Update all package versions to match latest published to NPM

packages/utils/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0xproject/utils",
-    "version": "0.6.2",
+    "version": "0.7.1",
     "engines": {
         "node": ">=6.12"
     },
@@ -24,8 +24,8 @@
     },
     "homepage": "https://github.com/0xProject/0x-monorepo/packages/utils/README.md",
     "devDependencies": {
-        "@0xproject/monorepo-scripts": "^0.1.20",
-        "@0xproject/tslint-config": "^0.4.18",
+        "@0xproject/monorepo-scripts": "^0.2.1",
+        "@0xproject/tslint-config": "^0.4.20",
         "@types/lodash": "4.14.104",
         "copyfiles": "^1.2.0",
         "make-promises-safe": "^1.1.0",
@@ -36,11 +36,11 @@
     },
     "dependencies": {
         "ethereum-types": "^0.0.1",
-        "@0xproject/typescript-typings": "^0.3.2",
+        "@0xproject/typescript-typings": "^0.4.1",
         "@types/node": "^8.0.53",
         "ethereumjs-util": "^5.1.1",
         "bignumber.js": "~4.1.0",
-        "ethers": "^3.0.15",
+        "ethers": "3.0.22",
         "js-sha3": "^0.7.0",
         "lodash": "^4.17.4",
         "web3": "^0.20.0"