~jaro/balkon

ref: 65d952e2f615751db54267097c706545be5e6be6 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.