpkg.com/jsdom/-/jsdom-11.6.2.tgz#25d1ef332d48adf77fc5221fe2619967923f16bb"
   dependencies:
     abab "^1.0.4"
     acorn "^5.3.0"
@@ -5886,7 +6060,7 @@ jsdom@^11.5.1:
     html-encoding-sniffer "^1.0.2"
     left-pad "^1.2.0"
     nwmatcher "^1.4.3"
-    parse5 "^4.0.0"
+    parse5 "4.0.0"
     pn "^1.1.0"
     request "^2.83.0"
     request-promise-native "^1.0.5"
@@ -5940,6 +6114,26 @@ json-parse-better-errors@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/json-parse-better-errors/-/json-parse-better-errors-1.0.1.tgz#50183cd1b2d25275de069e9e71b467ac9eab973a"
 
+json-rpc-engine@^3.6.0:
+  version "3.6.1"
+  resolved "https://registry.yarnpkg.com/json-rpc-engine/-/json-rpc-engine-3.6.1.tgz#f53084726dc6dedeead0e2c457eeb997135f1e25"
+  dependencies:
+    async "^2.0.1"
+    babel-preset-env "^1.3.2"
+    babelify "^7.3.0"
+    json-rpc-error "^2.0.0"
+    promise-to-callback "^1.0.0"
+
+json-rpc-error@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/json-rpc-error/-/json-rpc-error-2.0.0.tgz#a7af9c202838b5e905c7250e547f1aff77258a02"
+  dependencies:
+    inherits "^2.0.1"
+
+json-rpc-random-id@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/json-rpc-random-id/-/json-rpc-random-id-1.0.1.tgz#ba49d96aded1444dbb8da3d203748acbbcdec8c8"
+
 json-schema-traverse@^0.3.0:
   version "0.3.1"
   resolved "https://registry.yarnpkg.com/json-schema-traverse/-/json-schema-traverse-0.3.1.tgz#349a6d44c53a51de89b40805c5d5e59b417d3340"
@@ -6025,6 +6219,22 @@ kebab-case@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/kebab-case/-/kebab-case-1.0.0.tgz#3f9e4990adcad0c686c0e701f7645868f75f91eb"
 
+keccak@^1.0.2:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/keccak/-/keccak-1.4.0.tgz#572f8a6dbee8e7b3aa421550f9e6408ca2186f80"
+  dependencies:
+    bindings "^1.2.1"
+    inherits "^2.0.3"
+    nan "^2.2.1"
+    safe-buffer "^5.1.0"
+
+keccakjs@^0.2.0:
+  version "0.2.1"
+  resolved "https://registry.yarnpkg.com/keccakjs/-/keccakjs-0.2.1.tgz#1d633af907ef305bbf9f2fa616d56c44561dfa4d"
+  dependencies:
+    browserify-sha3 "^0.0.1"
+    sha3 "^1.1.0"
+
 kefir@^3.7.3:
   version "3.8.1"
   resolved "https://registry.yarnpkg.com/kefir/-/kefir-3.8.1.tgz#6b202bc78c01ed4aa1c329e885b43631bf62ec0c"
@@ -6069,11 +6279,11 @@ labeled-stream-splicer@^2.0.0:
     isarray "~0.0.1"
     stream-splicer "^2.0.0"
 
-latest-version@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/latest-version/-/latest-version-2.0.0.tgz#56f8d6139620847b8017f8f1f4d78e211324168b"
+latest-version@^3.0.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/latest-version/-/latest-version-3.1.0.tgz#a205383fea322b33b5ae3b18abee0dc2f356ee15"
   dependencies:
-    package-json "^2.0.0"
+    package-json "^4.0.0"
 
 lazy-cache@^1.0.3:
   version "1.0.4"
@@ -6085,10 +6295,6 @@ lazy-cache@^2.0.2:
   dependencies:
     set-getter "^0.1.0"
 
-lazy-req@^1.1.0:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/lazy-req/-/lazy-req-1.1.0.tgz#bdaebead30f8d824039ce0ce149d4daa07ba1fac"
-
 lazystream@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/lazystream/-/lazystream-1.0.0.tgz#f6995fe0f820392f61396be89462407bb77168e4"
@@ -6155,6 +6361,50 @@ lerna@2.8.0:
     write-pkg "^3.1.0"
     yargs "^8.0.2"
 
+level-codec@~7.0.0:
+  version "7.0.1"
+  resolved "https://registry.yarnpkg.com/level-codec/-/level-codec-7.0.1.tgz#341f22f907ce0f16763f24bddd681e395a0fb8a7"
+
+level-errors@^1.0.3:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/level-errors/-/level-errors-1.1.2.tgz#4399c2f3d3ab87d0625f7e3676e2d807deff404d"
+  dependencies:
+    errno "~0.1.1"
+
+level-errors@~1.0.3:
+  version "1.0.5"
+  resolved "https://registry.yarnpkg.com/level-errors/-/level-errors-1.0.5.tgz#83dbfb12f0b8a2516bdc9a31c4876038e227b859"
+  dependencies:
+    errno "~0.1.1"
+
+level-iterator-stream@~1.3.0:
+  version "1.3.1"
+  resolved "https://registry.yarnpkg.com/level-iterator-stream/-/level-iterator-stream-1.3.1.tgz#e43b78b1a8143e6fa97a4f485eb8ea530352f2ed"
+  dependencies:
+    inherits "^2.0.1"
+    level-errors "^1.0.3"
+    readable-stream "^1.0.33"
+    xtend "^4.0.0"
+
+level-ws@0.0.0:
+  version "0.0.0"
+  resolved "https://registry.yarnpkg.com/level-ws/-/level-ws-0.0.0.tgz#372e512177924a00424b0b43aef2bb42496d228b"
+  dependencies:
+    readable-stream "~1.0.15"
+    xtend "~2.1.1"
+
+levelup@^1.2.1:
+  version "1.3.9"
+  resolved "https://registry.yarnpkg.com/levelup/-/levelup-1.3.9.tgz#2dbcae845b2bb2b6bea84df334c475533bbd82ab"
+  dependencies:
+    deferred-leveldown "~1.2.1"
+    level-codec "~7.0.0"
+    level-errors "~1.0.3"
+    level-iterator-stream "~1.3.0"
+    prr "~1.0.1"
+    semver "~5.4.1"
+    xtend "~4.0.0"
+
 leven@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/leven/-/leven-2.1.0.tgz#c2e7a9f772094dee9d34202ae8acce4687875580"
@@ -6351,6 +6601,10 @@ lru-cache@^4.0.1:
     pseudomap "^1.0.2"
     yallist "^2.1.2"
 
