Problem
What problem does this solve?
可以像trea一样增加“撤销本次修改”及“回滚到某次对话之前”，刚才把我文件覆盖了，找不回来了
Solution
How should it work?
Use Case
When would you use this?
Priority
-
High - Blocking issue -
Medium - Important improvement -
Low - Nice to have
Additional Info
(Optional: screenshots, examples, links)
