update trezor-connect@8

package.json

@@ -8,7 +8,7 @@
     },
     "license": "SEE LICENSE IN LICENSE.md",
     "scripts": {
-        "dev": "yarn && npx webpack-dev-server --config webpack/dev.babel.js",
+        "dev": "npx webpack-dev-server --config webpack/dev.babel.js",
         "dev:local": "yarn && npx webpack-dev-server --config webpack/local.babel.js",
         "build": "rimraf build && run-s build:*",
         "build:stable": "rimraf build/stable && npx webpack --config webpack/production.babel.js --output-path build/stable --progress --bail",
@@ -34,7 +34,7 @@
     "dependencies": {
         "@babel/polyfill": "^7.2.5",
         "@hot-loader/react-dom": "16.8.6",
-        "bignumber.js": "8.0.2",
+        "bignumber.js": "9.0.0",
         "color-hash": "^1.0.3",
         "commander": "^2.19.0",
         "connected-react-router": "6.4.0",
@@ -47,7 +47,6 @@
         "ethereumjs-util": "^6.0.0",
         "express": "^4.16.4",
         "git-revision-webpack-plugin": "^3.0.3",
-        "hdkey": "^1.1.0",
         "history": "^4.7.2",
         "html-webpack-plugin": "^3.2.0",
         "jest-fetch-mock": "^2.1.0",
@@ -81,7 +80,7 @@
         "styled-components": "^4.1.3",
         "styled-normalize": "^8.0.6",
         "trezor-bridge-communicator": "1.0.2",
-        "trezor-connect": "7.0.2",
+        "trezor-connect": "8.1.0-beta.6",
         "trezor-ui-components": "^1.0.0-beta.20",
         "wallet-address-validator": "^0.2.4",
         "web3": "1.0.0-beta.36",
@@ -124,7 +123,7 @@
         "eslint-plugin-prettier": "^3.0.1",
         "eslint-plugin-react": "^7.12.4",
         "file-loader": "3.0.1",
-        "flow-bin": "0.90",
+        "flow-bin": "0.121.0",
         "jest": "^24.9.0",
         "prettier": "^1.16.4",
         "prettier-eslint": "^9.0.0",