~jaro/balkon

ref: 5a89c6f79dec94bfd7f56e00b835cbdd6959ad6a 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.