chore(package): update @gramps/gramps to version 4.0.2

Closes #39

Author: greenkeeper[bot]

package.json

@@ -40,7 +40,7 @@
   },
   "devDependencies": {
     "@gramps/cli": "^1.1.3",
-    "@gramps/gramps": "^1.1.0",
+    "@gramps/gramps": "^4.0.2",
     "babel-cli": "^6.24.1",
     "babel-eslint": "^8.0.3",
     "babel-jest": "^22.0.4",