~jaro/balkon

ref: 81d758baf4c7f7ab803edccb4dd1bb7e82a4753d balkon/src 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.
WIP version with WIP interface.