+ltgt@~2.2.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/ltgt/-/ltgt-2.2.0.tgz#b65ba5fcb349a29924c8e333f7c6a5562f2e4842"
+
 macaddress@^0.2.8:
   version "0.2.8"
   resolved "https://registry.yarnpkg.com/macaddress/-/macaddress-0.2.8.tgz#5904dc537c39ec6dbefeae902327135fa8511f12"
@@ -6493,6 +6747,17 @@ mem@^1.1.0:
   dependencies:
     mimic-fn "^1.0.0"
 
+memdown@^1.0.0:
+  version "1.4.1"
+  resolved "https://registry.yarnpkg.com/memdown/-/memdown-1.4.1.tgz#b4e4e192174664ffbae41361aa500f3119efe215"
+  dependencies:
+    abstract-leveldown "~2.7.1"
+    functional-red-black-tree "^1.0.1"
+    immediate "^3.2.3"
+    inherits "~2.0.1"
+    ltgt "~2.2.0"
+    safe-buffer "~5.1.1"
+
 memory-fs@^0.4.0, memory-fs@~0.4.1:
   version "0.4.1"
   resolved "https://registry.yarnpkg.com/memory-fs/-/memory-fs-0.4.1.tgz#3a9a20b8462523e447cfbc7e8bb80ed667bfc552"
@@ -6500,6 +6765,10 @@ memory-fs@^0.4.0, memory-fs@~0.4.1:
     errno "^0.1.3"
     readable-stream "^2.0.1"
 
+memorystream@^0.3.1:
+  version "0.3.1"
+  resolved "https://registry.yarnpkg.com/memorystream/-/memorystream-0.3.1.tgz#86d7090b30ce455d63fbae12dda51a47ddcaf9b2"
+
 meow@^3.3.0, meow@^3.7.0:
   version "3.7.0"
   resolved "https://registry.yarnpkg.com/meow/-/meow-3.7.0.tgz#72cb668b425228290abbfa856892587308a801fb"
@@ -6529,6 +6798,19 @@ merge@^1.1.3:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/merge/-/merge-1.2.0.tgz#7531e39d4949c281a66b8c5a6e0265e8b05894da"
 
+merkle-patricia-tree@^2.1.2:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/merkle-patricia-tree/-/merkle-patricia-tree-2.3.0.tgz#84c606232ef343f1b96fc972e697708754f08573"
+  dependencies:
+    async "^1.4.2"
+    ethereumjs-util "^5.0.0"
+    level-ws "0.0.0"
+    levelup "^1.2.1"
+    memdown "^1.0.0"
+    readable-stream "^2.0.0"
+    rlp "^2.0.0"
+    semaphore ">=1.0.1"
+
 methods@~1.1.2:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/methods/-/methods-1.1.2.tgz#5529a4d67654134edcc5266656835b0f851afcee"
@@ -6599,13 +6881,19 @@ mime@^1.2.11, mime@^1.4.1, mime@^1.5.0:
   resolved "https://registry.yarnpkg.com/mime/-/mime-1.6.0.tgz#32cd9e5c64553bd58d19a568af452acff04981b1"
 
 mimic-fn@^1.0.0:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/mimic-fn/-/mimic-fn-1.1.0.tgz#e667783d92e89dbd342818b5230b9d62a672ad18"
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/mimic-fn/-/mimic-fn-1.2.0.tgz#820c86a39334640e99516928bd03fca88057d022"
 
 mimic-response@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/mimic-response/-/mimic-response-1.0.0.tgz#df3d3652a73fded6b9b0b24146e6fd052353458e"
 
+min-document@^2.19.0:
+  version "2.19.0"
+  resolved "https://registry.yarnpkg.com/min-document/-/min-document-2.19.0.tgz#7bd282e3f5842ed295bb748cdd9f1ffa2c824685"
+  dependencies:
+    dom-walk "^0.1.0"
+
 minimalistic-assert@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/minimalistic-assert/-/minimalistic-assert-1.0.0.tgz#702be2dda6b37f4836bcb3f5db56641b64a1d3d3"
@@ -6634,7 +6922,7 @@ minimist@^0.1.0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/minimist/-/minimist-0.1.0.tgz#99df657a52574c21c9057497df742790b2b4c0de"
 
-minimist@^1.1.0, minimist@^1.1.1, minimist@^1.1.3, minimist@^1.2.0:
+minimist@^1.1.0, minimist@^1.1.1, minimist@^1.1.3, minimist@^1.2.0, minimist@~1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/minimist/-/minimist-1.2.0.tgz#a35008b20f41383eec1fb914f4cd5df79a264284"
 
@@ -6678,26 +6966,6 @@ module-deps-sortable@4.0.6:
     through2 "^2.0.0"
     xtend "^4.0.0"
 
-module-deps@^4.0.8:
-  version "4.1.1"
-  resolved "https://registry.yarnpkg.com/module-deps/-/module-deps-4.1.1.tgz#23215833f1da13fd606ccb8087b44852dcb821fd"
-  dependencies:
-    JSONStream "^1.0.3"
-    browser-resolve "^1.7.0"
-    cached-path-relative "^1.0.0"
-    concat-stream "~1.5.0"
-    defined "^1.0.0"
-    detective "^4.0.0"
-    duplexer2 "^0.1.2"
-    inherits "^2.0.1"
-    parents "^1.0.0"
-    readable-stream "^2.0.2"
-    resolve "^1.1.3"
-    stream-combiner2 "^1.1.1"
-    subarg "^1.0.0"
-    through2 "^2.0.0"
-    xtend "^4.0.0"
-
 module-deps@^5.0.1:
   version "5.0.1"
   resolved "https://registry.yarnpkg.com/module-deps/-/module-deps-5.0.1.tgz#3bc47c14b0a6d925aff2ec4a177b456a96ae0396"
@@ -6731,17 +6999,17 @@ multicast-dns-service-types@^1.1.0:
   resolved "https://registry.yarnpkg.com/multicast-dns-service-types/-/multicast-dns-service-types-1.1.0.tgz#899f11d9686e5e05cb91b35d5f0e63b773cfc901"
 
 multicast-dns@^6.0.1:
-  version "6.2.2"
-  resolved "https://registry.yarnpkg.com/multicast-dns/-/multicast-dns-6.2.2.tgz#300b6133361f8aaaf2b8d1248e85c363fe5b95a0"
+  version "6.2.3"
+  resolved "https://registry.yarnpkg.com/multicast-dns/-/multicast-dns-6.2.3.tgz#a0ec7bd9055c4282f790c3c82f4e28db3b31b229"
   dependencies:
-    dns-packet "^1.0.1"
-    thunky "^0.1.0"
+    dns-packet "^1.3.1"
+    thunky "^1.0.2"
 
 mute-stream@0.0.7:
   version "0.0.7"
   resolved "https://registry.yarnpkg.com/mute-stream/-/mute-stream-0.0.7.tgz#3075ce93bc21b8fab43e1bc4da7e8115ed1e7bab"
 
