~jaro/balkon

ref: 62b95c9e616030c3a1bdfe158634b2d6ee9fc4a9 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.