test with the latest stable Node

.travis.yml

@@ -4,7 +4,7 @@ git:
 branches:
   except: /^v\d/
 language: node_js
-node_js: iojs
+node_js: stable
 notifications:
   email: false
 after_script: npm run-script coveralls

appveyor.yml

@@ -1,11 +1,10 @@
-init: git config --global core.autocrlf input
 shallow_clone: true
 version: '{build}'
 skip_tags: true
 install:
-  - ps: Install-Product node 3
+  - ps: Install-Product node 4
   - npm install --production
   - npm install tape
 build: off
-test_script: node --strong_mode --harmony_arrow_functions test.js
+test_script: node --strong_mode --throw-deprecation --trace-sync-io --track-heap-objects test.js
 cache: node_modules

package.json

@@ -6,8 +6,8 @@
   "author": "Shinnosuke Watanabe (https://github.com/shinnn)",
   "scripts": {
     "pretest": "eslint --config @shinnn/node index.js test.js",
-    "test": "node --strong_mode --harmony_arrow_functions test.js",
-    "coverage": "node --strong_mode --harmony_arrow_functions node_modules/.bin/istanbul cover test.js",
+    "test": "node --strong_mode --throw-deprecation --trace-sync-io --track-heap-objects test.js",
+    "coverage": "node --strong_mode node_modules/.bin/istanbul cover test.js",
     "coveralls": "${npm_package_scripts_coverage} && istanbul-coveralls"
   },
   "license": "MIT",