鼠标滚轮切换标签页可以改进。qiehuan / Mouse wheel switching tab pages can be improved

[ErGu-10086]

如题，现在使用鼠标滚轮切换标签页时，切换进程会在最前和最后停住。应该增加一个功能，使得在最前一个标签页时，继续往前可以切换到最后一个标签页；在最后一个标签页时，继续往后可以切换到最前一个标签页，实现一个圆。

As the title says, when you use the mouse wheel to switch tabs, the switching process will stop at the beginning and the end. A function should be added so that when the last tab page is continued to move forward, you can switch to the last tab page; when the last tab page is continued to move backward, you can switch to the last tab page to achieve a circle.

[Jon]

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