update dependencies

package.json

@@ -47,7 +47,7 @@
     "vue-lazyload": "^1.1.3"
   },
   "peerDependencies": {
-    "vue": "^2.4.4"
+    "vue": ">= 2.4.0"
   },
   "devDependencies": {
     "autoprefixer": "^7.1.3",
@@ -65,7 +65,7 @@
     "babel-preset-env": "^1.6.0",
     "chai": "^4.1.2",
     "cheerio": "^0.22.0",
-    "codecov": "^2.2.0",
+    "codecov": "^2.3.1",
     "cross-env": "^5.0.5",
     "css-loader": "^0.28.7",
     "eslint-plugin-vue": "^2.1.0",
@@ -97,7 +97,7 @@
     "postcss": "^6.0.10",
     "postcss-calc": "^6.0.0",
     "postcss-easy-import": "^3.0.0",
-    "postcss-loader": "^2.0.6",
+    "postcss-loader": "^2.0.8",
     "precss": "2.0.0",
     "progress-bar-webpack-plugin": "^1.10.0",
     "rimraf": "^2.5.4",
@@ -107,16 +107,16 @@
     "style-loader": "^0.19.0",
     "uppercamelcase": "^3.0.0",
     "url-loader": "^0.6.2",
-    "vue": "^2.4.2",
+    "vue": "^2.5.2",
     "vue-loader": "^13.3.0",
-    "vue-markdown-loader": "^2.1.0",
-    "vue-router": "^3.0.0",
+    "vue-markdown-loader": "^2.2.2",
+    "vue-router": "^3.0.1",
     "vue-sfc-compiler": "^0.0.2",
     "vue-style-loader": "^3.0.0",
-    "vue-template-compiler": "^2.4.2",
+    "vue-template-compiler": "^2.5.2",
     "webpack": "^3.7.1",
     "webpack-bundle-analyzer": "^2.9.0",
-    "webpack-dev-server": "^2.7.1",
+    "webpack-dev-server": "^2.9.2",
     "webpack-merge": "^4.1.0",
     "zan-doc": "^0.3.6"
   }