updated CHANGELOG

CHANGELOG-zh.md

@@ -6,6 +6,7 @@
 - **爬虫列表优化**. 分状态任务列数统计，任务列表详情弹出框，图例. [425](https://github.com/crawlab-team/crawlab/issues/425)
 - **版本升级检测**. 检测最新版本，通知用户升级.
 - **批量操作爬虫**. 允许用户批量运行/停止爬虫任务，以及批量删除爬虫.
+- **复制爬虫**. 允许用户复制已存在爬虫来创建新爬虫.
 
 ### Bug 修复
 

CHANGELOG.md

@@ -6,6 +6,7 @@
 - **Spider List Optimization**. Tasks count by status, tasks detail popup, legend. [#425](https://github.com/crawlab-team/crawlab/issues/425)
 - **Upgrade Check**. Check latest version and notifiy users to upgrade.
 - **Spiders Batch Operation**. Allow users to run/stop spider tasks and delete spiders in batches.
+- **Copy Spiders**. Allow users to copy an existing spider to create a new one.
 
 ### Bug Fixes