~jaro/balkon

ref: 56b3ee16c587863ff45e5564df83cb23905aca90 balkon/test/Data/Text/ParagraphLayout 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.