-nan@^2.3.0, nan@^2.6.2:
+nan@^2.0.5, nan@^2.2.1, nan@^2.3.0, nan@^2.6.2:
   version "2.8.0"
   resolved "https://registry.yarnpkg.com/nan/-/nan-2.8.0.tgz#ed715f3fe9de02b57a5e6252d90a96675e1f085a"
 
@@ -6786,21 +7054,21 @@ no-case@^2.2.0:
     lower-case "^1.1.1"
 
 node-abi@^2.1.1:
-  version "2.1.2"
-  resolved "https://registry.yarnpkg.com/node-abi/-/node-abi-2.1.2.tgz#4da6caceb6685fcd31e7dd1994ef6bb7d0a9c0b2"
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/node-abi/-/node-abi-2.2.0.tgz#e802ac7a2408e2c0593fb3176ffdf8a99a9b4dec"
   dependencies:
     semver "^5.4.1"
 
-node-fetch@^1.0.1:
+node-fetch@^1.0.1, node-fetch@~1.7.1:
   version "1.7.3"
   resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-1.7.3.tgz#980f6f72d85211a5347c6b2bc18c5b84c3eb47ef"
   dependencies:
     encoding "^0.1.11"
     is-stream "^1.0.1"
 
-node-forge@0.6.33:
-  version "0.6.33"
-  resolved "https://registry.yarnpkg.com/node-forge/-/node-forge-0.6.33.tgz#463811879f573d45155ad6a9f43dc296e8e85ebc"
+node-forge@0.7.1:
+  version "0.7.1"
+  resolved "https://registry.yarnpkg.com/node-forge/-/node-forge-0.7.1.tgz#9da611ea08982f4b94206b3beb4cc9665f20c300"
 
 node-hid@^0.7.2:
   version "0.7.2"
@@ -6867,10 +7135,6 @@ node-pre-gyp@^0.6.36, node-pre-gyp@^0.6.39:
     tar "^2.2.1"
     tar-pack "^3.4.0"
 
-node-status-codes@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/node-status-codes/-/node-status-codes-1.0.0.tgz#5ae5541d024645d32a58fcddc9ceecea7ae3ac2f"
-
 noop-logger@^0.1.1:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/noop-logger/-/noop-logger-0.1.1.tgz#94a2b1633c4f1317553007d8966fd0e841b6a4c2"
@@ -6957,7 +7221,7 @@ oauth-sign@~0.8.1, oauth-sign@~0.8.2:
   version "0.8.2"
   resolved "https://registry.yarnpkg.com/oauth-sign/-/oauth-sign-0.8.2.tgz#46a6ab7f0aead8deae9ec0565780b7d4efeb9d43"
 
-object-assign@4.1.1, object-assign@^4, object-assign@^4.0.1, object-assign@^4.1.0, object-assign@^4.1.1:
+object-assign@4.1.1, object-assign@^4, object-assign@^4.0.0, object-assign@^4.0.1, object-assign@^4.1.0, object-assign@^4.1.1:
   version "4.1.1"
   resolved "https://registry.yarnpkg.com/object-assign/-/object-assign-4.1.1.tgz#2109adc7965887cfc05cbbd442cac8bfbb360863"
 
@@ -6973,10 +7237,18 @@ object-hash@^1.1.4:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/object-hash/-/object-hash-1.2.0.tgz#e96af0e96981996a1d47f88ead8f74f1ebc4422b"
 
+object-inspect@~1.3.0:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/object-inspect/-/object-inspect-1.3.0.tgz#5b1eb8e6742e2ee83342a637034d844928ba2f6d"
+
 object-keys@^1.0.11, object-keys@^1.0.8:
   version "1.0.11"
   resolved "https://registry.yarnpkg.com/object-keys/-/object-keys-1.0.11.tgz#c54601778ad560f1142ce0e01bcca8b56d13426d"
 
+object-keys@~0.4.0:
+  version "0.4.0"
+  resolved "https://registry.yarnpkg.com/object-keys/-/object-keys-0.4.0.tgz#28a6aae7428dd2c3a92f3d95f21335dd204e0336"
+
 object-visit@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/object-visit/-/object-visit-1.0.1.tgz#f79c4493af0c5377b59fe39d395e41042dd045bb"
@@ -7116,7 +7388,7 @@ os-tmpdir@^1.0.0, os-tmpdir@^1.0.1, os-tmpdir@~1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/os-tmpdir/-/os-tmpdir-1.0.2.tgz#bbe67406c79aa85c5cfec766fe5734555dfa1274"
 
-osenv@^0.1.0, osenv@^0.1.4:
+osenv@^0.1.4:
   version "0.1.4"
   resolved "https://registry.yarnpkg.com/osenv/-/osenv-0.1.4.tgz#42fe6d5953df06c8064be6f176c3d05aaaa34644"
   dependencies:
@@ -7175,16 +7447,7 @@ p-try@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/p-try/-/p-try-1.0.0.tgz#cbc79cdbaf8fd4228e13f621f2b1a237c1b207b3"
 
-package-json@^2.0.0:
-  version "2.4.0"
-  resolved "https://registry.yarnpkg.com/package-json/-/package-json-2.4.0.tgz#0d15bd67d1cbbddbb2ca222ff2edb86bcb31a8bb"
-  dependencies:
-    got "^5.0.0"
-    registry-auth-token "^3.0.1"
-    registry-url "^3.0.3"
-    semver "^5.1.0"
-
-package-json@^4.0.1:
+package-json@^4.0.0, package-json@^4.0.1:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/package-json/-/package-json-4.0.1.tgz#8869a0401253661c4c4ca3da6c2121ed555f5eed"
   dependencies:
@@ -7269,7 +7532,14 @@ parse-glob@^3.0.4:
     is-extglob "^1.0.0"
     is-glob "^2.0.0"
 
-parse-json@^2.1.0, parse-json@^2.2.0:
+parse-headers@^2.0.0:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/parse-headers/-/parse-headers-2.0.1.tgz#6ae83a7aa25a9d9b700acc28698cd1f1ed7e9536"
+  dependencies:
+    for-each "^0.3.2"
+    trim "0.0.1"
+
+parse-json@^2.2.0:
   version "2.2.0"
   resolved "https://registry.yarnpkg.com/parse-json/-/parse-json-2.2.0.tgz#f480f40434ef80741f8469099f8dea18f55a4dc9"
   dependencies:
@@ -7297,14 +7567,14 @@ parse-url@^1.3.0:
     is-ssh "^1.3.0"
     protocols "^1.4.0"
 
