~jaro/balkon

ref: b7e2da83c6eaeb921f5113e58f2f1fa4e580e292 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.