version 0.2.0

.babelrc

@@ -2,7 +2,7 @@
   "presets": [
     ["@babel/env", {
       "targets": {
-        "node": 6
+        "node": 8
       }
     }]
   ],

package.json

@@ -1,6 +1,6 @@
 {
   "name": "koa-mapper",
-  "version": "0.1.2",
+  "version": "0.2.0",
   "description": "A better and smart router middleware for koa.",
   "main": "lib/index.js",
   "scripts": {
@@ -45,7 +45,7 @@
   },
   "homepage": "https://github.com/d-band/koa-mapper#readme",
   "engines": {
-    "node": ">= 4"
+    "node": ">= 8"
   },
   "dependencies": {
     "ajv": "^6.10.2",
@@ -61,10 +61,10 @@
     "qs": "^6.9.0"
   },
   "devDependencies": {
-    "@babel/cli": "^7.6.4",
-    "@babel/core": "^7.6.4",
-    "@babel/preset-env": "^7.6.3",
-    "@babel/register": "^7.6.2",
+    "@babel/cli": "^7.7.0",
+    "@babel/core": "^7.7.0",
+    "@babel/preset-env": "^7.7.1",
+    "@babel/register": "^7.7.0",
     "babel-eslint": "^10.0.3",
     "babel-plugin-istanbul": "^5.2.0",
     "chai": "^4.2.0",