+parse5@4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/parse5/-/parse5-4.0.0.tgz#6d78656e3da8d78b4ec0b906f7c08ef1dfe3f608"
+
 parse5@^1.5.1:
   version "1.5.1"
   resolved "https://registry.yarnpkg.com/parse5/-/parse5-1.5.1.tgz#9b7f3b0de32be78dc2401b17573ccaf0f6f59d94"
 
-parse5@^4.0.0:
-  version "4.0.0"
-  resolved "https://registry.yarnpkg.com/parse5/-/parse5-4.0.0.tgz#6d78656e3da8d78b4ec0b906f7c08ef1dfe3f608"
-
 parseurl@~1.3.2:
   version "1.3.2"
   resolved "https://registry.yarnpkg.com/parseurl/-/parseurl-1.3.2.tgz#fc289d4ed8993119460c156253262cdc8de65bf3"
@@ -7749,8 +8019,8 @@ postcss@^5.0.10, postcss@^5.0.11, postcss@^5.0.12, postcss@^5.0.13, postcss@^5.0
     supports-color "^3.2.3"
 
 postcss@^6.0.0, postcss@^6.0.1, postcss@^6.0.13:
-  version "6.0.16"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-6.0.16.tgz#112e2fe2a6d2109be0957687243170ea5589e146"
+  version "6.0.17"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-6.0.17.tgz#e259a051ca513f81e9afd0c21f7f82eda50c65c5"
   dependencies:
     chalk "^2.3.0"
     source-map "^0.6.1"
@@ -7841,10 +8111,21 @@ process@^0.11.10, process@~0.11.0:
   version "0.11.10"
   resolved "https://registry.yarnpkg.com/process/-/process-0.11.10.tgz#7332300e840161bda3e69a1d1d91a7d4bc16f182"
 
+process@~0.5.1:
+  version "0.5.2"
+  resolved "https://registry.yarnpkg.com/process/-/process-0.5.2.tgz#1638d8a8e34c2f440a91db95ab9aeb677fc185cf"
+
 progress@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/progress/-/progress-2.0.0.tgz#8a1be366bf8fc23db2bd23f10c6fe920b4389d1f"
 
+promise-to-callback@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/promise-to-callback/-/promise-to-callback-1.0.0.tgz#5d2a749010bfb67d963598fcd3960746a68feef7"
+  dependencies:
+    is-fn "^1.0.0"
+    set-immediate-shim "^1.0.1"
+
 promise@8.0.1:
   version "8.0.1"
   resolved "https://registry.yarnpkg.com/promise/-/promise-8.0.1.tgz#e45d68b00a17647b6da711bf85ed6ed47208f450"
@@ -8031,8 +8312,8 @@ raw-body@~1.1.0:
     string_decoder "0.10"
 
 rc@^1.0.1, rc@^1.1.6, rc@^1.1.7:
-  version "1.2.4"
-  resolved "https://registry.yarnpkg.com/rc/-/rc-1.2.4.tgz#a0f606caae2a3b862bbd0ef85482c0125b315fa3"
+  version "1.2.5"
+  resolved "https://registry.yarnpkg.com/rc/-/rc-1.2.5.tgz#275cd687f6e3b36cc756baa26dfee80a790301fd"
   dependencies:
     deep-extend "~0.4.0"
     ini "~1.3.0"
@@ -8147,13 +8428,6 @@ react@^16.0.0, react@^16.2.0:
     object-assign "^4.1.1"
     prop-types "^15.6.0"
 
-read-all-stream@^3.0.0:
-  version "3.1.0"
-  resolved "https://registry.yarnpkg.com/read-all-stream/-/read-all-stream-3.1.0.tgz#35c3e177f2078ef789ee4bfafa4373074eaef4fa"
-  dependencies:
-    pinkie-promise "^2.0.0"
-    readable-stream "^2.0.0"
-
 read-cmd-shim@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/read-cmd-shim/-/read-cmd-shim-1.0.1.tgz#2d5d157786a37c055d22077c32c53f8329e91c7b"
@@ -8211,7 +8485,7 @@ read-pkg@^3.0.0:
     normalize-package-data "^2.3.2"
     path-type "^3.0.0"
 
-readable-stream@1.0, "readable-stream@>=1.0.33-1 <1.1.0-0", readable-stream@~1.0.0, readable-stream@~1.0.31:
+readable-stream@1.0, "readable-stream@>=1.0.33-1 <1.1.0-0", readable-stream@~1.0.0, readable-stream@~1.0.15, readable-stream@~1.0.31:
   version "1.0.34"
   resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-1.0.34.tgz#125820e34bc842d2f2aaafafe4c2916ee32c157c"
   dependencies:
@@ -8220,6 +8494,15 @@ readable-stream@1.0, "readable-stream@>=1.0.33-1 <1.1.0-0", readable-stream@~1.0
     isarray "0.0.1"
     string_decoder "~0.10.x"
 
+readable-stream@^1.0.33:
+  version "1.1.14"
+  resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-1.1.14.tgz#7cf4c54ef648e3813084c636dd2079e166c081d9"
+  dependencies:
+    core-util-is "~1.0.0"
+    inherits "~2.0.1"
+    isarray "0.0.1"
+    string_decoder "~0.10.x"
+
 readable-stream@^2.0.0, readable-stream@^2.0.1, readable-stream@^2.0.2, readable-stream@^2.0.4, readable-stream@^2.0.5, readable-stream@^2.0.6, readable-stream@^2.1.4, readable-stream@^2.1.5, readable-stream@^2.2.2, readable-stream@^2.2.9, readable-stream@^2.3.3:
   version "2.3.3"
   resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-2.3.3.tgz#368f2512d79f9d46fdfc71349ae7878bbc1eb95c"
@@ -8365,8 +8648,8 @@ regexpu-core@^2.0.0:
     regjsparser "^0.1.4"
 
 registry-auth-token@^3.0.1:
-  version "3.3.1"
-  resolved "https://registry.yarnpkg.com/registry-auth-token/-/registry-auth-token-3.3.1.tgz#fb0d3289ee0d9ada2cbb52af5dfe66cb070d3006"
+  version "3.3.2"
+  resolved "https://registry.yarnpkg.com/registry-auth-token/-/registry-auth-token-3.3.2.tgz#851fd49038eecb586911115af845260eec983f20"
   dependencies:
     rc "^1.1.6"
     safe-buffer "^5.0.1"
@@ -8562,7 +8845,7 @@ request@2.81.0:
     tunnel-agent "^0.6.0"
     uuid "^3.0.0"
 
