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

Closes #35

Author: greenkeeper[bot]

package.json

@@ -48,7 +48,7 @@
     "@babel/plugin-proposal-class-properties": "^7.0.0-beta.37",
     "@babel/preset-env": "^7.0.0-beta.37",
     "@gramps/cli": "^1.1.4",
-    "@gramps/gramps": "^1.2.0",
+    "@gramps/gramps": "^4.0.2",
     "babel-core": "^7.0.0-0",
     "babel-eslint": "^8.2.1",
     "babel-jest": "^22.0.6",