Columns: column width seems to not consider space between columns

[veej]

The fractional width of a Column inside the Columns layout component is computed considering the whole width of the parent, without considering gaps between the columns.

Hence, for example, two columns with width "1/2" and a gap between them will lead to an overall width > 100%.

Note: Braid's strategy is to avoid gap and use paddingLeft instead, adding a negative left margin to the parent to compensate the padding of the first column. Consider using the same approach in bento