-request@^2.79.0, request@^2.83.0:
+request@^2.67.0, request@^2.79.0, request@^2.83.0:
   version "2.83.0"
   resolved "https://registry.yarnpkg.com/request/-/request-2.83.0.tgz#ca0b65da02ed62935887808e6f510381034e3356"
   dependencies:
@@ -8653,6 +8936,12 @@ resolve@^1.1.3, resolve@^1.1.4, resolve@^1.1.6, resolve@^1.3.2, resolve@^1.5.0:
   dependencies:
     path-parse "^1.0.5"
 
+resolve@~1.4.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/resolve/-/resolve-1.4.0.tgz#a75be01c53da25d934a98ebd0e4c4a7312f92a86"
+  dependencies:
+    path-parse "^1.0.5"
+
 resp-modifier@^6.0.0:
   version "6.0.2"
   resolved "https://registry.yarnpkg.com/resp-modifier/-/resp-modifier-6.0.2.tgz#b124de5c4fbafcba541f48ffa73970f4aa456b4f"
@@ -8667,6 +8956,12 @@ restore-cursor@^2.0.0:
     onetime "^2.0.0"
     signal-exit "^3.0.2"
 
+resumer@~0.0.0:
+  version "0.0.0"
+  resolved "https://registry.yarnpkg.com/resumer/-/resumer-0.0.0.tgz#f1e8f461e4064ba39e82af3cdc2a8c893d076759"
+  dependencies:
+    through "~2.3.4"
+
 right-align@^0.1.1:
   version "0.1.3"
   resolved "https://registry.yarnpkg.com/right-align/-/right-align-0.1.3.tgz#61339b722fe6a3515689210d24e14c96148613ef"
@@ -8690,12 +8985,20 @@ ripemd160@^2.0.0, ripemd160@^2.0.1:
     hash-base "^2.0.0"
     inherits "^2.0.1"
 
+rlp@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/rlp/-/rlp-2.0.0.tgz#9db384ff4b89a8f61563d92395d8625b18f3afb0"
+
 run-async@^2.2.0:
   version "2.3.0"
   resolved "https://registry.yarnpkg.com/run-async/-/run-async-2.3.0.tgz#0371ab4ae0bdd720d4166d7dfda64ff7a445a6c0"
   dependencies:
     is-promise "^2.1.0"
 
+rustbn.js@~0.1.1:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/rustbn.js/-/rustbn.js-0.1.1.tgz#088b8c29d5f6d7d9f56ffb545f5d110e4a6801eb"
+
 rx-lite-aggregates@^4.0.8:
   version "4.0.8"
   resolved "https://registry.yarnpkg.com/rx-lite-aggregates/-/rx-lite-aggregates-4.0.8.tgz#753b87a89a11c95467c4ac1626c4efc4e05c67be"
@@ -8750,15 +9053,32 @@ schema-utils@^0.3.0:
   dependencies:
     ajv "^5.0.0"
 
+secp256k1@^3.0.1:
+  version "3.5.0"
+  resolved "https://registry.yarnpkg.com/secp256k1/-/secp256k1-3.5.0.tgz#677d3b8a8e04e1a5fa381a1ae437c54207b738d0"
+  dependencies:
+    bindings "^1.2.1"
+    bip66 "^1.1.3"
+    bn.js "^4.11.3"
+    create-hash "^1.1.2"
+    drbg.js "^1.0.1"
+    elliptic "^6.2.3"
+    nan "^2.2.1"
+    safe-buffer "^5.1.0"
+
 select-hose@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/select-hose/-/select-hose-2.0.0.tgz#625d8658f865af43ec962bfc376a37359a4994ca"
 
 selfsigned@^1.9.1:
-  version "1.10.1"
-  resolved "https://registry.yarnpkg.com/selfsigned/-/selfsigned-1.10.1.tgz#bf8cb7b83256c4551e31347c6311778db99eec52"
+  version "1.10.2"
+  resolved "https://registry.yarnpkg.com/selfsigned/-/selfsigned-1.10.2.tgz#b4449580d99929b65b10a48389301a6592088758"
   dependencies:
-    node-forge "0.6.33"
+    node-forge "0.7.1"
+
+semaphore@>=1.0.1, semaphore@^1.0.3:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/semaphore/-/semaphore-1.1.0.tgz#aaad8b86b20fe8e9b32b16dc2ee682a8cd26a8aa"
 
 semver-diff@^2.0.0:
   version "2.1.0"
@@ -8770,6 +9090,10 @@ semver-diff@^2.0.0:
   version "5.5.0"
   resolved "https://registry.yarnpkg.com/semver/-/semver-5.5.0.tgz#dc4bbc7a6ca9d916dee5d43516f0092b58f7b8ab"
 
+semver@~5.4.1:
+  version "5.4.1"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-5.4.1.tgz#e059c09d8571f0540823733433505d3a2f00b18e"
+
 send@0.16.1:
   version "0.16.1"
   resolved "https://registry.yarnpkg.com/send/-/send-0.16.1.tgz#a70e1ca21d1382c11d0d9f6231deb281080d7ab3"
@@ -8864,6 +9188,12 @@ sha.js@^2.4.0, sha.js@^2.4.8, sha.js@~2.4.4:
     inherits "^2.0.1"
     safe-buffer "^5.0.1"
 
+sha3@^1.1.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/sha3/-/sha3-1.2.0.tgz#6989f1b70a498705876a373e2c62ace96aa9399a"
+  dependencies:
+    nan "^2.0.5"
+
 shasum@^1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/shasum/-/shasum-1.0.2.tgz#e7012310d8f417f4deb5712150e5678b87ae565f"
@@ -8936,10 +9266,6 @@ slice-ansi@1.0.0:
   dependencies:
     readable-stream "~1.0.31"
 
-slide@^1.1.5:
-  version "1.1.6"
-  resolved "https://registry.yarnpkg.com/slide/-/slide-1.1.6.tgz#56eb027d65b4d2dce6cb2e2d32c4d4afc9e1d707"
-
 snapdragon-node@^2.0.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/snapdragon-node/-/snapdragon-node-2.1.1.tgz#6c175f86ff14bdb0724563e8f3c1b021a286853b"
@@ -8997,6 +9323,16 @@ sockjs@0.3.18:
     faye-websocket "^0.10.0"
     uuid "^2.0.2"
 
