Use @babel 7 (#90)

packages/api-provider/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@polkadot/api-provider",
-  "version": "0.10.13",
+  "version": "0.11.0",
   "description": "Transport providers for the API",
   "main": "index.js",
   "keywords": [
@@ -34,11 +34,11 @@
     "nock": "^9.1.0"
   },
   "dependencies": {
-    "@polkadot/storage-substrate": "^0.13.10",
-    "@polkadot/util": "^0.19.7",
-    "@polkadot/util-crypto": "^0.19.7",
-    "@polkadot/util-keyring": "^0.19.7",
-    "babel-runtime": "^6.26.0",
+    "@babel/runtime": "^7.0.0-beta.47",
+    "@polkadot/storage-substrate": "^0.14.1",
+    "@polkadot/util": "^0.20.3",
+    "@polkadot/util-crypto": "^0.20.3",
+    "@polkadot/util-keyring": "^0.20.3",
     "eventemitter3": "^2.0.3",
     "isomorphic-fetch": "^2.2.1",
     "websocket": "^1.0.25"