chore(package): update concurrently to version 5.0.2

Closes #27

Author: greenkeeper[bot]

package.json

@@ -51,7 +51,7 @@
     "@types/lokijs": "^1.5.2",
     "@types/ramda": "github:types/npm-ramda#dist",
     "ava": "^0.25.0",
-    "concurrently": "^3.6.0",
+    "concurrently": "^5.0.2",
     "cz-conventional-changelog": "^2.1.0",
     "nyc": "^12.0.2",
     "prettier": "^1.13.5",