+solc@^0.4.2:
+  version "0.4.19"
+  resolved "https://registry.yarnpkg.com/solc/-/solc-0.4.19.tgz#1af1c4c292a0365a6977d4cbe3fbee7139b4b561"
+  dependencies:
+    fs-extra "^0.30.0"
+    memorystream "^0.3.1"
+    require-from-string "^1.1.0"
+    semver "^5.3.0"
+    yargs "^4.7.1"
+
 sort-keys@^1.0.0:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/sort-keys/-/sort-keys-1.1.2.tgz#441b6d4d346798f1b4e49e8920adfba0e543f9ad"
@@ -9030,8 +9366,8 @@ source-map-support@^0.4.15:
     source-map "^0.5.6"
 
 source-map-support@^0.5.0:
-  version "0.5.2"
-  resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.2.tgz#1a6297fd5b2e762b39688c7fc91233b60984f0a5"
+  version "0.5.3"
+  resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.3.tgz#2b3d5fff298cfa4d1afd7d4352d569e9a0158e76"
   dependencies:
     source-map "^0.6.0"
 
@@ -9252,6 +9588,14 @@ string-width@^2.0.0, string-width@^2.1.0, string-width@^2.1.1:
     is-fullwidth-code-point "^2.0.0"
     strip-ansi "^4.0.0"
 
+string.prototype.trim@~1.1.2:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/string.prototype.trim/-/string.prototype.trim-1.1.2.tgz#d04de2c89e137f4d7d206f086b5ed2fae6be8cea"
+  dependencies:
+    define-properties "^1.1.2"
+    es-abstract "^1.5.0"
+    function-bind "^1.0.2"
+
 string_decoder@0.10, string_decoder@~0.10.x:
   version "0.10.31"
   resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-0.10.31.tgz#62e203bc41766c6c28c9fc84301dab1c5310fa94"
@@ -9307,6 +9651,12 @@ strip-eof@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/strip-eof/-/strip-eof-1.0.0.tgz#bb43ff5598a6eb05d89b59fcd129c983313606bf"
 
+strip-hex-prefix@1.0.0, strip-hex-prefix@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/strip-hex-prefix/-/strip-hex-prefix-1.0.0.tgz#0c5f155fef1151373377de9dbb588da05500e36f"
+  dependencies:
+    is-hex-prefixed "1.0.0"
+
 strip-indent@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/strip-indent/-/strip-indent-1.0.1.tgz#0c7962a6adefa7bbd4ac366460a638552ae1a0a2"
@@ -9391,8 +9741,8 @@ sw-precache-webpack-plugin@0.11.4:
     uglify-js "^3.0.13"
 
 sw-precache@^5.1.1:
-  version "5.2.0"
-  resolved "https://registry.yarnpkg.com/sw-precache/-/sw-precache-5.2.0.tgz#eb6225ce580ceaae148194578a0ad01ab7ea199c"
+  version "5.2.1"
+  resolved "https://registry.yarnpkg.com/sw-precache/-/sw-precache-5.2.1.tgz#06134f319eec68f3b9583ce9a7036b1c119f7179"
   dependencies:
     dom-urls "^1.1.0"
     es6-promise "^4.0.5"
@@ -9403,7 +9753,7 @@ sw-precache@^5.1.1:
     mkdirp "^0.5.1"
     pretty-bytes "^4.0.2"
     sw-toolbox "^3.4.0"
-    update-notifier "^1.0.3"
+    update-notifier "^2.3.0"
 
 sw-toolbox@^3.4.0:
   version "3.6.0"
@@ -9417,8 +9767,8 @@ symbol-observable@1.0.4:
   resolved "https://registry.yarnpkg.com/symbol-observable/-/symbol-observable-1.0.4.tgz#29bf615d4aa7121bdd898b22d4b3f9bc4e2aa03d"
 
 symbol-observable@^1.0.3:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/symbol-observable/-/symbol-observable-1.1.0.tgz#5c68fd8d54115d9dfb72a84720549222e8db9b32"
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/symbol-observable/-/symbol-observable-1.2.0.tgz#c22688aed4eab3cdc2dfeacbb561660560a00804"
 
 symbol-tree@^3.2.1, symbol-tree@^3.2.2:
   version "3.2.2"
@@ -9445,6 +9795,24 @@ tapable@^0.2.7:
   version "0.2.8"
   resolved "https://registry.yarnpkg.com/tapable/-/tapable-0.2.8.tgz#99372a5c999bf2df160afc0d74bed4f47948cd22"
 
+tape@^4.4.0, tape@^4.6.3:
+  version "4.8.0"
+  resolved "https://registry.yarnpkg.com/tape/-/tape-4.8.0.tgz#f6a9fec41cc50a1de50fa33603ab580991f6068e"
+  dependencies:
+    deep-equal "~1.0.1"
+    defined "~1.0.0"
+    for-each "~0.3.2"
+    function-bind "~1.1.0"
+    glob "~7.1.2"
+    has "~1.0.1"
+    inherits "~2.0.3"
+    minimist "~1.2.0"
+    object-inspect "~1.3.0"
+    resolve "~1.4.0"
+    resumer "~0.0.0"
+    string.prototype.trim "~1.1.2"
+    through "~2.3.8"
+
 tar-fs@^1.13.0:
   version "1.16.0"
   resolved "https://registry.yarnpkg.com/tar-fs/-/tar-fs-1.16.0.tgz#e877a25acbcc51d8c790da1c57c9cf439817b896"
@@ -9513,6 +9881,12 @@ term-color@^1.0.1:
     ansi-styles "2.0.1"
     supports-color "1.3.1"
 
+term-size@^1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/term-size/-/term-size-1.2.0.tgz#458b83887f288fc56d6fffbfad262e26638efa69"
+  dependencies:
+    execa "^0.7.0"
+
 test-exclude@^4.1.1:
   version "4.1.1"
   resolved "https://registry.yarnpkg.com/test-exclude/-/test-exclude-4.1.1.tgz#4d84964b0966b0087ecc334a2ce002d3d9341e26"
@@ -9560,22 +9934,18 @@ through2@~0.6.1:
     readable-stream ">=1.0.33-1 <1.1.0-0"
     xtend ">=4.0.0 <4.1.0-0"
 
-through@2, "through@>=2.2.7 <3", through@^2.3.4, through@^2.3.6, through@^2.3.8:
+through@2, "through@>=2.2.7 <3", through@^2.3.4, through@^2.3.6, through@^2.3.8, through@~2.3.4, through@~2.3.8:
   version "2.3.8"
   resolved "https://registry.yarnpkg.com/through/-/through-2.3.8.tgz#0dd4c9ffaabc357960b1b724115d7e0e86a2e1f5"
 
-thunky@^0.1.0:
-  version "0.1.0"
-  resolved "https://registry.yarnpkg.com/thunky/-/thunky-0.1.0.tgz#bf30146824e2b6e67b0f2d7a4ac8beb26908684e"
+thunky@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/thunky/-/thunky-1.0.2.tgz#a862e018e3fb1ea2ec3fce5d55605cf57f247371"
 
 time-stamp@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/time-stamp/-/time-stamp-2.0.0.tgz#95c6a44530e15ba8d6f4a3ecb8c3a3fac46da357"
 
