~jaro/balkon

ref: 0680c59bcaa7239488d49b6bc9ed0aa8ae0ec3b4 balkon/test/Data/Text 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.