~jaro/balkon

ref: 150e9e43b8b854092d77cbbe2ad45afa42512074 balkon/test/Data/Text/ParagraphLayout/Internal/TreeSpec.hs -rw-r--r-- 6.0 KiB 
Add helper function to strut empty boxes.

Consolidate tree types into one.

Add required textDirection to TextOptions.

Use ResolvedBox when flattening trees.