Grow or shrink container vertically on sash drag

[ryandao]

I'm building a grid layout with allotment. The container's width is fixed, but I want the height to adjust dynamically. When a user drags the sash to resize a row, the container's height should grow or shrink, while keeping the other rows the same. Is there a way to achieve this behavior with the library?

[CHE1RON]

@johnwalley I'm also looking for a way to change size of one pane while keeping the width of other panes unchanged. Any idea how to achieve this? We're creating some kind of an endless horizontal gallery 😅