~jaro/balkon

ref: 0e50058d5a6739068d79b08f6fac7fc29aa39f92 balkon/test/Data d---------
Clean up ParagraphConstruction.
Use infix operators for constructing test data.
Implement "plain" interface.
Create "plain" interface.
Add module for working with rectangle coordinates.
Add explicit scale to test font.
Separate tests by module.