Progression range should update on columns change

[JayPanoz]

It seems that progression range is not updated when switching from 1 to 2 columns, and vice-versa. It should behave as resizing the window width.

[JayPanoz]

I’m afraid this is tied to ts-toolkit’s Preference API as a quick experiment on colCount change showed wrong numbers were reported due to the scrollWidth being “cached” and not updated. Now currentPositionNumbers relies on this to find the positions in view(port).

On resize, Playground is relying on the positionChanged listener, so it could be a good idea to make things consistent since changing the number of columns is conceptually a resize of sorts, as is scroll, font-size, font-family, etc. But then maybe this could be overloading this event quite significantly.