[Feature Request] m*n arrangement 自定义m*n的布局（m!=n）

[scy639]

In current version, user can only customize n-n arrangement. How to set a m-n arrangement? 如何自定义 arrangement的行数和列数，甚至让每一行有不同的列数（其实也就是把一行当作一个group用了）

[mdear]

Translation : How to customize the number of rows and columns of the arrangement, and even make each row have a different number of columns (in fact, one row is used as a group)