~jaro/balkon

ref: dfa301d6c0659e437ae66d72787a23b4393b33f2 balkon/src/Data/Text/ParagraphLayout d---------
Use CSS3 terminology for fragments and containing block.
Avoid reimplementing Data.Text.Lazy.fromStrict.
Implement "plain" interface.
Use Rect in "plain" interface.
Create "plain" interface.
Add module for working with rectangle coordinates.
Separate modules.