Update dependencies (#8)

package.json

@@ -38,19 +38,19 @@
   },
   "homepage": "https://github.com/lukechilds/react-jsdom",
   "dependencies": {
-    "react-dom": "^15.6.1",
+    "react-dom": "^16.3.1",
     "window": "^4.1.1"
   },
   "devDependencies": {
-    "ava": "^0.20.0",
+    "ava": "^0.25.0",
     "babel-preset-react": "^6.24.1",
-    "coveralls": "^2.13.1",
+    "coveralls": "^3.0.0",
     "eslint-config-xo-lukechilds": "^1.0.0",
-    "eslint-config-xo-react": "^0.13.0",
+    "eslint-config-xo-react": "^0.16.0",
     "eslint-plugin-react": "^7.2.0",
     "nyc": "^11.0.3",
-    "react": "^15.6.1",
+    "react": "^16.3.1",
     "this": "^1.0.2",
-    "xo": "^0.19.0"
+    "xo": "^0.20.3"
   }
 }