Update babel7 to the latest version 🚀 (#20)

* chore(package): update @babel/cli to version 7.0.0

* chore(package): update @babel/core to version 7.0.0

* chore(package): update @babel/plugin-proposal-class-properties to version 7.0.0

* chore(package): update @babel/plugin-proposal-optional-chaining to version 7.0.0

* chore(package): update @babel/plugin-transform-async-to-generator to version 7.0.0

* chore(package): update @babel/polyfill to version 7.0.0

* chore(package): update @babel/preset-env to version 7.0.0

* chore(package): update @babel/preset-flow to version 7.0.0

Author: greenkeeper[bot]

package.json

@@ -24,14 +24,14 @@
   "author": "Matheus Gonçalves da Silva <PlayMa256>",
   "license": "ISC",
   "devDependencies": {
-    "@babel/cli": "7.0.0-rc.4",
-    "@babel/core": "7.0.0-rc.4",
-    "@babel/plugin-proposal-class-properties": "7.0.0-rc.4",
-    "@babel/plugin-proposal-optional-chaining": "^7.0.0-rc.4",
-    "@babel/plugin-transform-async-to-generator": "7.0.0-rc.3",
-    "@babel/polyfill": "7.0.0-rc.4",
-    "@babel/preset-env": "7.0.0-rc.3",
-    "@babel/preset-flow": "7.0.0-rc.4",
+    "@babel/cli": "7.0.0",
+    "@babel/core": "7.0.0",
+    "@babel/plugin-proposal-class-properties": "7.0.0",
+    "@babel/plugin-proposal-optional-chaining": "^7.0.0",
+    "@babel/plugin-transform-async-to-generator": "7.0.0",
+    "@babel/polyfill": "7.0.0",
+    "@babel/preset-env": "7.0.0",
+    "@babel/preset-flow": "7.0.0",
     "@commitlint/cli": "7.0.0",
     "@commitlint/config-angular": "7.0.1",
     "@commitlint/config-conventional": "7.0.1",