~jaro/balkon

ref: b7db6d117bdaa5459bd162331d9ab2d887b365f6 balkon/src/Data/Text/ParagraphLayout/Internal/Paragraph.hs -rw-r--r-- 4.5 KiB 
Add internal functions for "shaped runs" output.

Clarify meaning of Array in Paragraph.

Slightly decompose the Plain module.