~jaro/balkon

ref: 9dd8b6fe88eacd8bd592c4ef31af592836e84c3b balkon/test/Data/Text/ParagraphLayout/Internal/TextContainerSpec.hs -rw-r--r-- 3.3 KiB 
Move non-public modules into Internal namespace.

Minimise working with Data.Text.Internal.

Implement run splitting.