packages update

package.json

@@ -25,7 +25,7 @@
     "ejson": "^2.1.2",
     "handlebars": "^4.0.5",
     "instagram-node": "^0.5.1",
-    "koa": "^2.0.0-alpha.3",
+    "koa": "^2.5.1",
     "koa-bodyparser": "^3.0.0",
     "koa-compose": "^3.1.0",
     "koa-conditional-get": "^1.0.2",
@@ -39,7 +39,7 @@
     "koa-session": "^4.0.0",
     "koa-static": "^3.0.0",
     "markdown": "^0.5.0",
-    "moment": "^2.18.1",
+    "moment": "^2.22.2",
     "mongodb": "^2.1.14",
     "mz": "^2.4.0",
     "react": "^16.3.2",
@@ -66,7 +66,7 @@
     "babel-plugin-transform-object-rest-spread": "^6.26.0",
     "babel-plugin-transform-react-jsx": "^6.23.0",
     "babel-plugin-transform-regenerator": "^6.26.0",
-    "babel-preset-env": "^1.6.1",
+    "babel-preset-env": "^1.7.0",
     "babel-register": "^6.26.0",
     "css-loader": "^0.28.9",
     "cssnano": "^3.4.0",