~jaro/balkon

ref: 2bfb88d6a4b28cc8d6c8408dbf5cdfc9106fb314 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.