ec8a20fec0
This mimics the 'spreadsheet' behavior. Columns and/or rows can have equal sizes, or adapt to their content - but always in a grid way (i.e. all items in a same column will always have same available width, and all items in a same row will always have same available height). Also, you can fill (order) the grid in a row- or column-major way. Not used anywhere for now. Differential: https://developer.blender.org/D2395