~jaro/balkon

ref: 8b8b095a2d7cc321b520b3d3dc707f3f0501d2e3 balkon/.golden/richParagraphLayout/nestedBoxes.golden -rw-r--r-- 7.9 KiB 
Describe box edges with extensible type.

Handle ancestor boxes in rich layout.

Add ancestor boxes to interface.

Test Rich layout.