~jaro/balkon

ref: 72076d17d2d2d6a0db54aa168366fa9a6ab646e0 balkon/test/Data/Text/ParagraphLayout/Internal/TreeSpec.hs -rw-r--r-- 4.3 KiB 
Consolidate tree types into one.

Add required textDirection to TextOptions.

Use ResolvedBox when flattening trees.