~jaro/balkon

ref: 74594e80185c479dd7d4b10db0864ff580f3cb1d balkon/test/Data/Text/ParagraphLayout d---------
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.