Merge pull request #581 from evcohen/greenkeeper/eslint-plugin-flowtype-3.5.0

Update eslint-plugin-flowtype to the latest version 🚀

Author: jessebeach

package.json

@@ -42,7 +42,7 @@
     "coveralls": "^3.0.1",
     "eslint": "^4.19.1",
     "eslint-config-airbnb-base": "^13.0.0",
-    "eslint-plugin-flowtype": "^2.49.3",
+    "eslint-plugin-flowtype": "^3.5.0",
     "eslint-plugin-import": "^2.13.0",
     "estraverse": "^4.2.0",
     "expect": "^21.2.1",