重构 4.0 next 版本

package.json

@@ -1,6 +1,6 @@
 {
   "name": "vxe-table-plugin-export-xlsx",
-  "version": "3.0.0-alpha.0",
+  "version": "3.0.0-alpha.1",
   "description": "基于 vxe-table 的表格插件，支持导出 xlsx 格式",
   "scripts": {
     "lib": "gulp build"
@@ -49,7 +49,7 @@
     "prettier": "^2.1.2",
     "typescript": "^4.0.5",
     "vue": "^3.0.2",
-    "vxe-table": "^4.0.0-beta.5",
+    "vxe-table": "^4.0.0-beta.6",
     "xe-utils": "^3.0.4"
   },
   "peerDependencies": {