~jaro/balkon

ref: fef8a026aab8152a29cb875a599f4f9e5a3ca83b balkon/lib/Data/Text/ParagraphLayout/Plain.hs -rw-r--r-- 1.7 KiB 
Deprecate the Plain interface.

Add user data to spans.

Add line numbers to laid out fragments.

Qualify Plain interface.