chore(tsfmt): update dependencies

Author: vvakame

package.json

@@ -42,8 +42,8 @@
     "@types/glob-expand": "^0.0.30",
     "@types/mocha": "^2.2.32",
     "@types/node": "^6.0.40",
-    "@types/power-assert": "^0.0.28",
-    "es6-promise": "^3.3.1",
+    "@types/power-assert": "^1.4.29",
+    "es6-promise": "^4.0.5",
     "espower-loader": "^1.0.0",
     "grunt": "^1.0.1",
     "grunt-contrib-clean": "^1.0.0",