~jaro/balkon

ref: 81d758baf4c7f7ab803edccb4dd1bb7e82a4753d 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.