~jaro/balkon

ref: e1e4bf7ca4771d7ce21ca1398ee1478901c3001d balkon/test/Data/Text/ParagraphLayout/Internal/ApplyBoxesSpec.hs -rw-r--r-- 6.5 KiB 
Integrate BiDi levels with spanToRuns algorithm.

Span/box boundaries no longer reset directionality.

BREAKING: Text with no strongly directional characters would
previously be treated as having no direction. It will now be
treated as having the direction defined in TextOptions.
This affects calculated positions.

Implement finding box edges.