-timed-out@^3.0.0:
-  version "3.1.3"
-  resolved "https://registry.yarnpkg.com/timed-out/-/timed-out-3.1.3.tgz#95860bfcc5c76c277f8f8326fd0f5b2e20eba217"
-
 timed-out@^4.0.0:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/timed-out/-/timed-out-4.0.1.tgz#f32eacac5a175bea25d7fab565ab3ed8741ef56f"
@@ -9587,8 +9957,8 @@ timers-browserify@^1.0.1:
     process "~0.11.0"
 
 timers-browserify@^2.0.4:
-  version "2.0.4"
-  resolved "https://registry.yarnpkg.com/timers-browserify/-/timers-browserify-2.0.4.tgz#96ca53f4b794a5e7c0e1bd7cc88a372298fa01e6"
+  version "2.0.6"
+  resolved "https://registry.yarnpkg.com/timers-browserify/-/timers-browserify-2.0.6.tgz#241e76927d9ca05f4d959819022f5b3664b64bae"
   dependencies:
     setimmediate "^1.0.4"
 
@@ -9711,10 +10081,14 @@ trough@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/trough/-/trough-1.0.1.tgz#a9fd8b0394b0ae8fff82e0633a0a36ccad5b5f86"
 
-tty-browserify@0.0.0, tty-browserify@~0.0.0:
+tty-browserify@0.0.0:
   version "0.0.0"
   resolved "https://registry.yarnpkg.com/tty-browserify/-/tty-browserify-0.0.0.tgz#a157ba402da24e9bf957f9aa69d524eed42901a6"
 
+tty-browserify@~0.0.0:
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/tty-browserify/-/tty-browserify-0.0.1.tgz#3f05251ee17904dfd0677546670db9651682b811"
+
 tunnel-agent@^0.6.0:
   version "0.6.0"
   resolved "https://registry.yarnpkg.com/tunnel-agent/-/tunnel-agent-0.6.0.tgz#27a5dea06b36b04a0a9966774b290868f0fc40fd"
@@ -9750,9 +10124,9 @@ ua-parser-js@^0.7.9:
   version "0.7.17"
   resolved "https://registry.yarnpkg.com/ua-parser-js/-/ua-parser-js-0.7.17.tgz#e9ec5f9498b9ec910e7ae3ac626a805c4d09ecac"
 
-uglify-js@3.3.x, uglify-js@^3.0.13:
-  version "3.3.8"
-  resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-3.3.8.tgz#51e9a5db73afb53ac98603d08224edcd0be45fd8"
+uglify-js@3.3.x, uglify-js@^3.0.13, uglify-js@^3.3.9:
+  version "3.3.9"
+  resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-3.3.9.tgz#33869666c8ab7f7658ce3d22f0f1ced40097d33a"
   dependencies:
     commander "~2.13.0"
     source-map "~0.6.1"
@@ -9766,13 +10140,6 @@ uglify-js@^2.6, uglify-js@^2.8.29:
   optionalDependencies:
     uglify-to-browserify "~1.0.0"
 
-uglify-js@^3.3.9:
-  version "3.3.9"
-  resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-3.3.9.tgz#33869666c8ab7f7658ce3d22f0f1ced40097d33a"
-  dependencies:
-    commander "~2.13.0"
-    source-map "~0.6.1"
-
 uglify-to-browserify@~1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/uglify-to-browserify/-/uglify-to-browserify-1.0.2.tgz#6e0924d6bda6b5afe349e39a6d632850a0f882b7"
@@ -9854,6 +10221,12 @@ unique-stream@^2.0.2:
     json-stable-stringify "^1.0.0"
     through2-filter "^2.0.0"
 
+unique-string@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/unique-string/-/unique-string-1.0.0.tgz#9e1057cca851abb93398f8b33ae187b99caec11a"
+  dependencies:
+    crypto-random-string "^1.0.0"
+
 unist-builder@^1.0.0, unist-builder@^1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/unist-builder/-/unist-builder-1.0.2.tgz#8c3b9903ef64bcfb117dd7cf6a5d98fc1b3b27b6"
@@ -9909,7 +10282,7 @@ unset-value@^1.0.0:
     has-value "^0.3.1"
     isobject "^3.0.0"
 
-unzip-response@^1.0.0, unzip-response@^1.0.2:
+unzip-response@^1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/unzip-response/-/unzip-response-1.0.2.tgz#b984f0877fc0a89c2c773cc1ef7b5b232b5b06fe"
 
@@ -9928,18 +10301,19 @@ unzip@^0.1.11:
     readable-stream "~1.0.31"
     setimmediate ">= 1.0.1 < 2"
 
-update-notifier@^1.0.3:
-  version "1.0.3"
-  resolved "https://registry.yarnpkg.com/update-notifier/-/update-notifier-1.0.3.tgz#8f92c515482bd6831b7c93013e70f87552c7cf5a"
+update-notifier@^2.3.0:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/update-notifier/-/update-notifier-2.3.0.tgz#4e8827a6bb915140ab093559d7014e3ebb837451"
   dependencies:
-    boxen "^0.6.0"
-    chalk "^1.0.0"
-    configstore "^2.0.0"
+    boxen "^1.2.1"
+    chalk "^2.0.1"
+    configstore "^3.0.0"
+    import-lazy "^2.1.0"
+    is-installed-globally "^0.1.0"
     is-npm "^1.0.0"
-    latest-version "^2.0.0"
-    lazy-req "^1.1.0"
+    latest-version "^3.0.0"
     semver-diff "^2.0.0"
-    xdg-basedir "^2.0.0"
+    xdg-basedir "^3.0.0"
 
 upper-case@^1.1.1:
   version "1.1.3"
@@ -10116,10 +10490,9 @@ vfile@^2.0.0:
     vfile-message "^1.0.0"
 
 vinyl-fs@^3.0.0:
-  version "3.0.1"
-  resolved "https://registry.yarnpkg.com/vinyl-fs/-/vinyl-fs-3.0.1.tgz#74af5f6836a1cf414d35eeb3c10f2e65fc2a2c10"
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/vinyl-fs/-/vinyl-fs-3.0.2.tgz#1b86258844383f57581fcaac081fe09ef6d6d752"
   dependencies:
-    flush-write-stream "^1.0.0"
     fs-mkdirp-stream "^1.0.0"
     glob-stream "^6.1.0"
     graceful-fs "^4.0.0"
@@ -10128,6 +10501,7 @@ vinyl-fs@^3.0.0:
     lead "^1.0.0"
     object.assign "^4.0.4"
     pumpify "^1.3.5"
+    readable-stream "^2.3.3"
     remove-bom-buffer "^3.0.0"
     remove-bom-stream "^1.2.0"
     resolve-options "^1.1.0"
@@ -10201,11 +10575,11 @@ watchify-middleware@^1.6.0:
     watchify "^3.3.1"
 
