~jaro/balkon

ref: e2944b4d2ba4dce2e447dc32505597c0cd0519b6 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.