feat: 🎸 extracted css file

Closes: #55

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "vue-tree-list",
-  "version": "1.4.1",
+  "version": "1.4.2",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {

package.json

@@ -1,6 +1,6 @@
 {
   "name": "vue-tree-list",
-  "version": "1.4.1",
+  "version": "1.4.2",
   "description": "A vue component for tree structure. Support adding treenode/leafnode, editing node's name and dragging.",
   "author": "ayou",
   "scripts": {

vue.config.js

@@ -0,0 +1,5 @@
+module.exports = {
+  css: {
+    extract: false
+  }
+};