 watchify@^3.3.1:
-  version "3.9.0"
-  resolved "https://registry.yarnpkg.com/watchify/-/watchify-3.9.0.tgz#f075fd2e8a86acde84cedba6e5c2a0bedd523d9e"
+  version "3.10.0"
+  resolved "https://registry.yarnpkg.com/watchify/-/watchify-3.10.0.tgz#f436605553c432d87f62f718cc78077418ffbccb"
   dependencies:
     anymatch "^1.3.0"
-    browserify "^14.0.0"
+    browserify "^15.2.0"
     chokidar "^1.0.0"
     defined "^1.0.0"
     outpipe "^1.1.0"
@@ -10232,6 +10606,30 @@ wcwidth@^1.0.0:
   dependencies:
     defaults "^1.0.3"
 
+web3-provider-engine@^13.6.0:
+  version "13.6.0"
+  resolved "https://registry.yarnpkg.com/web3-provider-engine/-/web3-provider-engine-13.6.0.tgz#836f51c4ee48bd7583acf3696033779c704c2214"
+  dependencies:
+    async "^2.5.0"
+    clone "^2.0.0"
+    eth-block-tracker "^2.2.2"
+    eth-sig-util "^1.3.0"
+    ethereumjs-block "^1.2.2"
+    ethereumjs-tx "^1.2.0"
+    ethereumjs-util "^5.1.1"
+    ethereumjs-vm "^2.0.2"
+    fetch-ponyfill "^4.0.0"
+    json-rpc-error "^2.0.0"
+    json-stable-stringify "^1.0.1"
+    promise-to-callback "^1.0.0"
+    readable-stream "^2.2.9"
+    request "^2.67.0"
+    semaphore "^1.0.3"
+    solc "^0.4.2"
+    tape "^4.4.0"
+    xhr "^2.2.0"
+    xtend "^4.0.1"
+
 webidl-conversions@^3.0.0:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/webidl-conversions/-/webidl-conversions-3.0.1.tgz#24534275e2a7bc6be7bc86611cc16ae0a5654871"
@@ -10383,11 +10781,11 @@ wide-align@^1.1.0:
   dependencies:
     string-width "^1.0.2"
 
-widest-line@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/widest-line/-/widest-line-1.0.0.tgz#0c09c85c2a94683d0d7eaf8ee097d564bf0e105c"
+widest-line@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/widest-line/-/widest-line-2.0.0.tgz#0142a4e8a243f8882c0233aa0e0281aa76152273"
   dependencies:
-    string-width "^1.0.1"
+    string-width "^2.1.1"
 
 window-size@0.1.0:
   version "0.1.0"
@@ -10427,14 +10825,6 @@ wrappy@1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/wrappy/-/wrappy-1.0.2.tgz#b5243d8f3ec1aa35f1364605bc0d1036e30ab69f"
 
-write-file-atomic@^1.1.2:
-  version "1.3.4"
-  resolved "https://registry.yarnpkg.com/write-file-atomic/-/write-file-atomic-1.3.4.tgz#f807a4f0b1d9e913ae7a48112e6cc3af1991b45f"
-  dependencies:
-    graceful-fs "^4.1.11"
-    imurmurhash "^0.1.4"
-    slide "^1.1.5"
-
 write-file-atomic@^2.0.0, write-file-atomic@^2.1.0, write-file-atomic@^2.3.0:
   version "2.3.0"
   resolved "https://registry.yarnpkg.com/write-file-atomic/-/write-file-atomic-2.3.0.tgz#1ff61575c2e2a4e8e510d6fa4e243cce183999ab"
@@ -10490,11 +10880,18 @@ x-is-string@^0.1.0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/x-is-string/-/x-is-string-0.1.0.tgz#474b50865af3a49a9c4657f05acd145458f77d82"
 
-xdg-basedir@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/xdg-basedir/-/xdg-basedir-2.0.0.tgz#edbc903cc385fc04523d966a335504b5504d1bd2"
+xdg-basedir@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/xdg-basedir/-/xdg-basedir-3.0.0.tgz#496b2cc109eca8dbacfe2dc72b603c17c5870ad4"
+
+xhr@^2.2.0:
+  version "2.4.1"
+  resolved "https://registry.yarnpkg.com/xhr/-/xhr-2.4.1.tgz#ba982cced205ae5eec387169ac9dc77ca4853d38"
   dependencies:
-    os-homedir "^1.0.0"
+    global "~4.3.0"
+    is-function "^1.0.1"
+    parse-headers "^2.0.0"
+    xtend "^4.0.0"
 
 xml-char-classes@^1.0.0:
   version "1.0.0"
@@ -10512,6 +10909,12 @@ xtend@4.0.1, "xtend@>=4.0.0 <4.1.0-0", xtend@^4.0.0, xtend@^4.0.1, xtend@~4.0.0,
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/xtend/-/xtend-4.0.1.tgz#a5c6d532be656e23db820efb943a1f04998d63af"
 
+xtend@~2.1.1:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/xtend/-/xtend-2.1.2.tgz#6efecc2a4dad8e6962c4901b337ce7ba87b5d28b"
+  dependencies:
+    object-keys "~0.4.0"
+
 y18n@^3.2.1:
   version "3.2.1"
   resolved "https://registry.yarnpkg.com/y18n/-/y18n-3.2.1.tgz#6d15fba884c08679c0d77e88e7759e811e07fa41"
@@ -10558,8 +10961,8 @@ yargs-parser@^9.0.2:
     camelcase "^4.1.0"
 
 yargs@^10.0.3:
-  version "10.1.1"
-  resolved "https://registry.yarnpkg.com/yargs/-/yargs-10.1.1.tgz#5fe1ea306985a099b33492001fa19a1e61efe285"
+  version "10.1.2"
+  resolved "https://registry.yarnpkg.com/yargs/-/yargs-10.1.2.tgz#454d074c2b16a51a43e2fb7807e4f9de69ccb5c5"
   dependencies:
     cliui "^4.0.0"
     decamelize "^1.1.1"
@@ -10591,7 +10994,7 @@ yargs@^11.0.0:
     y18n "^3.2.1"
     yargs-parser "^9.0.2"
 
-yargs@^4.2.0:
+yargs@^4.2.0, yargs@^4.7.1:
   version "4.8.1"
   resolved "https://registry.yarnpkg.com/yargs/-/yargs-4.8.1.tgz#c0c42924ca4aaa6b0e6da1739dfb216439f9ddc0"
   dependencies: